Arris Ruckus ICX 7850 Series User manual

Supporting FastIron Software Release 08.0.90
CONFIGURATION GUIDE
Ruckus FastIron Stacking Conguration
Guide, 08.0.90
Part Number: 53-1005572-01
Publication Date: 20 February 2019

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Contents
Preface...................................................................................................................................................................................................9
Document Conventions.............................................................................................................................................................................. 9
Notes, Cautions, and Warnings.......................................................................................................................................................... 9
Command Syntax Conventions............................................................................................................................................................... 10
Document Feedback................................................................................................................................................................................. 10
Ruckus Product Documentation Resources...........................................................................................................................................10
Online Training Resources........................................................................................................................................................................11
Contacting Ruckus Customer Services and Support.............................................................................................................................11
What Support Do I Need?................................................................................................................................................................. 11
Open a Case........................................................................................................................................................................................11
Self-Service Resources.......................................................................................................................................................................11
About This Guide................................................................................................................................................................................ 13
Supported hardware................................................................................................................................................................................. 13
What’s new in this document...................................................................................................................................................................13
Stacking Overview..............................................................................................................................................................................15
Stacking.......................................................................................................................................................................................................15
Network management and stack conguration............................................................................................................................ 16
Switching and routing advantages...................................................................................................................................................16
Campus Fabric........................................................................................................................................................................................... 16
Ruckus stackable models......................................................................................................................................................................... 18
Stacking terminology................................................................................................................................................................................ 19
Stack unit roles................................................................................................................................................................................... 19
Stacking terms....................................................................................................................................................................................19
Changes to Stacking in FastIron Release 08.0.90............................................................................................................................23
Valid-stack-port sets..................................................................................................................................................................................23
No more stack default-ports conguration............................................................................................................................................24
Stacking ports displayed even when stacking is not enabled..............................................................................................................24
Changes to stack-port and stack-trunk conguration.......................................................................................................................... 25
General comparison of the new and old behaviors in conguring stacking ports and trunks................................................25
Comparison of conguration changes that use non-factory valid-stack-port sets....................................................................26
Comparison of common conguration procedures using factory-set default stacking ports................................................. 26
Changes to upgrade and downgrade for stacking from FastIron release 08.0.90............................................................................ 29
Upgrading to FastIron release 08.0.90 from earlier releases....................................................................................................... 29
Downgrading from FastIron 08.0.90 to earlier releases................................................................................................................30
Stack interactive-setup..............................................................................................................................................................................31
Dierences in stack unit replacement.............................................................................................................................................32
Stack zero-touch provisioning..................................................................................................................................................................33
Stacking deployment guidelines..............................................................................................................................................................34
Constructing a new stack from scratch or adding new units to a stack......................................................................................34
Replacing stack units......................................................................................................................................................................... 35
Adding new links between existing stack units.............................................................................................................................. 35
Support for two-unit stack linear-topology trunks................................................................................................................................36
Building a two-unit linear-topology trunk manually......................................................................................................................36
Building a two-unit stack with a linear-topology trunk using stack interactive-setup...............................................................40
Creating a two-unit linear-topology stack using stack zero-touch provisioning........................................................................ 42
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Changing a live two-unit stack to a linear-topology trunk............................................................................................................ 45
Changing a live linear-topology trunk to a ring..............................................................................................................................46
Building a Stack.................................................................................................................................................................................. 49
Planning to build a stack...........................................................................................................................................................................49
Software requirements..................................................................................................................................................................... 49
Stack requirements............................................................................................................................................................................49
Ruckus stacking topologies...............................................................................................................................................................49
FastIron stacking distances and optics by device.......................................................................................................................... 50
Stacking conguration guidelines....................................................................................................................................................54
Planning to build a stack with 802.1br switch port extender capability.............................................................................................55
Stack construction methods.................................................................................................................................................................... 56
The stack interactive-setup utility.................................................................................................................................................... 56
Scenario 1 - Using stack interactive-setup to create a stack.........................................................................................................57
Scenario 2 - Using zero-touch provisioning to congure a stack................................................................................................. 77
Scenario 3 - Manually conguring a three member stack in a ring topology.............................................................................83
Verifying a stack conguration.................................................................................................................................................................84
Displaying information on stack connections........................................................................................................................................86
Stacking by Device............................................................................................................................................................................. 89
ICX 7150 stack conguration overview................................................................................................................................................... 89
ICX 7150 stacking ports..................................................................................................................................................................... 90
ICX 7150 stacking topologies............................................................................................................................................................ 92
ICX 7150 conguration notes........................................................................................................................................................... 95
ICX 7150 stacking trunks................................................................................................................................................................... 96
Converting stacking ports to data ports on ICX 7150 devices....................................................................................................101
ICX 7250 stack conguration overview................................................................................................................................................. 102
ICX 7250 stacking topologies..........................................................................................................................................................103
ICX 7250 stacking conguration notes..........................................................................................................................................105
Reconguring ICX 7250 1-Gbps ports as 10-Gbps ports.............................................................................................................106
ICX 7250 trunk conguration..........................................................................................................................................................106
ICX 7450 stack conguration overview................................................................................................................................................. 107
ICX 7450 stacking topologies..........................................................................................................................................................109
ICX 7450 stacking conguration notes..........................................................................................................................................113
Conguring 10-Gbps stacking ports on ICX 7450 devices...........................................................................................................113
Creating stacking trunks on the ICX 7450.....................................................................................................................................115
ICX 7650 stack conguration overview................................................................................................................................................. 117
ICX 7650 stacking ports...................................................................................................................................................................119
ICX 7650 stacking topologies..........................................................................................................................................................119
ICX 7650 conguration notes......................................................................................................................................................... 123
ICX 7650 rear-module options....................................................................................................................................................... 123
Forming an ICX 7650 stack............................................................................................................................................................. 127
ICX 7750 stack conguration overview................................................................................................................................................. 136
ICX 7750 stacking topologies..........................................................................................................................................................138
Installing the ICX 7750 in a remote stack......................................................................................................................................143
ICX 7750 stacking conguration notes..........................................................................................................................................145
ICX 7750 trunk formation during interactive-setup.....................................................................................................................146
Removing stacking ports from an ICX 7750..................................................................................................................................147
Creating an ICX 7750 stacking link in a production environment..............................................................................................147
Converting an ICX 7750 trunk to a port connection in a live stack............................................................................................148
Converting an ICX 7750 ring to a linear stack in a live environment.........................................................................................149
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Restoring a data port from an ICX 7750 trunk in a live stack..................................................................................................... 150
ICX 7850 stack conguration overview................................................................................................................................................. 150
ICX 7850 stacking topologies..........................................................................................................................................................151
ICX 7850 conguration notes......................................................................................................................................................... 154
Creating a two-unit ICX 7850 stack with a linear-topology trunk using stack interactive-setup............................................155
Using stack zero-touch provisioning to create a two-unit ICX 7850 stack with a ring topology.............................................157
Creating a linear-topology trunk on a two-unit ICX 7850 stack in a live environment............................................................161
Manually creating a two-unit ICX 7850 stack with a ring topology............................................................................................165
Hitless Stacking................................................................................................................................................................................ 171
Hitless stacking overview........................................................................................................................................................................171
Hitless stacking behavior........................................................................................................................................................................171
Supported hitless stacking events ........................................................................................................................................................173
Non-supported hitless stacking events................................................................................................................................................ 173
Supported hitless stacking protocols and services............................................................................................................................. 173
Hitless stacking conguration notes and feature limitations............................................................................................................ 176
What happens during a hitless stacking switchover or failover........................................................................................................ 176
Real-time synchronization among all units in a stack................................................................................................................. 176
Standby controller role in hitless stacking........................................................................................................................................... 177
Standby controller election.............................................................................................................................................................177
Runtime conguration mismatch.................................................................................................................................................. 178
Support during stack formation, stack merge, and stack split.......................................................................................................... 178
Hitless stacking failover.......................................................................................................................................................................... 181
Enabling hitless stacking failover................................................................................................................................................... 181
Hitless stacking failover example...................................................................................................................................................182
Hitless stacking switchover.................................................................................................................................................................... 182
Executing a hitless stacking switchover........................................................................................................................................ 183
Hitless stacking switchover examples........................................................................................................................................... 183
Displaying information about hitless stacking.................................................................................................................................... 187
Displaying information about stack failover.................................................................................................................................188
Displaying hitless stacking status.................................................................................................................................................. 188
Displaying pending device roles.....................................................................................................................................................188
Displaying information about link synchronization status.........................................................................................................188
Syslog messages for hitless stacking failover and switchover...........................................................................................................189
Stack Management.......................................................................................................................................................................... 191
Managing a stack through one IP address........................................................................................................................................... 191
Enabling or disabling stacking mode.................................................................................................................................................... 191
Disabling stacking mode................................................................................................................................................................. 192
Controlling the stack through the CLI................................................................................................................................................... 192
Logging in through the console port............................................................................................................................................. 192
CLI command syntax for stack units............................................................................................................................................. 193
Stack unit identication ......................................................................................................................................................................... 193
Naming a stack unit................................................................................................................................................................................ 194
Stack management MAC address..........................................................................................................................................................195
Manually allocating the stack MAC address................................................................................................................................. 196
Stack device roles and elections............................................................................................................................................................197
Active controller............................................................................................................................................................................... 197
Standby controller........................................................................................................................................................................... 198
Bootup role.......................................................................................................................................................................................198
Active controller and standby controller elections......................................................................................................................198
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Active controller and standby controller resets........................................................................................................................... 199
Standby controller selection based on priority conguration....................................................................................................200
Standby controller election criteria............................................................................................................................................... 200
Stack unit priority.................................................................................................................................................................................... 200
Changing the priority of a stack unit............................................................................................................................................. 202
Stack software images............................................................................................................................................................................ 202
Conrming stack software versions.............................................................................................................................................. 202
Stack mismatches....................................................................................................................................................................................202
Advanced feature privilege mismatch...........................................................................................................................................203
Minor mismatch for stack units..................................................................................................................................................... 203
Major mismatch for stack units..................................................................................................................................................... 204
Conguration mismatch for stack units........................................................................................................................................204
Memory allocation failure...............................................................................................................................................................205
Auto Image Copy for stack units.................................................................................................................................................... 206
Copying the ash image to a stack unit from the active controller...........................................................................................207
Conguring stacking trunks in a live environment............................................................................................................................. 207
Displaying multi-trunk stacking conguration............................................................................................................................. 208
Error messages encountered when conguring a stacking trunk.............................................................................................208
Conguring stacking ports in a live environment............................................................................................................................... 209
Adding, removing, or replacing units in a stack...................................................................................................................................210
Installing a new unit in a stack using stack interactive-setup.....................................................................................................210
Removing a unit from a stack.........................................................................................................................................................210
Stack unit replacement................................................................................................................................................................... 210
Moving a unit to another stack...................................................................................................................................................... 215
Removing an active controller from a powered stack.................................................................................................................215
Reloading a stack unit.............................................................................................................................................................................215
Managing stack partitioning.................................................................................................................................................................. 216
Merging stacks.........................................................................................................................................................................................216
Unconguring a stack............................................................................................................................................................................. 217
Syslog, SNMP, and traps for stack units................................................................................................................................................218
Conguring SNMP for a stack.........................................................................................................................................................218
SNMP engine IDs for stackable devices........................................................................................................................................ 218
Displaying stack information................................................................................................................................................................. 219
Displaying stacking topology..........................................................................................................................................................219
Displaying running conguration information.............................................................................................................................220
Displaying software version information......................................................................................................................................221
Displaying stack ash information................................................................................................................................................ 223
Displaying stack memory information.......................................................................................................................................... 223
Displaying stack chassis information ........................................................................................................................................... 224
Displaying stack module information........................................................................................................................................... 225
Displaying general or detailed information about stack members...........................................................................................225
Displaying information about stack neighbors............................................................................................................................227
Displaying stack port information................................................................................................................................................. 228
Displaying stacking port statistics..................................................................................................................................................228
Displaying stacking port interface information............................................................................................................................229
Displaying IPC statistics for a stack................................................................................................................................................229
Displaying reliable IPC statistics for stack units........................................................................................................................... 231
Displaying information on stack zero-touch conguration........................................................................................................ 233
MIB support for ICX stack congurations.............................................................................................................................................235
ICX Stack Troubleshooting.............................................................................................................................................................. 237
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Problems commonly diagnosed with stack formation.......................................................................................................................237
Manually triggering stack diagnosis......................................................................................................................................................237
Troubleshooting an unsuccessful stack build......................................................................................................................................238
Troubleshooting stack interactive-setup.............................................................................................................................................. 240
Troubleshooting unit replacement issues............................................................................................................................................241
Checking hardware after an upgrade failure....................................................................................................................................... 242
Troubleshooting image copy issues......................................................................................................................................................243
Conguration, startup conguration les, and stacking ash...........................................................................................................243
Stacking unit role transition considerations........................................................................................................................................ 244
Port down and aging...............................................................................................................................................................................244
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Preface
• Document Conventions................................................................................................................................................ 9
• Command Syntax Conventions................................................................................................................................. 10
• Document Feedback................................................................................................................................................... 10
• Ruckus Product Documentation Resources.............................................................................................................10
• Online Training Resources..........................................................................................................................................11
• Contacting Ruckus Customer Services and Support...............................................................................................11
Document Conventions
The following table lists the text conventions that are used throughout this guide.
TABLE 1 Text Conventions
Convention Description Example
monospace Identies command syntax
examples
device(config)# interface ethernet 1/1/6
bold User interface (UI) components
such as screen or page names,
keyboard keys, software buttons,
and eld names
On the Start menu, click All Programs.
italics Publication titles Refer to the Ruckus Small Cell Release Notes for more information.
Notes, Cautions, and Warnings
Notes, cautions, and warning statements may be used in this document. They are listed in the order of increasing severity of
potential hazards.
NOTE
A NOTE provides a tip, guidance, or advice, emphasizes important information, or provides a reference to related
information.
ATTENTION
An ATTENTION statement indicates some information that you must read before continuing with the current action or
task.
CAUTION
A CAUTION statement alerts you to situations that can be potentially hazardous to you or cause damage to
hardware, rmware, software, or data.
DANGER
A DANGER statement indicates conditions or situations that can be potentially lethal or extremely hazardous to you.
Safety labels are also attached directly to products to warn of these conditions or situations.
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Command Syntax Conventions
Bold and italic text identify command syntax components. Delimiters and operators dene groupings of parameters and their
logical relationships.
Convention Description
bold text Identies command names, keywords, and command options.
italic text Identies a variable.
[ ] Syntax components displayed within square brackets are optional.
Default responses to system prompts are enclosed in square brackets.
{ x | y | z } A choice of required parameters is enclosed in curly brackets separated by vertical bars. You must select one of the
options.
x | yA vertical bar separates mutually exclusive elements.
< > Nonprinting characters, for example, passwords, are enclosed in angle brackets.
... Repeat the previous element, for example, member[member...].
\ Indicates a “soft” line break in command examples. If a backslash separates two lines of a command input, enter the
entire command at the prompt without the backslash.
Document Feedback
Ruckus is interested in improving its documentation and welcomes your comments and suggestions.
You can email your comments to Ruckus at [email protected].
When contacting us, include the following information:
•Document title and release number
•Document part number (on the cover page)
•Page number (if appropriate)
For example:
•Ruckus SmartZone Upgrade Guide, Release 5.0
•Part number: 800-71850-001 Rev A
•Page 7
Ruckus Product Documentation Resources
Visit the Ruckus website to locate related documentation for your product and additional Ruckus resources.
Release Notes and other user documentation are available at https://support.ruckuswireless.com/documents. You can locate the
documentation by product or perform a text search. Access to Release Notes requires an active support contract and a Ruckus
Support Portal user account. Other technical documentation content is available without logging in to the Ruckus Support Portal.
White papers, data sheets, and other product documentation are available at https://www.ruckuswireless.com.
Preface
Command Syntax Conventions
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Online Training Resources
To access a variety of online Ruckus training modules, including free introductory courses to wireless networking essentials, site
surveys, and Ruckus products, visit the Ruckus Training Portal at https://training.ruckuswireless.com.
Contacting Ruckus Customer Services and
Support
The Customer Services and Support (CSS) organization is available to provide assistance to customers with active warranties on
their Ruckus products, and customers and partners with active support contracts.
For product support information and details on contacting the Support Team, go directly to the Ruckus Support Portal using
https://support.ruckuswireless.com, or go to https://www.ruckuswireless.com and select Support.
What Support Do I Need?
Technical issues are usually described in terms of priority (or severity). To determine if you need to call and open a case or access
the self-service resources, use the following criteria:
•Priority 1 (P1)—Critical. Network or service is down and business is impacted. No known workaround. Go to the Open a
Case section.
•Priority 2 (P2)—High. Network or service is impacted, but not down. Business impact may be high. Workaround may be
available. Go to the Open a Case section.
•Priority 3 (P3)—Medium. Network or service is moderately impacted, but most business remains functional. Go to the
Self-Service Resources section.
•Priority 4 (P4)—Low. Requests for information, product documentation, or product enhancements. Go to the Self-
Service Resources section.
Open a Case
When your entire network is down (P1), or severely impacted (P2), call the appropriate telephone number listed below to get
help:
•Continental United States: 1-855-782-5871
•Canada: 1-855-782-5871
•Europe, Middle East, Africa, Central and South America, and Asia Pacic, toll-free numbers are available at https://
support.ruckuswireless.com/contact-us and Live Chat is also available.
•Worldwide toll number for our support organization. Phone charges will apply: [phone]
We suggest that you keep a physical note of the appropriate support number in case you have an entire network outage.
Self-Service Resources
The Ruckus Support Portal at https://support.ruckuswireless.com oers a number of tools to help you to research and resolve
problems with your Ruckus products, including:
•Technical Documentation—https://support.ruckuswireless.com/documents
Preface
Contacting Ruckus Customer Services and Support
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•Community Forums—https://forums.ruckuswireless.com/ruckuswireless/categories
•Knowledge Base Articles—https://support.ruckuswireless.com/answers
•Software Downloads and Release Notes—https://support.ruckuswireless.com/#products_grid
•Security Bulletins—https://support.ruckuswireless.com/security
Using these resources will help you to resolve some issues, and will provide TAC with additional data from your troubleshooting
analysis if you still require assistance through a support case or RMA. If you still require help, open and manage your case at
https://support.ruckuswireless.com/case_management.
Preface
Contacting Ruckus Customer Services and Support
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About This Guide
• Supported hardware...................................................................................................................................................13
• What’s new in this document.....................................................................................................................................13
Supported hardware
This guide supports the following Ruckus products:
•Ruckus ICX 7850 Series
•Ruckus ICX 7750 Series
•Ruckus ICX 7650 Series
•Ruckus ICX 7450 Series
•Ruckus ICX 7250 Series
•Ruckus ICX 7150 Series
For information about what models and modules these devices support, see the hardware installation guide for the specic
product family.
What’s new in this document
The following tables provide descriptions of new information added to this guide for FastIron software release 08.0.90.
TABLE 2 Summary of enhancements in FastIron release 08.0.90
Feature Description Location
ICX 7850 stacking Stacks of up to 12 ICX 7850 units are supported. Refer to ICX 7850 stack conguration overview
on page 150 for more information.
Conguration and behavior changes,
overview
Numerous changes in stacking conguration are
introduced in this release. The key changes are
itemized in the remainder of this table. The
section referenced in the next column provides
an overview of the major changes.
Refer to Changes to Stacking in FastIron
Release 08.0.90 on page 23 for more
information.
Interactive-setup for stacking replaces
stack secure-setup
The stack interactive-setup command is
introduced to streamline and assist in stack
conguration. The stack secure-setup
command is deprecated.
Refer to Stack interactive-setup on page 31
for more information.
Zero-touch provisioning for stacking The stack zero-touch-enable command is
introduced to allow automatic stack
conguration.
Refer to Stack zero-touch provisioning on
page 33 for more information.
Elimination of required default-ports
conguration
The default-ports command is deprecated
beginning with this release. Conguring stacking
ports is simplied.
Refer to No more stack default-ports
conguration on page 24 for more
information.
Two-unit linear-topology trunks From this release, two-unit linear-topology
trunks are supported on all ICX stackable
models. The linear-topology trunk doubles the
bandwidth of the stacking ports between two
units and provides the same redundancy as a
two-unit ring through trunk load balancing.
Refer to Support for two-unit stack linear-
topology trunks on page 36 and to the
topology section for each ICX model for more
information.
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TABLE 2 Summary of enhancements in FastIron release 08.0.90 (continued)
Feature Description Location
New conguration rules for stacking ports
and trunks
Using the stack-port and stack-trunk
commands is more intuitive, and some previous
restrictions have been eliminated.
Refer to Changes to stack-port and stack-
trunk conguration on page 25 for more
information.
New downgrade behavior Stacking port format and conguration change
from this release. These changes create upgrade
and downgrade issues that require a dierent
strategy. The strategy includes storage of
pre-08.0.90 release backup les and the
introduction of related commands, show
pre-8090-startup-backup and erase pre-8090-
startup-backup.
Refer to Upgrade and downgrade changes
beginning with FastIron release 08.0.90 on
page 29 for more information.
Stacking deployment guidelines General guidance on stack deployment based on
new conguration capabilities has been added
to this guide.
Refer to Stacking deployment guidelines on
page 34 for more information.
Stack unit location You can assign a name to a stack unit ID, for
example, to indicate the building or rack
location.
Refer to Naming a stack unit on page 194 for
more information.
New show commands show stack zero-touch log, show stack zero-
touch ipc, show stack zero-touch status, show
pre-8090-startup-backup
Refer to the command page for each
command in the Ruckus FastIron Command
Reference Guide for more information.
New conguration commands erase pre-8090-startup-backup, stack
interactive-setup, stack zero-touch-enable,
and unit-name
Refer to related tasks in this guide and to the
command page for each command in the
Ruckus FastIron Command Reference Guide for
more information.
About This Guide
What’s new in this document
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Stacking Overview
• Stacking.........................................................................................................................................................................15
• Campus Fabric............................................................................................................................................................. 16
• Ruckus stackable models........................................................................................................................................... 18
• Stacking terminology.................................................................................................................................................. 19
Stacking
A stack is a group of devices that operate as a single chassis.
A Ruckus stack contains from two to 12 units congured in a ring or linear topology. The units in a stack are from the same
model family; that is, a stack can be an ICX 7150 stack, an ICX 7250 stack, an ICX 7450 stack, an ICX 7650 stack, an ICX 7750, or an
ICX 7850 stack.
The members of a stack may be located together. For example, Top-of-rack switches can form a stack that acts as a single switch
to manage data center access. Stack members can be physically separated, and the distance between stacking members
depends on the type of connector cables used.
Certain ber optic options increase the potential distance between stacks, which allows members of the same stack to reside in
dierent wiring closets, on dierent oors of one building, or in dierent buildings across the campus as illustrated in the
following gure. Refer to FastIron stacking distances and optics by device on page 50 for more information.
Ruckus stackable devices are connected either through dedicated stacking ports or through ports that can be congured for
either stacking or data. The location of stacking ports and conguration options dier by device type. Refer to the section on
each device type for more information.
FIGURE 1 Distributed campus stacking topology
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Network management and stack conguration
Even when all the switches within a stack are physically distributed, you can manage them as a single entity, enabling one-touch
conguration changes via a single IP address.
The active controller manages the other stack units. It maintains the information database for all stack members and downloads
software images as needed to all stack units. Each stack also has a standby controller for stack redundancy, and the stack can fail
over seamlessly to the standby.
Conguring the stack through the stack interactive-setup utility is straightforward. Stack zero-touch provisioning can be enabled
to automate stack interactive-setup so that no user intervention is required. Custom conguration can be combined with
automated setup if, for example, you want to add units, move stacking ports, create trunks, or transform a default stacking port
into a data uplink port.
Switching and routing advantages
Packet switching between ports on stack units is handled by the hardware. All protocols operate with stacking in the same way as
on a chassis system.
You can use stack connections to link distributed switches instead of standard inter-switch links with Layer 2 Spanning Tree
Protocol (STP) or Layer 3 routing. Using stack connections has signicant advantages:
•Layer 2 simplicity. Stack links do not need to be considered as part of the overall network topology, which means that
they can be used to provide resiliency, and Layer 3 routing is not needed to manage trac ows.
•No closed links. Because the stack links are internal to the switches, they are not seen as part of a Layer 2 network. This
means that all links can remain open and can be used to carry trac simultaneously, maximizing throughput.
•Fast failover. The rapid detection and recovery techniques used on stack links mean that the failure of a link or a switch
results in hitless failover, with no impact on user services.
The next section describes Switch Port Extender technology, which is based on an ICX 7650 or ICX 7750 core stack. Refer to the
Ruckus FastIron Campus Fabric Conguration Guide for more information.
Campus Fabric
Campus Fabric is sometimes referred to as Switch Port Extender (SPX).
Campus Fabric creates a more scalable architecture based on IEEE 802.1BR standards. Ruckus Campus Fabric architecture adds
ICX 7450, ICX 7250, or ICX 7150 devices congured as port extenders (PEs), or PE units, to a set of ICX 7750 or ICX 7650 stack units
congured as the control bridge. The ICX 7750 or ICX 7650 control bridge (CB) provides a single point of management for the
extended network. Active and standby controller functions are retained and continue to provide hitless recovery as well as
extended administrative functions. Campus Fabric greatly increases the number of access devices that the network can support.
The distributed CB at the center of Campus Fabric architecture manages PE units and hundreds to thousands of ports at the
network edge.
PE units are standards-based devices. Typically lower in cost, PE units rely on the CB for most network functions. As the network
expands, new PE units can be detected and added to the network automatically using dened Campus Fabric communication
protocols. PE units also inherit Premium-license features from the CB, which further reduces cost.
Campus Fabric architecture simplies network management by unifying core, aggregation, and access functions. As illustrated in
the following gure, a core stack (distributed chassis) serving as the CB connects to downstream Campus Fabric (PE) units that
aggregate large numbers of access devices.
Stacking Overview
Campus Fabric
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FIGURE 2 Campus Fabric domain build-out from an ICX 7750 or ICX 7650 CB stack
The following gure depicts three separate campuses, each with its own Campus Fabric domain, interconnected with a high-
speed backbone.
Stacking Overview
Campus Fabric
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FIGURE 3 Distributed campus network formed from connected Campus Fabric domains
Ruckus stackable models
All ICX 7450, ICX 7650, ICX 7750, and ICX 7850 devices and some ICX 7250 and ICX 7150 devices can be members of a Ruckus ICX
stack. ICX 7650 or ICX 7750 devices installed in a stack can also be congured as an 802.1br control bridge that manages ICX
7450, ICX 7250, or ICX 7150 devices congured as port extender (PE) units. Refer to the Ruckus FastIron Campus Fabric
Conguration Guide for information on 802.1br conguration.
Refer to the following sections for information on ICX 7150 stacking:
•ICX 7150 stack conguration overview on page 89
•ICX 7150 stacking topologies on page 92
•Planning to build a stack with 802.1br switch port extender capability on page 55.
Refer to the following sections for information on ICX 7250 stacking:
•ICX 7250 stack conguration overview on page 102
•ICX 7250 stacking topologies on page 103
•Planning to build a stack with 802.1br switch port extender capability on page 55.
Refer to the following sections for information on ICX 7450 stacking:
•ICX 7450 stack conguration overview on page 107
•ICX 7450 stacking topologies on page 109
•Planning to build a stack with 802.1br switch port extender capability on page 55.
Refer to the following sections for information on ICX 7650 stacking:
•ICX 7650 stack conguration overview on page 117
•ICX 7650 stacking topologies on page 119.
Stacking Overview
Ruckus stackable models
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Refer to the following sections for information on ICX 7750 stacking:
•ICX 7750 stack conguration overview on page 136
•ICX 7750 stacking topologies on page 138
•Planning to build a stack with 802.1br switch port extender capability on page 55.
Refer to the following sections for information on ICX 7850 stacking:
•ICX 7850 stack conguration overview on page 150
•ICX 7850 stacking topologies on page 151
For information about physical installation of each type of device, refer to the appropriate hardware installation guide.
Stacking terminology
Certain terms and roles specic to stacking are used throughout this guide. This section describes the roles stack units may
assume as well as terms key to understanding stacking.
NOTE
Refer to the Ruckus FastIron Campus Fabric Conguration Guide for terms specic to IEEE 802.1br and switch port
extender (SPX) capability.
Stack unit roles
•Active controller: Handles stack management and congures all system- and interface-level features.
•Standby controller: The stack member with the highest priority after the active controller. The standby controller takes
over if the current active controller fails.
•Stack member: A unit functioning in the stack in a capacity other than active controller or standby controller.
•Stack unit: Any device functioning within the stack, including the active controller and standby controller.
•Standalone unit: An eligible unit that is not part of a stack that can be interchanged with an active controller without
reload. A standalone unit becomes an active controller when any member joins the stack. An active controller becomes
a standalone when it loses all stack members.
Stacking terms
•Bootup role: The role a unit takes during the boot sequence. This role can be standalone, active controller, standby
controller, stack member, or PE (port extender, in an 802.1br Campus Fabric network).
•Clean unit: A unit that contains no startup ash conguration or runtime conguration. To erase old conguration
information, enter the erase startup-cong command and reset the unit without entering the write memory
command. If a stack member is without an active controller, you can access its local console and enter the stack
uncongure clean command to convert it to a clean unit. Converting a unit to a clean unit does not remove its loaded
licenses.
NOTE
An ICX 7650 device with startup-cong ash using 40-Gbps stacking ports that has no other conguration is
treated as a clean unit. Because an ICX 7650 device that uses 40-Gbps stacking requires the rear-module
stack-40g command followed by the write memory and reload commands to change the default 100-Gbps
stacking ports to 40-Gbps stacking ports, the related startup-cong ash must be present.
Stacking Overview
Stacking terminology
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•Control path: A path across stacking links dedicated to carrying control trac such as commands to program hardware
or software image data for upgrades. A stack unit must join the control path to operate fully in the stack.
•Default ports: FastIron devices used the default-ports to dene stacking port candidates. The stack default-ports
command is deprecated in Release 08.0.90. However, the default-ports are still used internally to dene which ports can
be stacking ports. From Release 08.0.90, these ports are often referred to as valid-stack-ports or simply as stack-ports.
See also the term Valid-stack-port set.
•Direction: Every stack unit has one or two directions for linking to other units. Each direction is either a stack-port or
stack-trunk. System output, for example, in show commands, uses "D0" or "dir 0" to indicate the rst direction.
•Dynamic conguration: A unit conguration that is dynamically learned by a new stack unit from the active controller. A
dynamic conguration disappears when the unit leaves the stack. The conguration becomes a static conguration after
you enter the write memory command.
•Interprocessor Communications (IPC): The process by which proprietary packets are exchanged between stack unit
CPUs.
•IronStack: A set of Ruckus stackable units (maximum of twelve) and their connected stacking links so that all units can be
accessed through their common connections. A single unit can manage the entire stack, and congurable entities, such
as VLANs and trunk groups, can have members on multiple stack units.
•Linear-topology trunk: A type of trunk available only in a two-unit stack to place stack-ports in both directions into a
single trunk. The resulting trunk achieves the same redundancy as a two-unit ring and doubles the bandwidth of the
stacking ports. All ports in the linear-topology trunk are used in forwarding between the two units, in contrast to a two-
unit ring, which uses only one direction, even when two paths are available. For ICX 7750 devices, a linear-topology trunk
may contain ports from two slots, for example, the conguration stack-trunk x/2/1 to x/2/6 x/3/1 to x/3/6. This feature
is available in FastIron release 08.0.90 and later. Refer to Support for two-unit stack linear-topology trunks on page 36.
•Non-Functioning stack unit: A stack unit that is recognized as a stack member, and is communicating with the active
controller over the Control Path, but is in a non-functioning state. A non-functioning stack unit will drop or discard trac
from non-stacked ports. This may be caused by an image or conguration mismatch.
•Reserved / provisional unit: A unit conguration number that has no physical unit associated with it.
•Sequential connection: Stack unit IDs, beginning with the active controller, are sequential. For example, 1, 3, 4, 6, 7 is
sequential if active controller is 1. 1, 7, 6, 4, 3 are non-sequential in a linear topology, but become sequential in a ring
topology when counted from the other direction as: 1, 3, 4, 6, 7. Gaps in numbering are allowed.
•Stack interactive-setup: An interactive tool that assists in discovering units and constructing a stacking system. The stack
interactive-setup utility can also discover new links between existing stack units, enlarge a stacking trunk, or change a
chain topology to a ring. The utility also provides an option for users to change member IDs interactively.
NOTE
Ruckus recommends the use of stack interactive-setup in preference to stack zero-touch provisioning (stack
zero-touch-enable conguration) because the interactive-setup utility allows you more exibility when
selecting units, assigning, IDs, or conguring a linear-topology trunk. Stack interactive-setup displays warning
messages about connection errors, making them easier to spot.
•Stack path: A data path formed across the stacking links to determine the set of stack members that are present in the
stack topology, and their locations in the stack.
•Stack slot: A slot in a stack is synonymous with a line model in a chassis.
•Stack topology: A contiguously-connected set of stack units in an ICX stack that are currently communicating with each
other. All units that are present in the stack topology appear in output from the show stack command.
•Stacking link: A cable that connects a stacking port on one unit to a stacking port on another unit.
Stacking Overview
Stacking terminology
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