Cajun P220G Quick guide

Cajun™ P220G Gigabit Switch
Configuration and Operation Guide (Document Number 610-0065-041)

Cajun P220G Gigabit Switch Configuration and Operation Guide 1.2
© Copyright LUCENT TECHNOLOGIES 1998 ALL RIGHTS RESERVED
Printed in USA, November 1998
The products, specifications, and other technical information regarding the products contained in this document are
subject to change without notice. All information in this document is believed to be accurate and reliable, but is
presented without warranty of any kind, express or implied, and users must take full responsibility for their application
of any products specified in this document. Lucent disclaims responsibility for errors which may appear in this
document, and it reserves the right, in its sole discretion and without notice, to make substitutions and modifications in
the products and practices described in this document.
Lucent, Cajun, CajunDocs, OpenTrunk, P550, and CajunView are trademarks of Lucent Technologies.
3Com is a registered trademark of 3COM corporation.
Cisco and Catalyst are registered trademarks of Cisco Systems, Inc.
Bay Networks is a registered trademark and System 5000 is a trademark of Bay Networks, Inc.
ALL OTHER TRADEMARKS MENTIONED IN THIS DOCUMENT ARE PROPERTY OF THEIR RESPECTIVE
OWNERS.
Document Number - 610-0065-041


Cajun P220G Configuration and Operation Guide iii

Manual Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .viii
Contacting Lucent Technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .viii
        
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Switch Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Crossbar Switch Fabric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Virtual Bridging Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Flood Pruning Using VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Hunt Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
OpenTrunk Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Spanning Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Buffer and Queue Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
Web-Based Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
Smart Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
RMON for Traffic Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
       
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Connecting to the Web Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
Configuring the Switch Using the Web Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
Logging into the Web Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
Entering Basic System Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
Setting the P220G’s System Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
Providing an Optional Online Help Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
Adding the Document Files to an Existing Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
Installing the Documentation Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
Entering the Server Location at the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
Configuring User Accounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
Configuring Port Parameters Using the Web Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-11
Configuring Physical Port Parameters on Gigabit Ports . . . . . . . . . . . . . . . . . . . . . . . . . .2-11
Configuring Switch Ports Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-13
Using the All Switch Ports Configuration Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-14
Configuring Port VLAN Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-15
Configuring Non-VLAN Switch Port Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-16
Examples of Switch Ports Settings for Various VLAN Connection Types . . . . . . . . . . . . .2-17
Setting Up SNMP Communities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-19
Changing the Console Serial Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-21

iv Cajun P220G Configuration and Operation Guide
     !"  #" $ % 
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Using Virtual LANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Creating and Implementing VLANs Using the Web Agent . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Creating a VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Configuring VLAN Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
Creating 3Com Mapping Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Creating Additional 3Com Mapping Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
Using Spanning Tree Setup and Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
Bridges in a P220G Switch Spanning Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
Implications of a Multi-layer Spanning Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
Managing Spanning Tree Using the Web Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
Configuring All Ports for Spanning Tree Fast Start Mode . . . . . . . . . . . . . . . . . . . . . .3-12
Configuring Spanning Tree Bridge Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14
Using Hunt Groups to Aggregate Bandwidth Between Switches . . . . . . . . . . . . . . . . . . . . . .3-16
Before Configuring Hunt Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-16
Configuring Hunt Groups Using the Embedded Web Server . . . . . . . . . . . . . . . . . . . . . .3-17
Adding Ports to a Hunt Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19
 &  ' ( $ )
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Buffer Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
P220G Switch Queues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Managing Buffers and Queues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Additional Buffers on Fast Ethernet Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
 *  ' $$ +$ #,
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Configuring the Address Forwarding Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Setting the Age Timer and Super Age Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Controlling Reconfiguration of Address Table Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
Displaying the Address Forwarding Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
Adding Entries to the Address Forwarding Table Manually . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7
 -  ,./ !0 1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Viewing Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Intrepreting Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
Setting Up a Mirror Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-8

Cajun P220G Configuration and Operation Guide v
 2  '    
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Interpreting Front Panel LED Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Checking Temperature Status and Setting Thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3
Checking Active Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4
Setting Log Sizes and Activating System Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5
Viewing the Switch Event and Shutdown Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8
Checking Power and Cooling Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-11
 3    11$  4
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Using the Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Basic Keyboard Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2
Command Line History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2
Scripts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3
Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3
Inband VLAN Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3
$5  6,$ ! , $   
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Downloading New Operational Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Preparing for the Download . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Downloading the New Operational Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Configuration Archival and Retrieval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Cajun P220G Switch Configuration and Operation Guide vii

 
This guide includes the following chapters:
❒Chapter 1 gives a brief overview of the P220G switch.
❒Chapter 2 explains how to configure the P220G switch.
❒Chapter 3 explains how to use VLANs, spanning trees, and hunt groups (also
known as link aggregation).
❒Chapter 4 explains how to monitor the P220G switch.
❒Chapter 5 explains how to manage buffers and queues.
❒Chapter 6 explains how to manage address forwarding tables.
❒Chapter 7 explains how to analyze your network using RMON and Ethernet
Statistics.
❒Chapter 8 provides the commands that can be used with the CLI.
❒Appendix A explains how to download new operational code.
 
For installation information, refer to the Cajun™ P220G Gigabit Switch Installation
Guide.
  
For information about Lucent products and services, please consult the Lucent World
Wide Web site at http://www.lucent.com.
To contact Lucent’s Technical Support, call:
1-800-237-0016, press 0, then press 73300

Preface
viii Cajun P220G Switch Configuration and Operation Guide

Cajun P220G Switch Configuration and Operation Guide 1-1




The P220G switch supports the requirements of the next wave of networking:
❒More bandwidth
❒Elimination of bottlenecks
❒Better manageability
❒Dependable multimedia support
The P220G switch offers an unrivaled combination of capacity and Class of
Service/Quality of Service (CoS/QoS) features. The system satisfies the demanding
requirements of the bandwidth-starved campus backbone and high-performance
workgroup environments.
The switch has the following features:
❒Seven fixed gigabit-speed Ethernet ports, fixed
❒Optional Expander module
• Four 10/100BASE-TX ports (autosensing)
• Two 100BASE-FX ports
• One 1000Base-SX or 1000Base-LX
• One 1000Base-SLX

Overview of the P220G Gigabit Switch
1-2 Cajun P220G Switch Configuration and Operation Guide
 
This section describes the following switch features:
❒Crossbar Switch Fabric
❒Virtual Bridging Functions
❒Flood Pruning Using VLANs
❒Hunt Groups
❒OpenTrunk Technology
❒Spanning Tree
❒Buffer and Queue Management
❒Web-Based Management
  
The crossbar switch matrix provides low latency, high throughput packet switching using
a crossbar architecture.
Crossbars are inherently more scalable than shared memory architectures.
Architecturally, you can add more capacity simply by adding more switch elements. By
comparison, shared memory switches have an inherent maximum upper boundary in
throughput that makes high-density, single-backplane gigabit switches impractical. This
means that as you increase the number of gigabit portsin your network, the architecture
can scale to meet your needs.
The crossbar supports:
❒Five fabric ports (three for fixed media ports, one for the Supervisor Module, and
one for the optional expansion card) running at full line rate
❒1.76 Gb/s (in and out) on each fabric port
❒31.68 Gb/s total capacity
❒Under-subscribed switching fabric
❒Single copy replication. When possible, input frames destined for output multiple
switch ports pass through the crossbar only once and are copied by the crossbar to
each destination.
❒Hardware-assisted multicast pruning. The switch forwards only to appropriate
destination switch ports.

Overview of the P220G Gigabit Switch
Cajun P220G Switch Configuration and Operation Guide 1-3
  
The switch design supports:
❒Over 24,000 Media Access Control (MAC) addresses in the switch address
forwarding table. This feature allows the switch to store forwarding information for
hosts in very large networks.
❒Segmented address tables qualified by address and Virtual LAN (VLAN)
membership. This feature allows the same host to appear on different VLANs on
different ports.
❒Optional per-VLAN spanning tree. This isolates loop control to smaller domains, so
spanning trees converge faster during reconfiguration.
   
VLANs provide network managers with two significant capabilities:
❒The ability to segment traffic in a “flat” switched network. This helps prevent traffic
from being forwarded to stations where it is not needed.
❒The ability to ignore physical switch locations when creating workgroups. VLANs
are logical constructions and can traverse physical switch boundaries.
The hardware supports Layer 1, port-based VLANs.
The P220G switch-based VLANs have the following characteristics:
❒Frames classified as they enter the switch using Layer 1 (Port-based).
❒Explicitly tagged VLAN packets are forwarded based on the information in the
packet. (See OpenTrunk Technology on page 1-4 for more information.)
❒Up to 1024 VLANs: VLANs define a set of ports in a flooding domain. Packets that
need to be flooded are sent only to ports participating in that VLAN.