Huawei AR3200 Series User manual

Huawei AR3200 Series Enterprise Routers
V200R002C00
Configuration Guide - LAN
Issue 02
Date 2012-03-30
HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2012. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior written
consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and the
customer. All or part of the products, services and features described in this document may not be within the
purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,
and recommendations in this document are provided "AS IS" without warranties, guarantees or representations
of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute the warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address: Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website: http://www.huawei.com
Email: [email protected]
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About This Document
Intended Audience
This document describes how to configure the components for LAN services, including link
aggregation groups, VLANs, voice VLANs, MAC address tables, transparent bridging, as well
as GVRP, STP/RSTP, and MSTP protocols.
This document provides procedures and examples to illustrate the methods and application
scenarios for the service configurations.
This document is intended for:
lData configuration engineers
lCommissioning engineers
lNetwork monitoring engineers
lSystem maintenance engineers
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol Description
DANGER
Indicates a hazard with a high level of risk, which if not
avoided, will result in death or serious injury.
WARNING
Indicates a hazard with a medium or low level of risk, which
if not avoided, could result in minor or moderate injury.
CAUTION
Indicates a potentially hazardous situation, which if not
avoided, could result in equipment damage, data loss,
performance degradation, or unexpected results.
TIP
Indicates a tip that may help you solve a problem or save
time.
NOTE
Provides additional information to emphasize or supplement
important points of the main text.
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Command Conventions
The command conventions that may be found in this document are defined as follows.
Convention Description
Boldface The keywords of a command line are in boldface.
Italic Command arguments are in italics.
[ ] Items (keywords or arguments) in brackets [ ] are optional.
{ x | y | ... } Optional items are grouped in braces and separated by vertical
bars. One item is selected.
[ x | y | ... ] Optional items are grouped in brackets and separated by vertical
bars. One item is selected or no item is selected.
{ x | y | ... }*Optional items are grouped in braces and separated by vertical
bars. A minimum of one item or a maximum of all items can be
selected.
[ x | y | ... ]*Optional items are grouped in brackets and separated by vertical
bars. Several items or no item can be selected.
&<1-n> The parameter before the & sign can be repeated 1 to n times.
# A line starting with the # sign is comments.
Interface Numbering Conventions
Interface numbers used in this manual are examples. In device configuration, use the existing
interface numbers on devices.
Change History
Changes between document issues are cumulative. Therefore, the latest document version
contains all updates made to previous versions.
Changes in Issue 02 (2012-03-30)
Based on issue 01 (2011-12-30), the document is updated as follows:
The following information is modified:
l3.9.2 Example for Configuring Communication Between VLANs Using VLANIF
Interfaces
Changes in Issue 01 (2011-12-30)
Initial commercial release.
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Contents
About This Document.....................................................................................................................ii
1 Link Aggregation Configuration................................................................................................1
1.1 Introduction to Link Aggregation.......................................................................................................................2
1.2 Link Aggregation Supported by the AR3200.....................................................................................................2
1.3 Configuring Link Aggregation in Manual Load Balancing Mode.....................................................................3
1.3.1 Establishing the Configuration Task.........................................................................................................3
1.3.2 Creating an Eth-Trunk Interface................................................................................................................4
1.3.3 Configuring an Eth-Trunk to Work in Manual Load Balancing Mode.....................................................5
1.3.4 Adding Member Interfaces to an Eth-Trunk.............................................................................................6
1.3.5 (Optional) Configuring the Load Balancing Mode...................................................................................7
1.3.6 (Optional) Limiting the Number of Active Interfaces...............................................................................8
1.3.7 Checking the Configuration.......................................................................................................................9
1.4 Configuring Link Aggregation in Static LACP Mode.....................................................................................10
1.4.1 Establishing the Configuration Task.......................................................................................................10
1.4.2 Creating an Eth-Trunk Interface..............................................................................................................11
1.4.3 Configuring an Eth-Trunk to Work in Static LACP Mode.....................................................................12
1.4.4 Adding Member Interfaces to an Eth-Trunk...........................................................................................12
1.4.5 (Optional) Configuring the Load Balancing Mode.................................................................................14
1.4.6 (Optional) Limiting the Number of Active Interfaces.............................................................................15
1.4.7 (Optional) Setting the LACP Priority of the System...............................................................................16
1.4.8 (Optional) Setting the LACP Priority for an Interface............................................................................16
1.4.9 (Optional) Enabling LACP Preemption and Setting the Preemption Delay...........................................17
1.4.10 (Optional) Setting the Timeout Interval for Receiving LACP Packets.................................................18
1.4.11 Checking the Configuration...................................................................................................................18
1.5 Maintaining Link Aggregation.........................................................................................................................19
1.5.1 Clearing Statistics of LACP Packets.......................................................................................................19
1.5.2 Debugging the Link Aggregation Group.................................................................................................20
1.5.3 Monitoring the Operating Status of the Link Aggregation Group..........................................................20
1.6 Configuration Examples...................................................................................................................................21
1.6.1 Example for Configuring Link Aggregation in Manual Load Balancing Mode.....................................21
1.6.2 Example for Configuring Link Aggregation in Static LACP Mode.......................................................23
1.6.3 Example for Configuring Layer 3 Link Aggregation..............................................................................26
2 Transparent Bridging Configuration.......................................................................................30
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2.1 Overview of Transparent Bridging...................................................................................................................31
2.2 Transparent Bridging Supported by the AR3200.............................................................................................34
2.3 Configuring Local Bridging.............................................................................................................................35
2.3.1 Establishing the Configuration Task.......................................................................................................35
2.3.2 Creating a Bridge Group..........................................................................................................................36
2.3.3 Adding Local Interfaces to a Bridge Group............................................................................................37
2.3.4 (Optional) Disabling a Bridge Group from Bridging Specified Protocol Packets..................................38
2.3.5 Checking the Configuration.....................................................................................................................38
2.4 Configuring Local Bridging Integrated with IP Routing..................................................................................39
2.4.1 Establishing the Configuration Task.......................................................................................................40
2.4.2 Creating a Bridge Group..........................................................................................................................40
2.4.3 Adding Local Interfaces to a Bridge Group............................................................................................41
2.4.4 Configuring a Bridge-if Interface for a Bridge Group.............................................................................43
2.4.5 Enabling IP Routing for a Bridge Group.................................................................................................43
2.4.6 (Optional) Disabling a Bridge Group from Bridging Specified Protocol Packets..................................44
2.4.7 Checking the Configuration.....................................................................................................................44
2.5 Configuring Remote Bridging..........................................................................................................................45
2.5.1 Establishing the Configuration Task.......................................................................................................45
2.5.2 Creating a Bridge Group..........................................................................................................................46
2.5.3 Adding User-side Interfaces to a Bridge Group......................................................................................47
2.5.4 Adding Network-side Interfaces to a Bridge Group................................................................................48
2.5.5 (Optional) Disabling a Bridge Group from Bridging Specified Protocol Packets..................................50
2.5.6 (Optional) Configuring VLAN ID Transparent Transmission................................................................51
2.5.7 Checking the Configuration.....................................................................................................................51
2.6 Configuring Remote Bridging Integrated with IP Routing..............................................................................52
2.6.1 Establishing the Configuration Task.......................................................................................................52
2.6.2 Creating a Bridge Group..........................................................................................................................53
2.6.3 Adding User-side Interfaces to a Bridge Group......................................................................................54
2.6.4 Adding Network-side Interfaces to a Bridge Group................................................................................55
2.6.5 Configuring a Bridge-if Interface for a Bridge Group.............................................................................57
2.6.6 Enabling IP Routing for a Bridge Group.................................................................................................58
2.6.7 (Optional) Disabling a Bridge Group from Bridging Specified Protocol Packets..................................58
2.6.8 Checking the Configuration.....................................................................................................................59
2.7 Maintaining Transparent Bridging...................................................................................................................60
2.7.1 Monitoring the Operation of Bridge Groups...........................................................................................60
2.7.2 Clearing the Traffic Statistics of a Bridge Group....................................................................................61
2.7.3 Clearing the Traffic Statistics on the Bridge-if Interface of a Bridge Group..........................................61
2.8 Configuration Example.....................................................................................................................................62
2.8.1 Example for Configuring Local Bridging...............................................................................................62
2.8.2 Example for Configuring Local Bridging with IP Routing.....................................................................65
2.8.3 Example for Configuring Remote Bridging............................................................................................67
2.8.4 Example for Configuring Remote Bridging with IP Routing..................................................................70
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2.8.5 Example for Configuring Remote Bridging with VLAN ID Transparent Transmission........................73
3 VLAN Configuration..................................................................................................................78
3.1 Introduction to VLAN......................................................................................................................................79
3.2 VLAN Features Supported by the AR3200......................................................................................................79
3.3 Creating VLANs...............................................................................................................................................81
3.3.1 Establishing the Configuration Task.......................................................................................................81
3.3.2 Creating a VLAN.....................................................................................................................................82
3.3.3 (Optional) Creating VLANs in a Batch...................................................................................................82
3.3.4 Checking the Configuration.....................................................................................................................83
3.4 Adding Interfaces to a VLAN..........................................................................................................................83
3.4.1 Establishing the Configuration Task.......................................................................................................83
3.4.2 Adding an Access Interface to a VLAN..................................................................................................84
3.4.3 Adding a Trunk Interface to a VLAN......................................................................................................85
3.4.4 Adding a Hybrid Interface to a VLAN....................................................................................................86
3.4.5 (Optional) Specifying the Default VLAN for a Trunk Interface.............................................................86
3.4.6 (Optional) Specifying the Default VLAN for a Hybrid Interface...........................................................87
3.4.7 Checking the Configuration.....................................................................................................................88
3.5 Configuring VLANIF Interfaces to Implement Layer-3 Communication.......................................................89
3.5.1 Establishing the Configuration Task.......................................................................................................89
3.5.2 Creating a VLANIF Interface..................................................................................................................90
3.5.3 Assigning an IP Address to a VLANIF Interface....................................................................................90
3.5.4 (Optional) Setting the MTU of a VLANIF Interface...............................................................................90
3.5.5 (Optional) Configuring VLAN Damping................................................................................................91
3.5.6 Checking the Configuration.....................................................................................................................92
3.6 Configuring VLAN Aggregation......................................................................................................................92
3.6.1 Establishing the Configuration Task.......................................................................................................92
3.6.2 Configuring Sub-VLANs........................................................................................................................93
3.6.3 Creating a Super-VLAN..........................................................................................................................94
3.6.4 Assigning an IP Address to the VLANIF Interface of the Super-VLAN................................................95
3.6.5 Configuring Proxy ARP for the Super-VLAN........................................................................................95
3.6.6 Checking the Configuration.....................................................................................................................96
3.7 Configuring MUX VLAN................................................................................................................................97
3.7.1 Establishing the Configuration Task.......................................................................................................97
3.7.2 Configuring a Principal VLAN...............................................................................................................98
3.7.3 Configuring Subordinate VLANs............................................................................................................98
3.7.4 Enabling the MUX VLAN Function on an Interface..............................................................................99
3.7.5 Checking the Configuration.....................................................................................................................99
3.8 Configuring a Management VLAN................................................................................................................100
3.8.1 Establishing the Configuration Task.....................................................................................................100
3.8.2 Configuring Management VLAN Functions.........................................................................................100
3.8.3 Checking the Configuration...................................................................................................................101
3.9 Configuration Examples.................................................................................................................................101
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3.9.1 Example for Configuring Interface-based VLAN Assignment.............................................................101
3.9.2 Example for Configuring Communication Between VLANs Using VLANIF Interfaces....................104
3.9.3 Example for Configuring VLAN Damping...........................................................................................106
3.9.4 Example for Configuring VLAN Aggregation......................................................................................108
3.9.5 Example for Configuring the MUX VLAN Function...........................................................................111
3.9.6 Example for Configuring Inter-Device MUX VLAN...........................................................................114
3.9.7 Example for Configuring Communication Across a Layer 3 Network Using VLANIF Interfaces......119
4 Voice VLAN Configuration.....................................................................................................123
4.1 Voice VLAN Overview..................................................................................................................................124
4.2 Voice VLAN Features Supported by the AR3200.........................................................................................124
4.3 Configuring a Voice VLAN...........................................................................................................................125
4.3.1 Establishing the Configuration Task.....................................................................................................125
4.3.2 Enabling the Voice VLAN Function on an Interface............................................................................127
4.3.3 Setting the OUI of the Voice VLAN.....................................................................................................127
4.3.4 (Optional) Setting the Mode for Adding an Interface to the Voice VLAN...........................................128
4.3.5 (Optional) Configuring an 802.1p Priority and a DSCP Value for the Voice VLAN...........................129
4.3.6 (Optional) Setting the Voice VLAN Aging Time.................................................................................130
4.3.7 (Optional) Setting the Working Mode of the Voice VLAN..................................................................130
4.3.8 (Optional) Enabling an Interface to Communicate with Non-Huawei Voice Devices.........................131
4.3.9 Checking the Configuration...................................................................................................................132
4.4 Configuration Examples.................................................................................................................................132
4.4.1 Example for Configuring a Voice VLAN in Auto Mode......................................................................132
4.4.2 Example for Configuring a Voice VLAN in Manual Mode..................................................................136
5 GVRP Configuration................................................................................................................141
5.1 GVRP Overview.............................................................................................................................................142
5.2 GVRP Features Supported by the AR3200....................................................................................................145
5.3 Configuring GVRP.........................................................................................................................................146
5.3.1 Establishing the Configuration Task.....................................................................................................146
5.3.2 Enabling GVRP.....................................................................................................................................146
5.3.3 (Optional) Setting the Registration Mode for a GVRP Interface..........................................................147
5.3.4 (Optional) Setting the GARP Timers....................................................................................................148
5.3.5 Checking the Configuration...................................................................................................................149
5.4 Maintaining GVRP.........................................................................................................................................150
5.4.1 Clearing GARP Statistics......................................................................................................................150
5.5 Configuration Examples.................................................................................................................................150
5.5.1 Example for Configuring GVRP...........................................................................................................150
6 MAC Address Table Configuration.......................................................................................155
6.1 MAC Address Table Overview......................................................................................................................156
6.2 MAC Address Table Features Supported by the AR3200.............................................................................156
6.3 Configuring the MAC Address Table............................................................................................................157
6.3.1 Establishing the Configuration Task.....................................................................................................157
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6.3.2 Creating a Static MAC Address Entry..................................................................................................157
6.3.3 Creating a Blackhole MAC Address Entry...........................................................................................158
6.3.4 (Optional) Setting the Aging Time for Dynamic MAC Address Entries..............................................158
6.3.5 (Optional) Disabling MAC Address Learning......................................................................................159
6.3.6 Checking the Configuration...................................................................................................................160
6.4 Configuring Port Security...............................................................................................................................161
6.4.1 Establishing the Configuration Task.....................................................................................................161
6.4.2 Enabling Port Security...........................................................................................................................162
6.4.3 Enabling the Sticky MAC Function on an Interface.............................................................................162
6.4.4 (Optional) Setting the Maximum Number of MAC Addresses Learned by an Interface......................163
6.4.5 (Optional) Configuring the Protective Action for an Interface.............................................................164
6.4.6 (Optional) Setting the Aging Time for Secure Dynamic MAC Addresses on an Interface..................164
6.4.7 Checking the Configuration...................................................................................................................165
6.5 Configuring Limitation on MAC Address Learning......................................................................................165
6.5.1 Establishing the Configuration Task.....................................................................................................165
6.5.2 Limiting MAC Address Learning on an Interface.................................................................................166
6.5.3 Limiting MAC Address Learning Based on VLANs............................................................................166
6.5.4 Checking the Configuration...................................................................................................................167
6.6 Configuring MAC Address Flapping Detecting Function.............................................................................168
6.6.1 Establishing the Configuration Task.....................................................................................................168
6.6.2 Configuring MAC Address Flapping Detection....................................................................................168
6.6.3 Unblocking an Interface or a MAC Address.........................................................................................169
6.6.4 Checking the Configuration...................................................................................................................169
6.7 Configuring the Router to Discard Packets with an Invalid All-0 MAC Address.........................................170
6.7.1 Establishing the Configuration Task.....................................................................................................170
6.7.2 Configuring the Router to Discarding Packets with All-0 MAC Addresses.........................................170
6.7.3 Triggering an Alarm for Packets with All-0 MAC Addresses..............................................................171
6.7.4 Checking the Configuration...................................................................................................................171
6.8 Maintaining the MAC Address Table............................................................................................................172
6.8.1 Debugging the MAC Address Table.....................................................................................................172
6.9 Configuration Examples.................................................................................................................................172
6.9.1 Example for Configuring the MAC Address Table...............................................................................172
6.9.2 Example for Configuring Port Security.................................................................................................175
6.9.3 Example for Configuring MAC Address Limiting Rules on Interfaces................................................176
6.9.4 Example for Configuring a MAC Address Learning Rule in a VLAN.................................................178
7 STP/RSTP Configuration.........................................................................................................181
7.1 STP/RSTP Overview......................................................................................................................................182
7.2 STP/RSTP Features Supported by the AR3200.............................................................................................186
7.3 Configuring Basic STP/RSTP Functions.......................................................................................................188
7.3.1 Establishing the Configuration Task.....................................................................................................188
7.3.2 Configuring the STP/RSTP Mode.........................................................................................................190
7.3.3 (Optional) Configuring Switching Device Priorities.............................................................................190
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7.3.4 (Optional) Configuring the Path Cost for a Port....................................................................................191
7.3.5 (Optional) Configuring Port Priorities...................................................................................................192
7.3.6 Enabling STP/RSTP..............................................................................................................................193
7.3.7 Checking the Configuration...................................................................................................................193
7.4 Configuring STP/RSTP Parameters on an Interface......................................................................................194
7.4.1 Establishing the Configuration Task.....................................................................................................196
7.4.2 Configuring System Parameters............................................................................................................197
7.4.3 Configuring Port Parameters.................................................................................................................199
7.4.4 Checking the Configuration...................................................................................................................201
7.5 Configuring RSTP Protection Functions........................................................................................................202
7.5.1 Establishing the Configuration Task.....................................................................................................202
7.5.2 Configuring BPDU Protection on a Switching Device.........................................................................204
7.5.3 Configuring TC Protection on a Switching Device...............................................................................204
7.5.4 Configuring Root Protection on a Port..................................................................................................205
7.5.5 Configuring Loop Protection on a Port.................................................................................................206
7.5.6 Checking the Configuration...................................................................................................................207
7.6 Maintaining STP/RSTP..................................................................................................................................207
7.6.1 Clearing STP/RSTP Statistics...............................................................................................................208
7.7 Configuration Examples.................................................................................................................................208
7.7.1 Example for Configuring Basic STP Functions....................................................................................208
7.7.2 Example for Configuring Basic RSTP Functions..................................................................................212
8 MSTP Configuration.................................................................................................................218
8.1 MSTP Introduction.........................................................................................................................................220
8.2 MSTP Features Supported by the AR3200....................................................................................................227
8.3 Configuring Basic MSTP Functions...............................................................................................................229
8.3.1 Establishing the Configuration Task.....................................................................................................230
8.3.2 Configuring the MSTP Mode................................................................................................................232
8.3.3 Configuring and Activating an MST Region........................................................................................232
8.3.4 (Optional) Configuring a Priority for a Switching Device in an MSTI.................................................234
8.3.5 (Optional) Configuring a Path Cost of a Port in an MSTI.....................................................................235
8.3.6 (Optional) Configuring a Port Priority in an MSTI...............................................................................236
8.3.7 Enabling MSTP.....................................................................................................................................237
8.3.8 Checking the Configuration...................................................................................................................237
8.4 Configuring MSTP Parameters on an Interface.............................................................................................239
8.4.1 Establishing the Configuration Task.....................................................................................................239
8.4.2 Configuring System Parameters............................................................................................................240
8.4.3 Configuring Port Parameters.................................................................................................................242
8.4.4 Checking the Configuration...................................................................................................................244
8.5 Configuring MSTP Protection Functions.......................................................................................................244
8.5.1 Establishing the Configuration Task.....................................................................................................245
8.5.2 Configuring BPDU Protection on a Switching Device.........................................................................247
8.5.3 Configuring TC Protection on a Switching Device...............................................................................248
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8.5.4 Configuring Root Protection on an Interface........................................................................................248
8.5.5 Configuring Loop Protection on an Interface........................................................................................249
8.5.6 Checking the Configuration...................................................................................................................250
8.6 Configuring MSTP Interoperability Between Huawei Devices and Non-Huawei Devices...........................251
8.6.1 Establishing the Configuration Task.....................................................................................................251
8.6.2 Configuring a Proposal/Agreement Mechanism...................................................................................251
8.6.3 Configuring the MSTP Protocol Packet Format on an Interface...........................................................253
8.6.4 Enabling the Digest Snooping Function................................................................................................253
8.6.5 Checking the Configuration...................................................................................................................254
8.7 Maintaining MSTP.........................................................................................................................................255
8.7.1 Clearing MSTP Statistics.......................................................................................................................255
8.8 Configuration Examples.................................................................................................................................255
8.8.1 Example for Configuring Basic MSTP Functions.................................................................................255
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1 Link Aggregation Configuration
About This Chapter
This chapter describes link aggregation concepts and how to configure link aggregation groups
while also providing configuration examples.
1.1 Introduction to Link Aggregation
This section describes the concept of link aggregation.
1.2 Link Aggregation Supported by the AR3200
This section describes the link aggregation features supported by the AR3200.
1.3 Configuring Link Aggregation in Manual Load Balancing Mode
This section describes how to configure link aggregation in manual load balancing mode.
1.4 Configuring Link Aggregation in Static LACP Mode
This section describes how to configure link aggregation in static LACP mode.
1.5 Maintaining Link Aggregation
This section describes how to clear the statistics of received and sent LACP packets, debug the
link aggregation group, and monitor the running status of the link aggregation group.
1.6 Configuration Examples
This section provides configuration examples of link aggregation in manual load balancing mode
and in static LACP mode.
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1.1 Introduction to Link Aggregation
This section describes the concept of link aggregation.
Link aggregation refers to a method of bundling a group of physical interfaces into a logical
interface to increase bandwidth and improve reliability. These types of groupings are also called
multi-interface load sharing groups or link aggregation groups (LAGs). For details, refer to
IEEE802.3ad.
Link aggregation provides redundancy protection for communication channels among between
devices without upgrading the hardware to higher capacities.
1.2 Link Aggregation Supported by the AR3200
This section describes the link aggregation features supported by the AR3200.
Manual Load Balancing Mode
In load balancing mode, you can manually add member interfaces to a link aggregation group
(LAG). All the interfaces configured with load balancing are in forwarding state. The AR3200
can perform load balancing based on destination MAC addresses, source MAC addresses,
Exclusive-Or of source and destination MAC addresses, source IP addresses, destination IP
addresses, or Exclusive-Or of source and destination IP addresses.
The manual load balancing mode does not use the Link Aggregation Control Protocol (LACP).
The AR3200 can use this mode if the peer device does not support LACP.
Static LACP Mode
In static LACP mode, devices at two ends of a link negotiate aggregation parameters by
exchanging LACP packets. After the negotiation is complete, the two devices determine the
active interface and the inactive interface. In this mode, you need to manually create an Eth-
Trunk and add members to it. LACP negotiation determines which interfaces are active and
which ones are inactive.
The static LACP mode is also called the M:N mode. In this mode, links load balance traffic and
provide redundancy backup at the same time. In an LAG, M links are active and they forward
data in load balancing mode. N links are inactive and they function as backup links. The backup
links do not forward data. If an active link fails, data forwarding is switched to the backup link
with the highest priority, and the status of the backup link changes to active.
In static LACP mode, some links function as backup links. In manual load balancing mode, all
member interfaces work in forwarding state to share the traffic. This is the main difference
between the two modes.
Active and Inactive Interfaces
Active interfaces refer to the interfaces in active state that forward data. The interfaces that do
not forward data and are in inactive state are called inactive interfaces. Depending on the link
aggregation mode the interfaces use, active and inactive interfaces are classified as follows:
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lManual load balancing mode: Generally, all member interfaces are active interfaces unless
a fault occurs.
lStatic LACP mode: The interfaces connected to M links are active interfaces that forward
data; the interfaces connected to N links are inactive interfaces that are used for redundancy
backup.
Actor and Partner
In static LACP mode, the device in the link aggregation group with a higher LACP priority is
the Actor and the device with a lower LACP priority is the Partner.
If the two devices have the same LACP priority, the Actor is selected based on the MAC
addresses of the devices. The device with a smaller MAC address becomes the Actor.
Differentiating the Actor and the Partner keeps the active interfaces at both ends consistent. If
both ends select active interfaces according to the priorities of their own interfaces, the active
interfaces may be different at two ends. To prevent this problem, devices at two ends determine
the Actor first, and the Partner selects active interfaces according to priorities of the interfaces
on the Actor. Figure 1-1 shows the process of selecting active interfaces.
Figure 1-1 Determining the active links in static LACP mode
RouterA RouterB
RouterBRouterA
The Actor determines
the active link
Device with high
priority
Device with low
priority
Active interface selected by RouterA
Active interface selected by RouterB
1.3 Configuring Link Aggregation in Manual Load
Balancing Mode
This section describes how to configure link aggregation in manual load balancing mode.
1.3.1 Establishing the Configuration Task
Applicable Environment
When the bandwidth or the reliability of two devices should be increased and either of the two
devices does not support LACP, create an Eth-Trunk in manual load balancing mode on the
devices and add member interfaces to the Eth-Trunk, as shown in Figure 1-2.
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Figure 1-2 Network diagram of link aggregation in manual load balancing mode
RouterA RouterB
Eth-Trunk 1 Eth-Trunk 1
Eth-Trunk
Pre-configuration Tasks
Before configuring an Eth-Trunk in manual load balancing mode, complete the following tasks:
lPowering on the AR3200
lCreating an Eth-Trunk
Data Preparation
To configure an Eth-Trunk in manual load balancing mode, you need the following data.
No. Data
1Number of the Eth-Trunk in manual load balancing mode
2 Types and numbers of the member interfaces
1.3.2 Creating an Eth-Trunk Interface
Context
Eth-Trunk interfaces increase bandwidth and improve transmission reliability. You can
configure Layer 2 and Layer 3 Eth-Trunk interfaces for different applications on a network.
Procedure
lCreating a Layer 2 Eth-Trunk interface
1. Run:
system-view
The system view is displayed.
2. Run:
interface eth-trunk trunk-id
A Layer 2 Eth-Trunk interface is created.
By default, an Eth-Trunk interface works in Layer 2 mode.
lCreating a Layer 3 Eth-Trunk interface
1. Run:
system-view
The system view is displayed.
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2. Run:
interface eth-trunk trunk-id
A Layer 2 Eth-Trunk interface is created.
3. Run:
undo portswitch
The Eth-Trunk interface is configured to work in Layer 3 mode.
4. Run:
ip address ip-address { mask | mask-length } [ sub ]
An IP address is configured for the Layer 3 Eth-Trunk interface.
5. (Optional) Run:
mtu mtu
The maximum transmission unit (MTU) of the Eth-Trunk interface is set.
The default MTU of an interface is 1500 bytes.
CAUTION
lThe mtu command cannot be used on Layer 2 Eth-Trunk interfaces.
lDirectly connected interfaces must use the same MTU. If you change the MTU of
an interface, you must use the mtu command to change the MTU of the peer
interface to the same value; otherwise, services may be interrupted.
lAfter changing the MTU on an interface, run the shutdown command and then
the undo shutdown command on the interface to make the setting take effect.
----End
1.3.3 Configuring an Eth-Trunk to Work in Manual Load Balancing
Mode
Context
Perform the following steps on the AR3200 to configure an Eth-Trunk in manual load balancing
mode.
NOTE
Check whether the Eth-Trunk contains member interfaces before you configure the operation mode of the
Eth-Trunk. If the Eth-Trunk contains member interfaces, the operation mode of the Eth-Trunk cannot be
changed. To delete member interfaces from the Eth-Trunk, run the undo eth-trunk command in the
interface view or run the undo trunkport interface-type { interface-number1 [ to interface-number2 ] }
&<1-8> command in the Eth-Trunk view.
Procedure
Step 1 Run:
system-view
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The system view is displayed.
Step 2 Run:
interface eth-trunk trunk-id
The Eth-Trunk interface view is displayed.
Step 3 Run:
mode manual load-balance
The operation mode of the Eth-Trunk is set to manual load balancing.
By default, an Eth-Trunk works in manual load balancing mode.
If the local device is configured with an Eth-Trunk in manual load balancing mode, configure
the Eth-Trunk in manual load balancing mode on the peer device.
----End
1.3.4 Adding Member Interfaces to an Eth-Trunk
Context
Perform the following steps on the AR3200 to configure member interfaces of an Eth-Trunk.
Procedure
lConfiguration in the Eth-Trunk interface view
1. Run:
system-view
The system view is displayed.
2. Run:
interface eth-trunk trunk-id
The Eth-Trunk interface view is displayed.
3. Run:
trunkport interface-type { interface-number1 [ to interface-number2 ] }
&<1-8>
Member interfaces are added to the Eth-Trunk.
lConfiguration in the member interface view
1. Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
The interface view is displayed.
3. Run:
eth-trunk trunk-id
The interface is added to the Eth-Trunk.
When adding an interface to an Eth-Trunk, pay attention to the following points:
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–Member interfaces of a Layer 2 Eth-Trunk must be Layer 2 interfaces, and member
interfaces of a Layer 3 Eth-Trunk must be Layer 3 interfaces.
–An Eth-Trunk supports a maximum of eight member interfaces.
–A member interface cannot have any service or static MAC address configured.
–Ensure that interfaces added to an Eth-Trunk are hybrid interfaces (the default interface
type).
–An Eth-Trunk interface cannot have other Eth-Trunk interfaces as member interfaces.
–An Ethernet interface can be added to only one Eth-trunk interface. To add the Ethernet
interface to another Eth-trunk, delete the Ethernet interface from the current Eth-Trunk
first.
–Member interfaces of an Eth-trunk must be the same type. For example, an FE interface
and a GE interface cannot be added to the same Eth-trunk interface.
–Ethernet interfaces on different LPUs can be added to the same Eth-Trunk.
–The peer interface directly connected to a member interface of the local Eth-Trunk must
also be added to an Eth-Trunk; otherwise, the two ends cannot communicate.
–When member interfaces have different rates, the interfaces with lower rates may
become congested and packet loss may occur.
–After an interface is added to an Eth-Trunk, MAC address learning is performed by the
Eth-Trunk rather than the member interfaces.
–G.SHDSL interfaces that work in PTM mode cannot be added to an Eth-Trunk.
----End
1.3.5 (Optional) Configuring the Load Balancing Mode
Context
Perform the following steps on the AR3200 to configure the load balancing mode for an Eth-
Trunk interface.
Procedure
lConfiguring a Layer 2 Eth-Trunk interface
1. Run:
system-view
The system view is displayed.
2. Run:
load-balance { dst-ip | dst-mac | src-ip | src-mac | src-dst-ip | src-dst-
mac }
The load balancing mode is configured for the Eth-Trunk.
By default, the load balancing mode of a Layer 2 Eth-Trunk is src-dst-mac.
Member interfaces of an Eth-Trunk perform per-flow load balancing. The local end
and the remote end can use different load balancing modes, without affecting each
other.
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NOTE
All Layer 2 Eth-Trunks in the system must use the same load balancing mode. If the load
balancing mode of one Eth-Trunk is changed, all the other Eth-Trunks use the new load
balancing mode.
lConfiguring a Layer 3 Eth-Trunk interface
1. Run:
system-view
The system view is displayed.
2. Run:
interface eth-trunk trunk-id
The Eth-Trunk interface view is displayed.
3. Run:
load-balance { dst-ip | dst-mac | src-ip | src-mac | src-dst-ip | src-dst-
mac }
The load balancing mode is configured for the Eth-Trunk.
By default, the load balancing mode of a Layer 3 Eth-Trunk is src-dst-ip.
Member interfaces of an Eth-Trunk perform per-flow load balancing. The local end
and the remote end can use different load balancing modes, without affecting each
other.
----End
1.3.6 (Optional) Limiting the Number of Active Interfaces
Context
Perform the following steps on the AR3200 to limit the number of active interfaces.
Procedure
lSetting the maximum number of interfaces that determine bandwidth for an Eth-Trunk
1. Run:
system-view
The system view is displayed.
2. Run:
interface eth-trunk trunk-id
The Eth-Trunk interface view is displayed.
3. Run:
max bandwidth-affected-linknumber link-number
The maximum number of interfaces that determine bandwidth for the Eth-Trunk is
set.
By default, the maximum number of interfaces that determine bandwidth for an Eth-
Trunk is 8.
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NOTE
lThe maximum number of interfaces that determine bandwidth for an Eth-Trunk on the local
AR3200 and that on the remote AR3200 can be different. If the values of this setting at the two
ends are different, the smaller value is used.
lSetting the minimum number of active interfaces
1. Run:
system-view
The system view is displayed.
2. Run:
interface eth-trunk trunk-id
The Eth-Trunk interface view is displayed.
3. Run:
least active-linknumber link-number
The minimum number of active interfaces is set.
By default, the minimum number of active interfaces is 1.
In manual load balancing mode, you can determine the minimum number of active
interfaces in the Eth-Trunk. If the number of active interfaces is smaller than the minimum
value, the status of the Eth-Trunk becomes Down.
NOTE
lThe minimum number of active interfaces on the local AR3200 and that on the remote
AR3200 can be different. If the values of this setting at the two ends are different, the larger value
is used.
----End
1.3.7 Checking the Configuration
Procedure
lRun the display trunkmembership eth-trunk trunk-id command to display the member
interfaces of the Eth-Trunk.
lRun the display eth-trunk [ trunk-id ] command to display the load balancing status of the
Eth-Trunk.
----End
Example
Run the display trunkmembership eth-trunk command to view the operation mode, total
number of member interfaces, number of member interfaces in Up state, and information about
the member interfaces.
<Huawei> display trunkmembership eth-trunk 1
Trunk ID: 1
Used status: VALID
TYPE: ethernet
Working Mode : Normal
Number Of Ports in Trunk = 2
Number Of Up Ports in Trunk = 0
Operate status: down
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