l When a fault occurs on an active link, the backup link replaces the faulty one to ensure
nonstop services.
Figure 2-11 Link aggregation in LACP mode
RouterB
Eth-Trunk 1
RouterA
Eth-Trunk 1
Eth-Trunk
Active link
Backup link
Eth 2/0/1
Eth 2/0/2
Eth 2/0/3
Eth 2/0/2
Eth 2/0/1
Eth 2/0/3
Configuration Roadmap
The configuration roadmap is as follows:
1. Create an Eth-Trunk on each router and configure the Eth-Trunk to work in LACP mode.
2. Add member interfaces to the Eth-Trunk.
3. Set the LACP system priority and determine the Actor.
4. Set the maximum number of active interfaces in the Eth-Trunk.
5. Set LACP interface priorities and determine active links.
Procedure
Step 1 Create Eth-Trunk 1 and configure Eth-Trunk 1 to work in LACP mode.
# Configure RouterA.
<Huawei> system-view
[Huawei] sysname RouterA
[RouterA] interface eth-trunk 1
[RouterA-Eth-Trunk1] mode lacp-static
[RouterA-Eth-Trunk1] quit
# Configure RouterB.
<Huawei> system-view
[Huawei] sysname RouterB
[RouterB] interface eth-trunk 1
[RouterB-Eth-Trunk1] mode lacp-static
[RouterB-Eth-Trunk1] quit
Step 2 Add member interfaces to Eth-Trunk 1.
# Configure RouterA.
[RouterA] interface ethernet 2/0/1
[RouterA-Ethernet2/0/1] eth-trunk 1
[RouterA-Ethernet2/0/1] quit
[RouterA] interface ethernet 2/0/2
[RouterA-Ethernet2/0/2] eth-trunk 1
[RouterA-Ethernet2/0/2] quit
[RouterA] interface ethernet 2/0/3
[RouterA-Ethernet2/0/3] eth-trunk 1
[RouterA-Ethernet2/0/3] quit
# Configure RouterB.
Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Ethernet Switching
2 Link Aggregation Configuration
Issue 01 (2014-11-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
63
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