[LSW1-GigabitEthernet1/0/3] stp disable
[LSW1-GigabitEthernet1/0/3] sep segment 1 edge secondary
[LSW1-GigabitEthernet1/0/3] sep segment 2 edge secondary
[LSW1-GigabitEthernet1/0/3] quit
# Configure LSW2.
[LSW2] interface gigabitethernet 1/0/1
[LSW2-GigabitEthernet1/0/1] stp disable
[LSW2-GigabitEthernet1/0/1] sep segment 1
[LSW2-GigabitEthernet1/0/1] sep segment 2
[LSW2-GigabitEthernet1/0/1] quit
[LSW2] interface gigabitethernet 1/0/2
[LSW2-GigabitEthernet1/0/2] stp disable
[LSW2-GigabitEthernet1/0/2] sep segment 1
[LSW2-GigabitEthernet1/0/2] sep segment 2
[LSW2-GigabitEthernet1/0/2] quit
# Configure LSW3.
[LSW3] interface gigabitethernet 1/0/1
[LSW3-GigabitEthernet1/0/1] stp disable
[LSW3-GigabitEthernet1/0/1] sep segment 1
[LSW3-GigabitEthernet1/0/1] sep segment 2
[LSW3-GigabitEthernet1/0/1] quit
[LSW3] interface gigabitethernet 1/0/2
[LSW3-GigabitEthernet1/0/2] stp disable
[LSW3-GigabitEthernet1/0/2] sep segment 1
[LSW3-GigabitEthernet1/0/2] sep segment 2
[LSW3-GigabitEthernet1/0/2] quit
# Configure LSW4.
[LSW4] interface gigabitethernet 1/0/1
[LSW4-GigabitEthernet1/0/1] stp disable
[LSW4-GigabitEthernet1/0/1] sep segment 1
[LSW4-GigabitEthernet1/0/1] sep segment 2
[LSW4-GigabitEthernet1/0/1] quit
[LSW4] interface gigabitethernet 1/0/3
[LSW4-GigabitEthernet1/0/3] stp disable
[LSW4-GigabitEthernet1/0/3] sep segment 1
[LSW4-GigabitEthernet1/0/3] sep segment 2
[LSW4-GigabitEthernet1/0/3] quit
Step 4 Specify an interface to block.
# Configure delayed preemption and the mode of blocking an interface to be based on the device
name and interface name on LSW1 where the primary edge interface is located.
[LSW1] sep segment 1
[LSW1-sep-segment1] block port sysname LSW3 interface gigabitethernet 1/0/1
[LSW1-sep-segment1] preempt delay 15
[LSW1-sep-segment1] quit
[LSW1] sep segment 2
[LSW1-sep-segment2] block port sysname LSW2 interface gigabitethernet 1/0/1
[LSW1-sep-segment2] preempt delay 15
[LSW1-sep-segment2] quit
NOTE
l In this configuration example, an interface fault needs to be simulated and then rectified to implement
delayed preemption. To ensure that delayed preemption takes effect on the two SEP segments, simulate
an interface fault in the two SEP segment. For example:
l In SEP segment 1, run the shutdown command on GE 1/0/1 of LSW2 to simulate an interface
fault. Then, run the undo shutdown command on GE 1/0/1 to simulate interface fault recovery.
l In SEP segment 2, run the shutdown command on GE 1/0/1 of LSW3 to simulate an interface
fault. Then, run the undo shutdown command on GE 1/0/1 to simulate interface fault recovery.
Step 5 Configure the Layer 2 forwarding function on CE1, CE2, and LSW1 to LSW4.
Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet 10 SEP Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
565
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