Huawei Quidway S7700 Configuration Manual - Ethernet page 546

Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet
Step 2 Configure the Layer 2 forwarding function on CE1 and LSW1 to LSW5.
For details about the configuration, see the configuration files.
Step 3 Verify the configuration.
l Run the shutdown command on GE1/0/1 of LSW3 to simulate a port fault, and then run the
----End
Configuration Files
l
l
Issue 01 (2011-07-15)
NOTE
l You must set the preemption delay when delayed preemption is adopted because there is no
default delay time.
l After all the faulty ports recover, the edge ports no longer receive fault notification packets. If
the primary edge port does not receive any fault notification packet, it starts the delay timer.
When the delay timer expires, nodes in the SEP segment start blocked port preemption.
To implement delayed preemption in this example, you need to simulate a port fault and then
rectify the fault. For example:
Run the shutdown command on GE1/0/2 of LSW2 to simulate a port fault, and then run the
undo shutdown command on GE1/0/2 to rectify the fault.
display sep interface command on LSW3 to check whether GE1/0/2 of LSW3 has switched
from the Discarding state to the Forwarding state.
<LSW3> display sep interface gigabitethernet 1/0/2
SEP segment 1
----------------------------------------------------------------
Interface Port Role
----------------------------------------------------------------
GE1/0/2 common
Configuration file of LSW1
#
sysname LSW1
#
vlan batch 10 100 200
#
sep segment 1
control-vlan 10
block port optimal
preempt delay 30
protected-instance 0 to 48
#
interface GigabitEthernet1/0/1
port hybrid tagged vlan 10 100
stp disable
sep segment 1 edge primary
#
interface GigabitEthernet1/0/2
port hybrid pvid vlan 200
port hybrid tagged vlan 100
port hybrid untagged vlan 200
#
interface GigabitEthernet1/0/3
port hybrid tagged vlan 10 100 200
stp disable
sep segment 1 edge secondary
#
return
Configuration file of LSW2
#
sysname LSW2
#
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Neighbor Status Port Status
up forwarding
10 SEP Configuration
529