Example For Configuring Sep On A Multi-Ring Network - Huawei Quidway S7700 Configuration Manual - Ethernet

Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet
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10.7.2 Example for Configuring SEP on a Multi-ring Network

In multi-ring networking, multiple rings consisting of Layer 2 switching devices are deployed
at the access layer and aggregation layer. SEP runs at the access layer and aggregation layer to
implement link redundancy.
Networking Requirements
Generally, redundant links are used to connect an Ethernet switching network to an upper-layer
network to provide link backup and enhance network reliability. The use of redundant links,
however, may produce loops, causing broadcast storms and rendering the MAC address table
unstable. As a result, the communication quality deteriorates, and communication services may
even be interrupted. SEP can be deployed on the ring network to block redundant links and
unblock them if a link fault occurs.
As shown in
layer and aggregation layer. In this networking mode:
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Issue 01 (2011-07-15)
vlan batch 10 100 200
#
sep segment 1
control-vlan 10
protected-instance 0 to 48
#
interface GigabitEthernet1/0/1
port hybrid tagged vlan 10 100
stp disable
sep segment 1
#
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
#
return
Configuration file of CE1
#
sysname CE1
#
vlan batch 100
#
interface GigabitEthernet1/0/1
port hybrid tagged vlan 100
#
return
Figure 10-12, multiple Layer 2 switching devices form ring networks at the access
SEP runs at the access layer and aggregation layer. When the ring network is functioning
properly, SEP blocks the redundant Ethernet links. When a link on the ring fails, SEP can
quickly restore communication between the nodes on the ring.
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10 SEP Configuration
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