Huawei AR530 Series - Page 345

l When there is no faulty link on the ring network, SEP can eliminate loops.
l When a link fails on the ring network, SEP can rapidly restore communication between
nodes.
l The topology change notification function must be configured on an edge device in a SEP
segment. This enables an upper-layer network to detect topology changes in a lower-layer
network in time.
After receiving a message indicating the topology change in a lower-layer network, a device on
an upper-layer network sends TC packets to instruct other devices to delete original MAC
addresses and learn new MAC addresses after the topology of the lower-layer network changes.
This ensures uninterrupted traffic forwarding.
Figure 8-17 Networking diagram of a hybrid-ring SEP network
Router1
Router2
Router3
Block Port(SEP)
A
c
c
e
s
s
SEP
Segment1
MSTP
A
g
g
r
e
g
a
t
i
o
n
PE1
PE2
PE4
PE3
No-neighbor Primary Edge Port
No-neighbor Secondary Edge Port
Do not Support SEP
GE7/0/1 GE7/0/1
GE7/0/1
GE7/0/1
GE7/0/1
GE7/0/1
GE7/0/1
GE7/0/2
GE7/0/2
GE7/0/2
GE7/0/2
GE7/0/2
GE7/0/2
GE7/0/3
GE7/0/3 GE7/0/3
GE7/0/2
VLAN100
GE7/0/3
GE7/0/1
Block Port(MSTP)
CE
Configuration Roadmap
The configuration roadmap is as follows:
1. Configure basic SEP functions.
Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Ethernet Switching
8 SEP Configuration
Issue 01 (2014-11-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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