Huawei quidway s7700 - Configuring Basic SEP Functions; Establishing the Configuration Task

SEP
Topology
Change
Notification
Scenario Description Solution
Networking
scenario where a
host is connected to
a SEP network by
using a SmartLink
group
During an active/standby
switchover of member interfaces in
the SmartLink group, the host sends
a SmartLink Flush packet to notify
the connected devices in the SEP
segment of the switchover.
If the connected devices in the SEP
segment cannot identify the
SmartLink Flush packet (that is, if
these connected devices in the SEP
segment cannot detect any topology
change of the lower-layer network),
traffic will be interrupted.
Enable the
edge devices
in the SEP
segment to
process
SmartLink
Flush
packets.
Topology
change
notification
from an upper-
layer network
to a lower-layer
network
Networking
scenario where a
SEP network is
connected to an
upper-layer network
configured with
CFM.
If a fault occurs on the upper-layer
network, the topology of that
network changes but the lower-
layer network cannot detect the
change. As a result, traffic is
interrupted.
Configure
association
between SEP
and CFM.
10.2 Configuring Basic SEP Functions
When there is no faulty link on a ring network running SEP, SEP can eliminate loops on the
Ethernet. When a link fault occurs on a ring network running SEP, SEP can immediately restore
the communication links between the nodes.
10.2.1 Establishing the Configuration Task
Before configuring basic SEP functions, familiarize yourself with the applicable environment,
complete the pre-configuration tasks, and obtain the required data. This can help you complete
the configuration task quickly and efficiently.
Applicable Environment
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.
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.
506