Huawei quidway s7700 - Page 522

Table 10-6 SEP topology changes
SEP Topology
Change
Description
Topology
change caused
by an interface
fault
If an interface on a device in a complete SEP segment becomes faulty, the
topology of the SEP segment changes.
An interface fault can be a link fault or a neighboring interface fault.
Topology
change caused
by a fault being
rectified and the
preemption
function taking
effect
One or more faults occur in the SEP segment. When the last fault is rectified
and the blocked interface is preempted, the topology is considered
changed.
Table 10-7 list the situations in which topology changes are reported.
Table 10-7 SEP topology change notification
SEP
Topology
Change
Notification
Scenario Description Solution
Topology
change
notification
from a lower-
layer network
to an upper-
layer network
Networking where a
SEP network is
connected to an
upper-layer network
running other
features such as
SEP, STP, RRPP
and SmartLink
l If the blocked interface in a
lower-layer SEP network is
manually changed, the topology
of the SEP segment changes.
Because the upper-layer
network cannot detect the
topology change, traffic is
interrupted.
l If an interface in a lower-layer
SEP network becomes faulty,
the topology of the SEP segment
changes but the upper-layer
network cannot detect the
change. As a result, traffic is
interrupted.
Configure
the SEP
topology
change
notification
function.
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.
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