Huawei quidway s7700 - Page 511

Interface
roles
Sub-role Description Deployment
Scenario
No-
neighbor
primary
edge port
The interface at the most marginal
edge of a SEP segment is a no-
neighbor primary edge interface, as
shown in Figure 10-2. It is configured
by users.
A no-neighbor primary interface
initiates blocked-interface
preemption, terminates packets, and
sends topology change notification
messages to other networks.
No-neighbor primary edge interfaces
are used to interconnect Huawei
devices and non-Huawei devices or
devices that do not support SEP.
Hybrid SEP
+MSTP ring
networking
No-
neighbor
secondary
edge port
A no-neighbor secondary edge
interface terminates packets and sends
topology change notification
messages to other networks.
No-neighbor secondary edge
interfaces are used to interconnect
non-Huawei devices and devices that
do not support SEP.
l Blocked interface
In a SEP segment, an interface is blocked to prevent loops.
If you do not specify the interface as a blocked interface, any interface in a SEP segment
may be blocked. Only one interface is blocked in a SEP segment that works properly.
l Status of SEP-enabled interfaces
Table 10-3 shows the status of SEP-enabled interfaces in a SEP segment.
Table 10-3 Interface status
Interface
Status
Description
Forwarding An interface in the forwarding state can forward user traffic, and receive
and send SEP packets.
Discarding An interface in the discarding state only receives and sends SEP packets.
The interface status does not depend on the interface role. An interface may be in forwarding
or discarding state regardless of its role.
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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