Huawei AR550 Series - AR509 GW-LcM7 Router: Version Mapping and Appearance

Interface
Role
Sub-role Description Deployment Scenario
Edge interface Primary
edge
interface
A SEP segment has only one
primary edge interface,
which is determined by the
configuration and election.
The primary edge interface
initiates blocked interface
preemption, terminates
packets, and sends topology
change notification messages
to other networks.
Open-ring networking
Closed-ring networking
Multi-ring networking
Secondary
edge
interface
A SEP segment has only one
secondary edge interface,
which is determined by the
configuration and election.
The secondary edge interface
terminates packets and sends
topology change notification
messages to other networks.
No-
neighbor
primary
edge
interface
An interface at the edge of a
SEP segment is a no-
neighbor edge interface,
which is determined by the
configuration and election.
The no-neighbor primary
edge interface 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
interconnect Huawei devices
and devices that do not
support SEP.
Hybrid SEP+MSTP ring
networking
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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