Interface Blocking
Mode
Description
Specify a blocked
interface based on the
device and interface
names.
This mode applies to a small-scale network.
After fault recovery, a specified interface is blocked based on the
device and interface names. A network planner needs to be
familiar with the names of devices and interfaces in the entire
SEP segment and ensures that each device name is unique.
Perform the following operations on the device where the primary edge interface or no-neighbor
primary edge interface is located:
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
sep segment segment-id
A SEP segment is created and the view of the SEP segment is displayed.
Step 3 Run:
block port { optimal | middle | hop hop-id | sysname sysname interface { interface-
type interface-number | interface-name } }
An interface blocking mode is set.
By default, one of the interfaces at two ends of the link that is set up last or recovers from a fault
last is blocked.
----End
Follow-up Procedure
If the interface with the highest priority is specified to block, run the sep segment segment-id
priority priority command in the view of the interface to be blocked to increase its priority.
When a fault is rectified, the specified interface is blocked.
The default priority of an interface added to a SEP segment is 64. The priority value of an
interface is an integer that ranges from 1 to 128. A larger priority value indicates a higher priority.
8.5.2.2 Configuring the Preemption Mode
Context
After the interface blocking mode is specified, whether a specified interface will be blocked is
determined by the preemption mode. Table 8-12 lists the preemption modes.
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.
307
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