10.3.1 Establishing the Configuration Task
Before specifying an interface to block, 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
In general, a blocked interface is one of the last two interfaces that complete neighbor negotiation.
In some cases, however, the negotiated blocked interface may not be the one you expect to be
blocked. You specify an interface to block as needed. The designated blocking does not,
however, become effective immediately. A preemption mechanism allows a designated interface
to be blocked instead of a previously blocked interface.
Pre-configuration Tasks
Before specifying an interface to block, complete the following task:
l Configuring Basic SEP Functions
Data Preparation
To specify an interface to block, you need the following data.
No.
Data
1 Interface blocking mode
2 SEP preemption mode
10.3.2 Setting an Interface Blocking Mode
Each interface in a SEP segment may become a blocked interface. You can specify an interface
to block by configuring an interface blocking mode.
Context
In a SEP segment, an interface is blocked to prevent loops.
You can configure an interface blocking mode in order to specify the location of a blocked
interface. Table 10-9 lists interface blocking modes.
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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