Huawei quidway s7700 - Enabling Loop Detection Control on an Interface

Step 2 Run:
loop-detection enable vlan { { vlan-id1 [ to vlan-id2 ] } & <1-10> | all }
Loop detection is enabled in a VLAN.
By default, loop detection is disabled in all VLANs.
NOTE
Currently, loopback detection does not take effect in dynamic VLANs.
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13.2.4 Enabling Loop Detection Control on an Interface
Context
Do as follows on the S7700.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
interface interface-type interface-number
The interface view is displayed.
Step 3 Run:
stp disable
STP is disabled.
Step 4 Run the following commands as required to add the interface to VLANs.
l To add the hybrid interface to VLANs in tagged mode, run port hybrid tagged vlan
{ { vlan-id1 [ to vlan-id2 ] }&<1-10> | all }.
l To add the hybrid interface to VLANs in untagged mode, run port hybrid untagged vlan
{ { vlan-id1 [ to vlan-id2 ] }&<1-10> | all }.
Step 5 Run:
loop-detection mode { port-trap | port-blocking | port-nolearning | port-shutdown }
Loop detection control is enabled on the interface. When a loop is detected on the interface, the
S7700 sets the state of the interface to Trap, Blocking, No learning, or Shutdown.
l Trap: The S7700 sends a trap message but does not perform any operation on the interface.
l Blocking: The interface is blocked and allows only BPDUs to pass through.
l No learning: The interface does not learn MAC addresses of packets.
l Shutdown: The interface is disabled.
By default, an interface turns to the Blocking state when a loop is detected on the interface.
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Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet 13 Loop Detection Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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