Use this command to enable or disable the Loop Protect feature per port and optionally, per SID.
| port-string | Specifies port(s) on which to enable or disable the Loop Protect feature. For a detailed description of possible port-string values, refer to Port String Syntax Used in the CLI in the S-, K-, and 7100 Series Configuration Guide. |
| enable | disable | Enables or disables the feature on the specified port. |
| sid sid | (Optional) Enables or disables the feature for specific Spanning Tree(s). Valid values are 0 - 4094. If not specified, SID 0 is assumed. |
If no SID is specified, SID 0 is assumed.
All command modes.
The Loop Protect feature is disabled by default. See the S-, K-, and 7100 Series Configuration Guide for more information.
Loop Protect takes precedence over per port STP enable/disable (portAdmin). Normally portAdmin disabled would cause a port to go immediately to forwarding. If Loop Protect is enabled, that port should go to listening and remain there.
Note
The Loop Protect enable/disable settings for an MSTI port should match those for the CIST port.This example shows how to enable Loop Protect on ge.2.3:
System(rw)->set spantree lp enable ge.2.3
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