3Com 5500G-EI Command Reference Guide - Page 325

RSTP Configuration Commands 329 Example To enable loop protection function in GigabitEthernet1/0/1, enter the following: system-view System View: return to User View with Ctrl+Z. [SW5500]interface GigabitEthernet1/0/1 [SW5500-GigabitEthernet1/0/1]stp loop-protection stp ignored vlan Syntax stp ignored vlan vlan-list undo stp ignored vlan vlan-list View System View Parameter vlan-list: List of VLANs, and vlan-list={ vlan-id [ to vlan-id ] }&. &: Indicates that vlan-id can be specified for 10 times at most. The value of VLAN ID ranges from 1 to 4094. Description Use the stp ignored vlan command to configure a STP-Ignored VLAN. Use the undo stp ignored vlan command to cancel the configuration. By default, no VLAN is considered STP-Ignored when STP is enabled on the Switch. Once a STP-Ignored VLAN is configured, the packets of this VLAN will be forwarded on any Switch port, with no restriction from the calculated STP path. Example To specify VLAN 10 to VLAN 20 as an STP-Ignored VLANs, enter the following: system-view System View: return to User View with Ctrl+Z. [SW5500]stp ignored vlan 10 to 20 To cancel the configuration of VLAN 10 to VLAN 20 as an STP-Ignored VLANs, enter the following: [SW5500]undo stp ignored vlan 10 to 20 stp mcheck Syntax stp mcheck View System View