DETAILED STEPS
Step 1 configure
Example:
RP/0/RSP0/CPU0:router# configure
Enters the Global Configuration mode.
Step 2 spanning-tree mstag protocol instance identifier
Example:
RP/0/RSP0/CPU0:router(config)# spanning-tree mstag a
RP/0/RSP0/CPU0:router(config-mstag)#
Enters the MSTAG configuration submode.
Step 3 preempt delay for interval{ seconds | minutes | hours }
Example:
RP/0/RSP0/CPU0:router(config-mstag)# preempt delay for 10 seconds
Specifies the delay period during which startup BPDUs should be sent, before preempting.
Step 4 interface { Bundle-Ether | GigabitEthernet | TenGigE | FastEthernet } instance.subinterface
Example:
RP/0/RSP0/CPU0:router(config-mstag)# interface GigabitEthernet0/2/0/30.1
RP/0/RSP0/CPU0:router(config-mstag-if)#
Enters the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Step 5 name name
Example:
RP/0/RSP0/CPU0:router(config-mstag-if)# name leo
Sets the name of the MSTP region.
The default value is the MAC address of the switch, formatted as a text string using the hexadecimal representation
specified in IEEE Standard 802.
Step 6 revision revision -number
Example:
RP/0/RSP0/CPU0:router(config-mstag-if)# revision 1
Sets the revision level of the MSTP region.
L2VPN and Ethernet Services Configuration Guide for Cisco ASR 9000 Series Routers, IOS XR Release 6.3.x
435
Implementing Multiple Spanning Tree Protocol
Configuring MSTAG parameters
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