Cisco ASR 9000 Series Configuration Manuallines page 462

Configuring MSTAG parameters
Allowed values are from 0 through 65535.
Step 7
max age seconds
Example:
RP/0/RSP0/CPU0:router(config-mstag-if)# max age 20
Sets the maximum age performance parameters for the bridge.
Allowed values for the maximum age time for the bridge in seconds are from 6 through 40.
Step 8 provider-bridge
Example:
RP/0/RSP0/CPU0:router(config-mstag-if)# provider-bridge
Places the current instance of the protocol in 802.1ad mode.
Step 9
bridge-id id
Example:
RP/0/RSP0/CPU0:router(config-mstag-if)# bridge-id 001c.0000.0011
Sets the bridge ID for the current switch.
Step 10 port-id id
Example:
RP/0/RSP0/CPU0:router(config-mstag-if)# port-id 111
Sets the port ID for the current switch.
Step 11
external-cost cost
Example:
RP/0/RSP0/CPU0:router(config-mstag-if)# external-cost 10000
Sets the external path cost on the current port.
Allowed values for port cost are from 1 through 200000000.
Step 12
hello-time seconds
Example:
RP/0/RSP0/CPU0:router(config-mstag-if)# hello-time 1
Sets the port hello time in seconds.
Allowed values are from 1 through 2.
L2VPN and Ethernet Services Configuration Guide for Cisco ASR 9000 Series Routers, IOS XR Release 6.3.x
436
Implementing Multiple Spanning Tree Protocol