Cisco ASR 9000 Series Command Reference Manual page 706

Multilink Commands on the Cisco ASR 9000 Series Router
multilink group
RP/0/RSP0/CPU0:router(config-if)# multilink
RP/0/RSP0/CPU0:router(config-if-multilink)# group 1
(config-if-multilink)# commit
Related Commands
Command Description
multilink, on page 682 Enters the config-if-multilink submode.
Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,
Release 5.3.x
686