Cisco ASR 900 Series Release Notes page 54

New Software Features in Cisco IOS XE Release 3.11S
PIM Accept Register—supports the PIM accept register feature to perform PIM-SM register
•
message filtering at the RP.
For more information see,
http://www.cisco.com/en/US/docs/routers/asr903/software/guide/b_ipmcast_pim_xe_3S_asr903_chapt
er_0110.html
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
4
Chapter
OL-26630-12