I have a query on which statement is true in the
"IP Addresses and Services Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 7.11.x"
https://www.cisco.com/c/en/us/td/docs/iosxr/ncs5xx/ipaddress/711x/b-ip-addresses-cg-711x-ncs540/implementing-hsrp.html#concept_ukj_p2c_gvb
regarding using hsrp group id's >255.
The Expanded Group Number Range with HSRP Version 2 section
says
it is supported in versions post 7.8.1 :-
"You can now use the group number range from 0 to 4095 for HSRP version 2.
...
It allows to interoperate with other routers that support this group number range."
But in section
"Configuring a Primary Virtual IPv4 Address"
the documentation says the restriction from earlier versions are still in place :-
The same restriction is also noted in
"Configuring a Secondary Virtual IPv4 Address"
and
"Configuring an HSRP Session Name"
Which is true ?
I have a customer environment where incumbent ASR1k's have hsrp groups > 255.
I tried to implemement this on 7.7.2 (which according to the table was not supported) and saw a new hsrp group in 'show hsrp brief' with id 3 as well as the >255 group id.
HSRP peer relationships did not form, and group 3 became HSRP Active with an unknown group address.
Interface Grp Pri P State Active addr Standby addr Group addr
BE1.992 3 100 Init 192.168.10.178 unknown unknown
BE1.992 292 69 Init unknownunknown 192.168.10.180
Will it be supported on 7.11.x ??
