
Task 5.2 AutoRP Listener
Would it be safe to say as a rule of thumb to place the "ip pim autorp listener" command on when you have configured "ip pim sparse-mode" on your interfaces and your using AutoRP vs Using "ip pim sparse-dense-mode" on the interfaces and statically configuring the RP on the routers/switch without using the "ip pim autorp listener?
I guess I'm trying to distinguish when to use this command. Any input would be greatly appreciated.
I guess I'm trying to distinguish when to use this command. Any input would be greatly appreciated.
Comments
Rack25R4#sh ip pim rp mapp
PIM Group-to-RP Mappings
Group(s) 225.0.0.0/8
RP 150.25.2.2 (?), v2v1
Info source: 150.25.8.8 (?), elected via Auto-RP
Uptime: 00:00:48, expires: 00:02:12
Group(s) 239.0.0.0/8
RP 150.25.5.5 (?), v2v1
Info source: 150.25.8.8 (?), elected via Auto-RP
Uptime: 00:01:00, expires: 00:02:07
Rack25R4#
Rack25R4#
My question is why this happened since I did not add the ip pim autorp command and all the interfaces were configured with ip pim sparse-mode
where 141.1.0.8 is SW2's IP on ethernet segment between R2 and R5.
why SG says that 'ip pim autorp listner' should be configured on all mcast-aware devices ? for me it works fine - to simply enable it on R2 to provide R3 with RP-to-group mapping, R4 knows via somehow way as I mentioned earlier.