I have a few basic questions about PIM Auto-RP mechanism.
Please correct my understanding about these below :
Question 1 -
A router, when configured with the command 'ip pim send-rp-announce loopback0 scope 16' announces itself as RP on the multicast address 22.214.171.124. And, the Mapping Agent listens to these messages on 126.96.36.199 and sorts them as (RP,Groups) and re-announces them on 188.8.131.52.
Question 2 -
We know that RP is basically a mechanism for the sparse PIM mode wherein the routers get access to the multicast tree by reaching the RP router. If that is the case, then how do the routers actually get to know about the Auto-RP multicast group 184.108.40.206/40, in order for it to reach the actual RP for the actual multicast group it needs to join ?
Does it mean that the groups 220.127.116.11 and 18.104.22.168 always works in Dense mode fashion that it reaches all routers and is not pruned (as all routers need to disseminate the Auto-RP discovery information .. ?
Question 3 -
I am thinking of trying a multicast configuration on the routers using static-groups and join-group commands.. Would you know of some real nice useful links that have sample multicast lab examples ?
A1) Yes thats correct announcement on .39 and discovery on .40
A2) For auto-RP to work sparse-dense mode has to be configured. Announcement and discovery happens in dense fashion and when S,G mapping are available it goes the sparse way.There are workarounds to make it work with sparse only, but its better to skip that when deploying in a live environment.
A3) You may not find anything on a link for Multicast Lab as such, but you can try to setup 5 to 8 routers to have a meaningful experimentation with multicast where you can designate 1 end always as source and 1 end as receiver and then play with the core using sparse, dense and sparse-dense, using single RP, multiple RP's.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.