[Xorp-users] Cand-RP is ignored

Pavlin Radoslavov pavlin at icir.org
Wed May 24 11:40:06 PDT 2006


> > If you configured a Cand-RP using the Bootstrap mechanism, make sure
> > that this information is propagated properly to the rest of the
> > routers.
> 
> My Xorp is DR in the network where the groups are generated.
> I use bootstrap's Cand-RP. Using this configuration the other Xorp users
> here (a few hops away) managed to configure their own Cand-RP for their
> groups, but here it does not work anymore.
> As already set I see no indication that anything is being propagated at
> all.
> 
> > show pim rps
> 
> Everything but mine. As soon as another Xorp creates a Cand-RP it
> appears here, though. The list of RPs is identical to the list a few
> months ago, but without my Xorp.
> 
> > show pim bootstrap
> 
> Seems to be correct:
> Active zones:
> BSR             Pri LocalAddress    Pri State           Timeout SZTimeout
> 188.1.42.50       0 0.0.0.0           0 AcceptPreferred     103 1273
> Expiring zones:
> BSR             Pri LocalAddress    Pri State           Timeout SZTimeout
> Configured zones:
> BSR             Pri LocalAddress    Pri State           Timeout SZTimeout
> 0.0.0.0           0 0.0.0.0           0 Init                 -1 -1
> 
> This is BSR I know.
> 
> > show pim bootstrap rps
> 
> Oh. Did not know that..
> 
> My Cand-RP appears in "Configured RPs":
> Configured RPs:
> RP              Pri Timeout GroupPrefix        BSR CandRpAdvTimeout
> 137.226.119.114   0      -1 239.254.16.0/24    0.0.0.0 22

OK, this looks fine (modulo the fact that your RP is not in the
received Cand-RP set).

> Is it this packet?
> 09:06:18.553773 IP (tos 0xc0, ttl   1, id 0, offset 0, flags [DF], proto: PIM (103), length: 58, options ( RA (148) len 4 )) fw.halifax.RWTH-Aachen.DE > PIM-ROUTERS.MCAST.NET: PIMv2, length: 34
>         Hello
>           Hold Time Option (1), length: 2, Value: 1m45s
>             0x0000:  0069
>           LAN Prune Delay Option (2), length: 4, Value: 
>             T-bit=0, LAN delay 500ms, Override interval 2500ms
>             0x0000:  01f4 09c4
>           DR Priority Option (19), length: 4, Value: 1
>             0x0000:  0000 0001
>           Generation ID Option (20), length: 4, Value: 0x75e88d51
>             0x0000:  75e8 8d51
>         0x0000:  46c0 003a 0000 4000 0167 0237 89e2 7772  F..:.. at ..g.7..wr
>         0x0010:  e000 000d 9404 0000 2000 d06b 0001 0002  ...........k....
>         0x0020:  0069 0002 0004 01f4 09c4 0013 0004 0000  .i..............
>         0x0030:  0001 0014 0004 75e8 8d51                 ......u..Q
> 
> I do not see any reaction to that.

This is the PIM Hello packet, so it is not related to the Bootstrap
problem you have.

I will reply separately to your other emails.

Pavlin



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