HI All,
I'm sure I'm just missing something basic, but I'm at a complete loss as to
what it is.
Like the subject says, Vol3 Lab 10. Multicast section. I have it up and
working... But it shouldn't be working. My confusion is on R1.
R1#sh ip pim int
Address Interface Ver/ Nbr
Query DR DR
Mode
Count Intvl Prior
163.144.12.1 FastEthernet0/0.12 v2/S 1 30
1 163.144.12.2
163.144.131.1 FastEthernet0/0.131 v2/S 1 30
1 163.144.131.13
163.144.121.1 FastEthernet0/0.121 v2/S 1 30
1 163.144.121.12
(163.144.245.4, 239.14.14.14), 00:03:21/00:00:08, flags:
Incoming interface: Null, RPF nbr 163.144.15.5
Outgoing interface list:
FastEthernet0/0.121, Forward/Sparse, 00:03:22/00:03:06
FastEthernet0/0.131, Forward/Sparse, 00:03:22/00:03:19
R1#sh ip rpf 163.144.245.4
RPF information for ? (163.144.245.4) failed, no route exists
Jan 8 04:32:51.606: IP(0): s=163.144.245.4 (FastEthernet0/0.12)
d=239.14.14.14 (FastEthernet0/0.131) id=127, ttl=253, prot=1, len=100(100),
mforward
The mroute looks off to me... There's no flags and there's no incoming
interface... The RPF neighour is R5 (task disallows multicast enabled on
that link). You can also see the RPF if failing for the multicast source
required to complete the task. Yet, with debug IP mpacket you can see the
mpacket is received, and forwarded, even though it should be failing the
RPF check.
Why the heck is R1 forwarding an mpacket that is failing RPF?
I've managed to get all 7 points since I haven't added any mroutes.... But
I also haven't used MBGP, which is likely what the task was getting at for
the bonus points...
R4#ping 239.14.14.14
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 239.14.14.14, timeout is 2 seconds:
Reply to request 0 from 163.144.43.14, 76 ms
Reply to request 0 from 163.144.43.14, 100 ms
R4#
Jason
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