Multicast IE lab 2

From: Radu Pavaloiu (Radu.Pavaloiu@connex.ro)
Date: Sun Jan 16 2005 - 12:05:55 GMT-3


After I've putted ip pim nbma-mode on R2 Se 0/0 R3 are stiil receiving
traffic, even if on R2 all things are OK.

 R2#show ip mroute 228.28.28.28
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C -
Connected,
       L - Local, P - Pruned, R - RP-bit set, F - Register flag,
       T - SPT-bit set, J - Join SPT, M - MSDP created entry,
       X - Proxy Join Timer Running, A - Candidate for MSDP
Advertisement,
       U - URD, I - Received Source Specific Host Report, Z - Multicast
Tunnel
       Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags: H - Hardware switched
 Timers: Uptime/Expires
 Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 228.28.28.28), 00:11:39/stopped, RP 150.1.2.2, flags: S
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    Serial0/0:0, 132.1.0.1, Forward/Sparse, 00:06:43/00:02:38

(132.1.6.6, 228.28.28.28), 00:08:44/00:00:59, flags: T
  Incoming interface: FastEthernet0/0, RPF nbr 132.1.26.6 ------>
multicast only to R1
  Outgoing interface list:
    Serial0/0:0, 132.1.0.1, Forward/Sparse, 00:06:43/00:02:38

(132.1.26.6, 228.28.28.28), 00:08:45/00:03:27, flags: T
  Incoming interface: FastEthernet0/0, RPF nbr 0.0.0.0
  Outgoing interface list:
    Serial0/0:0, 132.1.0.1, Forward/Sparse, 00:06:44/00:02:37

But,

R3#
*Mar 2 02:49:15.101: IP(0): s=132.1.26.6 (Serial0/0:0) d=228.28.28.28
id=37, prot=1, len=68(64), mroute olist null
R3#
*Mar 2 02:49:17.101: IP(0): s=132.1.26.6 (Serial0/0:0) d=228.28.28.28
id=38, prot=1, len=68(64), mroute olist null
R3#
*Mar 2 02:49:19.101: IP(0): s=132.1.26.6 (Serial0/0:0) d=228.28.28.28
id=39, prot=1, len=68(64), mroute olist null
R3#
*Mar 2 02:49:21.101: IP(0): s=132.1.26.6 (Serial0/0:0) d=228.28.28.28
id=40, prot=1, len=68(64), mroute olist null

Multicast packets are sended by a rtr on R6. Maybe a bug :( .

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 Radu Pavaloiu If There is no way
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                        radu.pavaloiu@connex.ro
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