[Xorp-users] Multicast flooded on one interface and not in other.

[Patricio Latini]

I am experiencing a weird issue. I have on vlan30 the servers with groups
233.0.0.1 and 232.0.0.1. When I join from a host on vlan31 to any of the
groups the flooding works perfect. However when I join from vlan12 or vlan15
to any of that groups the multicast is not flooded, however the interface is
shown as being in that group as in the logs bellow.

 

All the interfaces (vlan12,15,31) have the same configuration.

 

Any idea on how I can troubleshoot why the traffic is not be flooded?

 

Thanks


Patricio

 

 

root at dns> show igmp interface 

Interface    State    Querier         Timeout Version Groups

eth0         DISABLED 0.0.0.0            None       2      0

vlan10       DISABLED 172.16.1.1         None       2      0

vlan11       DISABLED 172.16.1.5         None       2      0

vlan12       UP       172.16.1.9         None       2      6

vlan13       DISABLED 172.16.1.13        None       2      0

vlan14       DISABLED 172.16.1.17        None       2      0

vlan15       UP       172.16.1.21        None       2      7

vlan18       DISABLED 0.0.0.0            None       2      0

vlan19       DISABLED 0.0.0.0            None       2      0

vlan20       DISABLED 172.16.3.1         None       2      0

vlan30       UP       172.16.4.1         None       3      4

vlan31       UP       172.16.5.1         None       2      5

 

 

root at dns> show igmp group 

Interface    Group           Source          LastReported Timeout V State

vlan12       224.0.0.2       0.0.0.0         172.16.1.9        25 2     E

vlan12       224.0.0.5       0.0.0.0         172.16.1.9        22 2     E

vlan12       224.0.0.6       0.0.0.0         172.16.1.9        29 2     E

vlan12       224.0.0.13      0.0.0.0         172.16.1.9        22 2     E

vlan12       224.0.0.22      0.0.0.0         172.16.1.9        21 2     E

vlan12       224.0.0.251     0.0.0.0         172.16.1.9        25 2     E

vlan15       224.0.0.2       0.0.0.0         172.16.1.21       23 2     E

vlan15       224.0.0.5       0.0.0.0         172.16.1.21       28 2     E

vlan15       224.0.0.6       0.0.0.0         172.16.1.21       27 2     E

vlan15       224.0.0.22      0.0.0.0         172.16.1.21       22 2     E

vlan15       224.0.0.251     0.0.0.0         172.16.1.21       27 2     E

vlan15       232.0.0.1       0.0.0.0         172.16.1.22       28 2     E

vlan15       233.0.0.1       0.0.0.0         172.16.1.22       21 2     E

vlan30       224.0.0.2       0.0.0.0         172.16.4.1        24 3     E

vlan30       224.0.0.13      0.0.0.0         172.16.4.1        24 3     E

vlan30       224.0.0.22      0.0.0.0         172.16.4.1        24 3     E

vlan30       224.0.0.251     0.0.0.0         172.16.4.1        24 3     E

vlan31       224.0.0.2       0.0.0.0         172.16.5.1        25 2     E

vlan31       224.0.0.13      0.0.0.0         172.16.5.1        23 2     E

vlan31       224.0.0.22      0.0.0.0         172.16.5.1        25 2     E

vlan31       224.0.0.251     0.0.0.0         172.16.5.1        23 2     E

vlan31       233.0.0.1       0.0.0.0         172.16.5.2        20 2     E

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