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Cisco 891F, CISCO 892FSP - Multicast bug

Hi all,

probably I discovered a multicast related bug in CISCO routers 891F and 892FSP.

The configuration is very straightforward:

Router A: GE-WAN: 10.0.10.1/24

                  VLAN1(associated to all the ports of the LAN switch): 192.168.201.1/24

 

Router B: GE-WAN: 10.0.10.2/24

                 VLAN1(associated to all the ports of the LAN switch): 192.168.202.1/24

 

On both routers I configured IP ROUTE in order to have routing from Router A Vlan1 to Router B Vlan1 and vice-versa.

On both routers I configured multicast with the command IP MULTICAST-ROUTING

On both router I configured PIM protocol in SPARSE mode (IP PIM RP-ADDRESS 10.0.10.1 in global configuration and IP PIM SPARSE-MODE on both VLAN1 and  GE-WAN).

 

Host A (192.168.201.10/24) is attached on VLAN1(A). Host A is the MULTICAST SENDER

Host B (192.168.202.10/24) is attached on VLAN1(B). Host B is the MULTICAST RECEIVER

 

If Router A is a CISCO 891F or a CISCO 892FSP, Multicast traffic does not pass from Host A to Host B.

If Router A is a CISCO 892 or a CISCO 881, Multicast traffic pass from Host A to Host B.

 

I spent lot of weeks in troubleshooting this issue, also with the help of a CISCO CCIE certified. Our ideas is that there is a bug.

Do you have any ideas?

I tried to call a cisco expert but as I does not have a Service Contract it is impossible to be helped from CISCO :-(

 

Thank's in advance.

 

Erasmo

 

 

 

 

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