Static entries in mac address table

Unanswered Question
Jun 15th, 2011
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Hello,


If someone can explain me if is there something i'm missing:


I have a Catalyst 2950, a Catalyst 2960 and two PCs (one multicast server and one multicast receiver).


For the first test :


               one Catalyst 2950 and two PCs

    

                             Group multicast= 234.56.78.90     ======> mac multicast = 0100.5e38.4e5a

                              Sender connected to port fast 0/10

                              Receiver connected to port fast 0/8

                              2950 configuration:

                                          default config +

                                        no ip igmp snooping

                                        mac address-table static 0100.5e38.4e5a vlan 1 interface GigabitEthernet0/10 GigabitEthernet0/8


                    With this configuration the multicast traffic is limited to interface 0/8. There is no flooding.


For the second test :


               one Catalyst 2960 and two PCs

    

                             Group multicast= 234.56.78.90     ======> mac multicast = 0100.5e38.4e5a

                              Sender connected to port fast 0/10

                              Receiver connected to port fast 0/8

                              2960 configuration:

                                         default config +

                                        no ip igmp snooping

                                        mac address-table static 0100.5e38.4e5a vlan 1 interface GigabitEthernet0/10 GigabitEthernet0/8


                   Unfortunatly the traffic is flooded to all ports on vlan 1.



If someone can explain me if is there something i'm missing ....


Best regards,

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Yogesh Ramdoss Wed, 06/15/2011 - 19:12
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  • Cisco Employee,

Hello,


I realize that IGMP-Snooping is NOT enabled on 2960 - can you send me the results of "sh plat ip igmp snooping flood" ?


Do you have any SVI up and running for that Vlan ?


Yogesh

YANNICK GUENVER Fri, 06/17/2011 - 00:14
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Hi Yogesh


Please find here the  show platform ip igmp snooping flood command.

We are interested by vlan 100

    


TU-DMZ-01#sh platform ip igmp snooping flood

vlan    l2rcnt  local       hl3mm      system

----    ------  -----       -----      ------

   1       0    enabled    disabled

   2       0    enabled    disabled

   3       0    enabled    disabled

   4       0    enabled    disabled

   5       0    enabled    disabled

100       0    enabled    disabled

101       0    enabled    disabled

102       0    enabled    disabled

103       0    enabled    disabled

104       0    enabled    disabled

105       0    enabled    disabled

TU-DMZ-



For the last question, there is no SVI up or running for the vlan 100.


Best regards,

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