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Community Member

multicast on UCS

I have four B250 M2 in one 5108,  only one 6140 FI ,  uplink is a 3750G-24ts switch ,   All B250 install vmware Esxi5,  have one redhat vm on each B250, i have a software use 234.0.100.32 multicast address communication each other ,  I enable multicast routing on 3750g ,  I can see multicast group on 3750G , but my software working very unstable. if i mirge all redhat vm on one b250 , the software work fine .  how can i solve it ? 

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Community Member

Re: multicast on UCS

on the 3750 you can configure an igp querier so the multicast entries won't time out after 3 minutes

       http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_55_se/commmand/reference/cli1.html#wp11899276

Community Member

Re: multicast on UCS

Thanks very much !

I use ip multicast-routing on 3750 already, 

HXUCS-A(nxos)# show ip igmp snooping groups

Type: S - Static, D - Dynamic, R - Router port

Vlan  Group Address      Ver  Type  Port list

294   */*                -    R     Eth1/5

294   234.0.100.32       v2   D     Veth735 Veth759 Veth747

                                    Veth741

HXUCS-A(nxos)# show ip igmp snooping mrouter

G - G-pinned, Q - Query accepting interface

Vlan  Router-port   Type      Uptime      Expires

294   Eth1/5        D         01:32:31    00:04:49

HXUCS-A(nxos)# show ip igmp snooping querier

Vlan  IP Address       Version   Expires     Port

294   194.196.58.50    v2        00:04:16    Ethernet1/5

Multicast routing work unstable ,  my application work unstable too

HXUCS-A(nxos)# show ip igmp snooping event-history vlan

vlan Events for IGMP Snoop process

2012 Aug 10 12:25:17.319751 igmp [4899]: : igmp_cl_output_l2: Before IP api ...

2012 Aug 10 12:25:17.319749 igmp [4899]: : igmp_cl_output_l2: ...

2012 Aug 10 12:25:17.319717 igmp [4899]: : Received MRD Update: router-port: Eth

1/5

2012 Aug 10 12:25:17.319711 igmp [4899]: : Received MRD from Ethernet1/5 source

on intf 1c17.d349.a4c7 with mac 547f.ee50.d0cc

2012 Aug 10 12:24:47.869135 igmp [4899]: : igmp_cl_output_l2: Before IP api ...

2012 Aug 10 12:24:47.869132 igmp [4899]: : igmp_cl_output_l2: ...

2012 Aug 10 12:24:47.869092 igmp [4899]: : Received MRD Update: router-port: Eth

1/5

2012 Aug 10 12:24:47.869087 igmp [4899]: : Received MRD from Ethernet1/5 source

on intf 1c17.d349.a4c7 with mac 547f.ee50.d0cc

2012 Aug 10 12:24:47.115447 igmp [4899]: : Suppressing report for (*,234.0.100.3

2) came on Vethernet747

2012 Aug 10 12:24:47.115439 igmp [4899]: : Updated oif Vethernet747 for (*, 234.

0.100.32) entry

2012 Aug 10 12:24:47.115429 igmp [4899]: : Received v2 report: group 234.0.100.3

2 from 194.196.58.32 on Vethernet747

2012 Aug 10 12:24:47.115412 igmp [4899]: : Process a valid IGMP packet

2012 Aug 10 12:24:46.518649 igmp [4899]: : Received v2 report: group 224.0.1.40

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