Hello, I have a little problem with Cisco 3560G and multicast. I have several switches connected between and a single VLAN that handle multicast.
I have tried several configuration and it seems that the switch doesn't filter multicast and give *all* mcast traffic to all ports that are up and running on the VLAN300. Here is extract of the configuration : Current configuration : 4119 bytes ! ! Last configuration change at 11:54:04 EDT Mon Aug 13 2007 ! NVRAM config last updated at 11:52:00 EDT Mon Aug 13 2007 ! version 12.2 no service pad service tcp-keepalives-in service tcp-keepalives-out service timestamps debug datetime msec localtime show-timezone service timestamps log datetime msec localtime show-timezone service password-encryption no service dhcp ! hostname cisco ! no aaa new-model clock timezone EDT -5 clock summer-time EDT recurring system mtu routing 1500 ip subnet-zero no ip source-route ip routing ip domain-name fr.cfm.fr ip name-server 172.16.0.133 ip name-server 172.16.0.134 ! ip multicast-routing distributed ! no file verify auto spanning-tree mode pvst spanning-tree extend system-id ! vlan internal allocation policy ascending vlan dot1q tag native ! interface GigabitEthernet0/7 switchport access vlan 300 switchport mode access switchport nonegotiate spanning-tree portfast ! ! ... ! all interfaces are configured like this... ! interface GigabitEthernet0/20 description To other ciscos... switchport trunk encapsulation dot1q switchport trunk allowed vlan 1,2,300,1002-1005 switchport mode trunk switchport nonegotiate flowcontrol receive on ! interface Vlan1 no ip address shutdown ! interface Vlan2 description VLAN ip address 10.110.100.1 255.255.255.0 no ip redirects ! interface Vlan300 description Back-MCAST ip address 10.200.0.101 255.255.255.128 ip pim sparse-mode ! ip default-gateway 10.1.3.254 ip classless ip route 0.0.0.0 0.0.0.0 10.1.3.254 no ip http server ip http secure-server ! When looking on usage of mcast groups : cisco#sh ip igmp groups IGMP Connected Group Membership Group Address Interface Uptime Expires Last Reporter Group Accounted 239.1.1.1 Vlan300 00:39:19 00:02:36 10.200.0.23 239.255.14.1 Vlan300 00:39:19 00:02:38 10.200.0.36 239.255.14.2 Vlan300 00:39:19 00:02:42 10.200.0.3 239.255.14.3 Vlan300 00:39:19 00:02:36 10.200.0.10 239.255.14.5 Vlan300 00:39:19 00:02:36 10.200.0.22 239.255.14.11 Vlan300 00:39:18 00:02:40 10.200.0.3 239.255.14.12 Vlan300 00:39:17 00:02:40 10.200.0.3 239.255.14.13 Vlan300 00:39:19 00:02:36 10.200.0.25 239.255.13.1 Vlan300 00:39:19 00:02:36 10.200.0.21 239.255.13.2 Vlan300 00:39:18 00:02:38 10.200.0.3 239.255.13.3 Vlan300 00:39:19 00:02:36 10.200.0.28 239.255.13.5 Vlan300 00:39:19 00:02:36 10.200.0.36 239.255.15.21 Vlan300 00:39:19 00:02:42 10.200.0.3 239.255.15.1 Vlan300 00:39:18 00:02:40 10.200.0.27 239.255.15.2 Vlan300 00:39:19 00:02:40 10.200.0.3 239.255.15.3 Vlan300 00:39:18 00:02:37 10.200.0.9 Problem is shown there the ip igmp group is handled by the vlan not by ports (physical ones). Is the any way to make this working correctly on this material ? Thanks, /Xavier _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
