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How do I get IGMP enable on 6509 port/interface?

jkeeffe
Level 2
Level 2

6509 IOS ver. = 2.2(17a)SX3

The 6509 ports g2/1-12 are in vlan1 and are switch ports. IGMP shows as enabled at the vlan interface but not the port/interface.

interface GigabitEthernet2/1

description link to 49.128 subnet via 1924/B

no ip address

speed 100

duplex full

switchport

switchport mode access

!

!

interface Vlan1

ip address 164.72.49.131 255.255.255.128

ip pim sparse-dense-mode

end

ENGLAB-6513-Native#sh int status

Port Name Status Vlan Duplex Speed Type

Gi2/1 link to 49.128 connected 1 full 100 10/100/1000BaseT

IGMP shows up on the vlan, but not on the interfaces themselves:

ENGLAB-6513-Native#sh ip igmp int vlan1

Vlan1 is up, line protocol is up

Internet address is 164.72.49.131/25

IGMP is enabled on interface

Current IGMP host version is 2

Current IGMP router version is 2

IGMP query interval is 60 seconds

IGMP querier timeout is 120 seconds

IGMP max query response time is 10 seconds

Last member query count is 2

Last member query response interval is 1000 ms

Inbound IGMP access group is not set

IGMP activity: 7 joins, 5 leaves

Multicast routing is enabled on interface

Multicast TTL threshold is 0

Multicast designated router (DR) is 164.72.49.133

IGMP querying router is 164.72.49.129

Multicast groups joined by this system (number of users):

224.0.1.40(1) 224.0.1.39(1)

IGMP snooping is globally enabled

IGMP snooping is enabled on this interface

IGMP snooping fast-leave is disabled and querier is disabled

IGMP snooping explicit-tracking is enabled on this interface

IGMP snooping last member query interval on this interface is 1000 ms

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

ENGLAB-6513-Native#sh ip igmp int g2/1

GigabitEthernet2/1 is up, line protocol is up

Internet protocol processing disabled

IGMP is disabled on interface

Multicast routing is disabled on interface

Multicast TTL threshold is 0

No multicast groups joined by this system

1. How do I enable IGMP at the interface/port level?

1 Accepted Solution

Accepted Solutions

Prashanth Krishnappa
Cisco Employee
Cisco Employee

IGMP snooping is enabled by default on switchports. If it is disabled in your switch you can enable it using global command "ip igmp snooping"

sh ip igmp int g2/1 shows as IGMP disabled because it is a layer 2 port. If it were a routed port and you had an IP address and PIM enabled, you would have seen it as enabled.

View solution in original post

1 Reply 1

Prashanth Krishnappa
Cisco Employee
Cisco Employee

IGMP snooping is enabled by default on switchports. If it is disabled in your switch you can enable it using global command "ip igmp snooping"

sh ip igmp int g2/1 shows as IGMP disabled because it is a layer 2 port. If it were a routed port and you had an IP address and PIM enabled, you would have seen it as enabled.