Error %IGMP-3-QUERY_INT_MISMATCH: Received a non-matching query interval 125, from querier address 192.168.1.5

[woter1832]

Hi,

On my C897VAW router, I keep seeing the following error in the syslog:

%IGMP-3-QUERY_INT_MISMATCH: Received a non-matching query interval 125, from querier address 10.10.40.5

I've tried to fathom what it means, but its meaning is really beyond me. I know what device has the IP address 10.10.40.5, but it's powered off and I've tried everything I can think of to make sure there is nothing that happens to have the same IP address, which may be on.

Assuming there is nothing powered on with the IP 10.10.40.5, what is the reason I keep seeing the error message in the syslog? (The router has been rebooted, after turning off the device on 10.10.40.5).

Thanks,

W.

[Georg Pauwen]

Hello,

weird indeed, as IGMP is a multicast protocol which you would need to actively configure. What is the output of ;'show ip igmp interface' ?

You can probably get rid of the syslog message by configuring 'ip igmp query-interval 125' on your VLAN interface...

[woter1832]

Hi Georg,

Thanks for your reply. Contents of show ip igmp interface:

C897VAW#sh ip igmp interface
Vlan40 is up, line protocol is up
  Internet address is 10.10.40.1/27
  IGMP is enabled on interface
  Current IGMP host version is 2
  Current IGMP router version is 2
  IGMP query interval is 60 seconds
  IGMP configured query interval is 60 seconds
  IGMP querier timeout is 120 seconds
  IGMP configured 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: 1 joins, 0 leaves
  Multicast routing is enabled on interface
  Multicast TTL threshold is 0
  Multicast designated router (DR) is 10.10.40.1 (this system)
  IGMP querying router is 10.10.40.1 (this system)
  No multicast groups joined by this system
Vlan55 is up, line protocol is up
  Internet address is 10.10.55.1/28
  IGMP is enabled on interface
  Current IGMP host version is 2
  Current IGMP router version is 2
  IGMP query interval is 60 seconds
  IGMP configured query interval is 60 seconds
  IGMP querier timeout is 120 seconds
  IGMP configured 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: 2 joins, 0 leaves
  Multicast routing is enabled on interface
  Multicast TTL threshold is 0
  Multicast designated router (DR) is 10.10.55.1 (this system)
  IGMP querying router is 10.10.55.1 (this system)
  Multicast groups joined by this system (number of users):
      224.0.1.40(1)
Vlan60 is up, line protocol is up
  Internet address is 10.10.60.1/24
  IGMP is enabled on interface
  Current IGMP host version is 2
  Current IGMP router version is 2
  IGMP query interval is 60 seconds
  IGMP configured query interval is 60 seconds
  IGMP querier timeout is 120 seconds
  IGMP configured 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: 3 joins, 0 leaves
  Multicast routing is enabled on interface
  Multicast TTL threshold is 0
  Multicast designated router (DR) is 10.10.60.1 (this system)
  IGMP querying router is 10.10.60.1 (this system)
  No multicast groups joined by this system
C897VAW#

Thanks,

W.

[Georg Pauwen · Accepted solution]

Hello,

do you need to have IGMP enabled ? Or are there applications on your network using multicast ? If you don't want to disable it altogether, check if you can enable version 3...(ip igmp verson 3 is I think the global command)...

[woter1832]

Annoyingly I can't recall my I turned IGMP on. Maybe to do with PXE or trying to get a multimedia (audio video) device to work, designed for domestic routers.

The version option is under the vlan interfaces. I've removed it with:

no ip pim sparse-dense-mode

and "show ip igmp interfaces" is now empty.

Thanks W.

[Georg Pauwen]

So the error message is gone ?

[woter1832]

Yes. It's been 2 hours now and no sign of the error.

Thank you for your help.

W.