03-11-2018 07:29 AM - edited 03-05-2019 10:04 AM
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.
Solved! Go to Solution.
03-11-2018 11:16 AM
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)...
03-11-2018 08:49 AM
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...
03-11-2018 10:16 AM - edited 03-11-2018 01:09 PM
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.
03-11-2018 11:16 AM
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)...
03-11-2018 11:34 AM - edited 03-11-2018 01:07 PM
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.
03-11-2018 11:37 AM
So the error message is gone ?
03-11-2018 01:06 PM
Yes. It's been 2 hours now and no sign of the error.
Thank you for your help.
W.
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