Re: IP IGMP SNOOPING QUERIER ON A PER VLAN

inshu.inshu · ‎07-13-2010

Hi,

I am using a 4507R cisco switch and I need to enable IP IGMP SNOOPING VLAN 4 QUERIER, which is for my IPTV vlan.

I did try to enable this and get below error. I have an IP address assigned for the vlan 4.

"" Core_AlGosaibi(config)#int vlan 4
Core(config-if)#ip igmp snooping querier
IGMP Querier function cannot be operationally enabled on some VLANs because the required conditions have not been met.""

I see the IGMP version to be 3, will it make any difference?

few are some outputs for your reference, but it doesnt show igmp snooping querier (enabled/disabled) kindly help.

Corei#sh ip igmp snooping vlan 4
Global IGMP Snooping configuration:
-----------------------------------
IGMP snooping              : Enabled
IGMPv3 snooping            : Enabled
Report suppression         : Enabled
TCN solicit query          : Disabled
TCN flood query count      : 2
Last Member Query Interval : 1000

Vlan 4:
--------
IGMP snooping                       : Enabled
IGMPv2 immediate leave              : Disabled
Explicit host tracking              : Enabled
Multicast router learning mode      : pim-dvmrp
Last Member Query Interval          : 1000
CGMP interoperability mode          : IGMP_ONLY

When I globally enabled ip igmp snooping querier and then enter the command " ip igmp snooping vlan 4 querier " it takes.

But again this command is globally enabled, will it make any issues during query with respect to the query IP address??

Please help.

Thanks,

MI

inshu.inshu · ‎07-13-2010

Now I see that the the IGMP snooping querier is enabled for all the vlans since I entered it globally, is there anyway in which I can get it enabled for only IPTV vlan which is my Vlan 4? Please advise.

Also operational state is showing non querier, is it because some problems with configurations?

Core#sh ip igmp snooping querier vlan 4 detail

Global IGMP switch querier status
--------------------------------------------------------
admin state                    : Enabled
admin version                  : 2
source IP address              : 0.0.0.0
query-interval (sec)           : 60
max-response-time (sec)        : 10
querier-timeout (sec)          : 120
tcn query count                : 2
tcn query interval (sec)       : 10

Vlan 4:   IGMP switch querier status
--------------------------------------------------------
admin state                    : Enabled
admin version                  : 2
source IP address              : 10.20.4.1
query-interval (sec)           : 60
max-response-time (sec)        : 10
querier-timeout (sec)          : 120
tcn query count                : 2
tcn query interval (sec)       : 10
operational state              : Non-Querier
operational version            : 2
tcn query pending count        : 0
Corei#sh ip igmp snooping querier vlan 8 detail

Global IGMP switch querier status
--------------------------------------------------------
admin state                    : Enabled
admin version                  : 2
source IP address              : 0.0.0.0
query-interval (sec)           : 60
max-response-time (sec)        : 10
querier-timeout (sec)          : 120
tcn query count                : 2
tcn query interval (sec)       : 10

Vlan 8:   IGMP switch querier status
--------------------------------------------------------
admin state                    : Enabled
admin version                  : 2
source IP address              : 10.20.8.1
query-interval (sec)           : 60
max-response-time (sec)        : 10
querier-timeout (sec)          : 120
tcn query count                : 2
tcn query interval (sec)       : 10
operational state              : Non-Querier
operational version            : 2
tcn query pending count        : 0

Thanks,

MI

idrisoye123 · ‎03-31-2012

Dear inshu.inshu,

How did you eventually solve this issue? Please I need your help on similar issue.

I have a VLAN for IPTV for which i like configure multicast to be restricted only to the IPTV VLAN.

Thanks

idrisoye@yahoo.com

inshu.inshu · ‎04-25-2012

Hi Idris,

Enable igmp querier on core switch and immediate leave on the access switch particular vlan.

Thanks

idrisoye123 · ‎05-02-2012

Inshu,

Many thanks. But I did not understand what you meant in the bold text:

Enable igmp querier on core switch and immediate leave on the access switch particular vlan.

Please explain.

“We should all have the right to free speech and expression of opinions. Wisdom is knowing when, where, and how to use them”

Surya ARBY · ‎09-30-2012

Bump !

Issue still there in the last firmware on sup7; has someone opened a case about this ?

http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/15.1/XE_330SG/configuration/guide/multi.html#wp1163784

The doc is clear :

The IGMP Snooping Querier feature can be enabled either globally or per-VLAN.

but it's wrong ! I'm running

D7402_DC#show version

Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSALK9-M), Version 03.03.01.SG RELEASE SOFTWARE (fc2)Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2012 by Cisco Systems, Inc. Compiled Sun 26-Aug-12 13:45 by prod_rel_team
[...]

System image file is "bootflash:/cat4500e-universalk9.SPA.03.03.01.SG.151-1.SG1.bin"

By default IGMP snooping is Enabled and IGMP snooping querier is disabled :

D7402_DC(config)#ip igmp snooping vlan 4 querier

Command did not take effect due to reason: IGMP switch querier is globally disabled.

So of course I enable it globally; and IGMP snooping querier is applied on all VLANs

D7402_DC(config)#ip igmp snooping querier

D7402_DC#show ip igmp snooping querier

Vlan IP Address IGMP Version Port

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

1 172.22.248.42 v2 Switch

4 10.160.0.5 v2 Switch

8 172.22.248.42 v2 Switch

9 172.22.248.42 v2 Switch

10 172.22.248.42 v2 Switch

11 172.22.248.42 v2 Switch

12 172.22.248.42 v2 Switch

But when I issue

D7402_DC(config)#no ip igmp snooping querier

the command is deleted from the config but IGMP snooping querier is still active on ALL Vlans; of you want to disable IGMP snoopin querier; you have to disable IGMP snooping and then enable it again if you want to keep L2 multicast forwarding logic

D7402_DC(config)#no ip igmp snooping querier

D7402_DC(config)#exit

D7402_DC#show ip igmp snooping querier

Vlan IP Address IGMP Version Port

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

1 172.22.248.42 v2 Router

4 10.160.0.5 v2 Router

8 172.22.248.42 v2 Router

9 172.22.248.42 v2 Router

10 172.22.248.42 v2 Router

11 172.22.248.42 v2 Router

12 172.22.248.42 v2 Router

D7402_DC#conf t

Enter configuration commands, one per line. End with CNTL/Z.

D7402_DC(config)#no ip igmp snooping

D7402_DC(config)#exit

D7402_DC#show ip igmp snooping querier

Vlan IP Address IGMP Version Port

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

D7402_DC#conf t

Enter configuration commands, one per line. End with CNTL/Z.

D7402_DC(config)#ip igmp snooping

D7402_DC(config)#

D7402_DC(config)#exit

D7402_DC#conf tshow ip igmp snooping querier

Vlan IP Address IGMP Version Port

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

D7402_DC#

Ferzan Unlu · ‎03-27-2019

You also need to specify igmp switch querier source address globally.