Disabling ''igmp snooping'' in a VLAN (no interface VLAN) on Catalyst 6500
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02-19-2013 10:35 AM - edited 03-07-2019 11:48 AM
Can please some help?
On 4948 or 3560 I can disable igmp snooping in a specific VLAN:
sw4948(config)#no ip igmp snooping vlan ?
<1-1001> Vlan number
<1006-4094> Vlan number
sw4948(config)#no ip igmp snooping vlan 10 ?
explicit-tracking Enable IGMP explicit host tracking
immediate-leave Enable IGMPv2 immediate leave processing
last-member-query-interval Last member query interval
mrouter Configure an L2 port as a multicast router port
static Configure an L2 port as a member of a group
<cr>
BUT, in 6509-E this command is not enabled:
sw6509(config-if)#no ip igmp snooping ?
access-group IGMP group access group
limit IGMP limit
I have just found on my 6509 that I can disable igmp snooping in a SVI interface (Interface VLAN)
sw6509(config)#int vlan 20
sw6509(config-if)#no ip igmp snooping ?
access-group IGMP group access group
fast-leave Enable IGMP fast leave processing
last-member-query-interval Configure IGMP leave query timeout
limit IGMP limit
minimum-version Minimum IGMP version
mrouter Configure an L2 port as a multicast router port
querier Enable IGMP querier processing
report-suppression Force a report suppression
ssm-safe-reporting Enable SSM Safe Reporting
static Configure an L2 port as a member of a group
<cr>
My current 6509-E IOS version is:
System image file is "sup-bootdisk:s72033-advipservicesk9_wan-mz.122-33.SXH8b.bin"
Do I need to upgrade my IOS version?... or how can I disable ''igmp snooping'' per specific VLAN (no Interface VLAN)?
Any help would be apreciated !
Regards
guruiz
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Catalyst 6000
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02-19-2013 02:50 PM
I made a mistake on the copy and paste. Correct info must be as follows:
.
.
BUT, in 6509-E this command is not enabled:
sw6509(config)#no ip igmp snooping ?
cgmp configure CGMP option
l2-entry-limit limit on the l2 entry that can be installed by IGMP snooping
limit Configure IGMP Snooping limits
source-only-learning source-only gce entries
Any ideas?
Thanks,
guruiz
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02-19-2013 03:18 PM
It is not your IOS. The command is only available under the SVI and not just for layer-2 vlan or can be enabled globally.
Here is an example from the SXI release:
HTH
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02-19-2013 05:52 PM
Reza,
Thank you much for your answer.
Just a pair of questions, if you could please give your comments:
So, to disable igmp snooping in some VLANs in the 6509, do I need to disable it globally?
Would it be the only way?
How could "no ip igmp snooping" applied globally impact my 6509 switch?
Thanks,
Kind regards,
guruiz
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02-19-2013 06:39 PM
Hi Guruiz,
So, to disable igmp snooping in some VLANs in the 6509, do I need to disable it globally?
Would it be the only way?
That appears to be the only way. If you have an SVI for the vlan you want to run Multicast in, then simply enable PIM and not worry about IGMP snooping. I think, the reason you don't see this command under the layer-2 vlan is because most of the time the 6500 is used as layer-2/layer-3 and not just layer-2.
How could "no ip igmp snooping" applied globally impact my 6509 switch?
It will impact only the vlans that are running Multicast. In general, ip IGMP snooping is used when you have a flat vlan and no SVI. If you have multiple vlans and are running Multicast between them, then you can just enable PIM.
HTH
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02-19-2013 08:54 PM
Reza,
Fantastic information.
I´m very grateful.
Best regards,
guruiz
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01-07-2014 04:06 AM
Hi Raza,
Just to clarify, What is the impact If I disable IGMP Snooping disabled globally and enable on specific SVI? e.g
Config# no ip igmp snooping
Config# inter vlan 1
Config-if)#ip igmp snooping
And What is the impact If I disable IGMP Snooping Querier globally and enable on specfic SVI?
Config# no ip igmp snooping querier
Config# inter vlan 1
Config-if)#ip igmp snooping querier
Will IGMP snooping & Querier work for specific VLAN only If disabled globally?
Regards,
Anser
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07-17-2015 02:20 PM
You can disable igmp in one vlan with the next command:
config# vlan configuration "#vlan"
no ip igmp snooping
