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Block unknown IGMP querier

ashflshtshfum
Level 1
Level 1

Hi,

there is a host in my network who acts as a querier in its vlan. i do not want to block the host or all its traffic, but i just want to block his query messages. i tried

ip access-list extended BLOCK_QUERIER
deny igmp any any 11
permit igmp any any
permit ip any any

int g0/1
ip access-group BLOCK_QUERIER in

but with no effect. shouldn't queries be type 11 or are they different in cisco?
the reason i ask is that cisco displays 1-15 when i hit ? after the ACL name and there are message types
higher than 15.

how can i filter queries, but leave everything else intact?
thank you all in advance!

1 Accepted Solution

Accepted Solutions

ashflshtshfum
Level 1
Level 1

i solved it:

ip access-list extended BLOCK_QUERIER
deny igmp any any 1
permit ip any any

 

View solution in original post

1 Reply 1

ashflshtshfum
Level 1
Level 1

i solved it:

ip access-list extended BLOCK_QUERIER
deny igmp any any 1
permit ip any any

 

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