Re: Filter Multicast Traffic on VLAN

From: Maarten Vervoorn <mr.vervoorn_at_gmail.com>
Date: Thu, 29 Jul 2010 16:11:23 +0200

I have done some more investigation and testing. I think I have got the
solution.
I did it with multicast boundary
ip access-l sta M-BOUND
 permit 232.5.5.5
 permit 232.6.6.6
 permit 224.0.1.39
 permit 224.0.1.40
 deny any
int vlan 100
 ip multicast bound M-BOUND
end
SW1 is replying to 232.5.5.5 and 6.6.6.6
and I only receive a reply from R4 to 232.55.55.55

Are there any other options to filter this multicast traffic on this VLAN.
Or is multicast boundary my only option

Kind regards,

Maarten Vervoorn
2010/7/29 Maarten Vervoorn <mr.vervoorn_at_gmail.com>

>
> That will break auto rp. My multicast network still needs to work. SW1
>> loopback need to reply to the other groups. Only not to group 232.55.55.55
>>
>> 2010/7/29 Adrian Brayton <abrayton_at_gmail.com>
>>
>> Just write an ACL to block 224.0.1.39
>>>
>>>
>>> On Jul 29, 2010, at 9:36 AM, Maarten Vervoorn wrote:
>>>
>>> > Hi group,
>>> >
>>> > I was labbing up some multicast stuff. I just received a question to
>>> filter
>>> > multicast traffi of a specific group on a VLAN
>>> >
>>> > Lab setup
>>> > SW1
>>> > |
>>> > ----------------------------vl100
>>> > | |
>>> > R4--SW2 SW3
>>> > | |
>>> > R5 R6
>>> >
>>> > SW1, SW2 and SW3 are connected using a SVI interface VLAN 100
>>> > I use auto rp
>>> > SW1 = mapping agent
>>> > SW2 = RP for 232.5.5.5 and 232.55.55.55
>>> > SW3 = RP for 232.6.6.6
>>> > Loopback of SW1 has joined all the multicast groups above
>>> > R4 has joined multicast group 232.55.55.55
>>> >
>>> > I want to filter out the 232.55.55.55 traffic on vlan 100 so SW1 does
>>> not
>>> > reply to the traffice and R4 does reply to that traffic
>>> > I tried igmp filters, but those are only availeble on access ports
>>> > I triend igmp access-group on all the vlan 100 SVI interface, but SW1
>>> still
>>> > replies
>>> >
>>> > What are my options to filter multicast traffic on a VLAN?
>>> >
>>> > Thanks,
>>> >
>>> > Kind regards,
>>> >
>>> > Maarten Vervoorn
>>> >
>>> >
>>> > Blogs and organic groups at http://www.ccie.net
>>> >
>>> > _______________________________________________________________________
>>> > Subscription information may be found at:
>>> > http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Thu Jul 29 2010 - 16:11:23 ART

This archive was generated by hypermail 2.2.0 : Sun Aug 01 2010 - 19:19:15 ART