07-23-2010 02:49 AM - edited 03-06-2019 12:10 PM
Hi,
We connected new VPLS L2 lines (whereas before we linked our site up with a L3 MPLS connections) for our sites to our datacentre (redundant 6500 switches).
Each site is in a separate vlan and the VPLS connections are connected on a single port as a trunk.
I've configured new VLANs and vlan interfaces with vrrp, but I see a lot af vrrp multicast traffic sent to the sites.
Is there a way to configure vrrp to only send its advertisements on a specific interface or to block vrrp on an interface?
Solved! Go to Solution.
07-23-2010 04:25 AM
Multicast has a tendancy to end up where you don't want it do - it does not do any harm, unless there is a device wanting to listen.
If you want to block vrrp multicast on a router the specific address is 224.0.0.18
A simple acl like:-
access-list 101 deny ip 224.0.0.18 any
access-list 101 deny ip any 224.0.0.18
access-list 101 permit ip any any
!
interface <
ip access-group 101 out
Should do the trick...
For a switch - much easier, just use:-
interface <
switchport block multicast
HTH>
07-23-2010 04:25 AM
Multicast has a tendancy to end up where you don't want it do - it does not do any harm, unless there is a device wanting to listen.
If you want to block vrrp multicast on a router the specific address is 224.0.0.18
A simple acl like:-
access-list 101 deny ip 224.0.0.18 any
access-list 101 deny ip any 224.0.0.18
access-list 101 permit ip any any
!
interface <
ip access-group 101 out
Should do the trick...
For a switch - much easier, just use:-
interface <
switchport block multicast
HTH>
07-23-2010 04:58 AM
Thx, Andrew
Worked like a charm.
07-23-2010 05:20 AM
np - glad to help
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