05-01-2008 08:11 AM - last edited on 03-25-2019 04:00 PM by ciscomoderator
I have muticast enabled between the two sites and (i think) after I implement an ACL for OSPF routes has blocked the multicast as well. When I do
show ip igmp group serial 0/0
IGMP Connected Group Membership
Group Address Interface Uptime Expires Last Reporter
224.0.1.40 Serial0/0 5d03h stopped 0.0.0.0
What does that stop mean? Do I need to allow multicast address range in my ACL, if so what range, my ACL look like this right now.
access-list 19 permit 10.0.0.0 0.0.255.255
access-list 19 permit 10.1.0.0 0.0.255.255
access-list 19 permit 10.18.80.0 0.0.7.0
access-list 19 permit 10.18.104.0 0.0.7.0
access-list 19 permit 10.65.9.0 0.0.0.255
Solved! Go to Solution.
05-01-2008 08:25 AM
224.0.1.40 is Auto-RP discovery.
your ACL has an implicit deny blocking this group,and I guess all other Multicast groups u need to have flowing.
if u are using auto RP, u need to allow 224.0.1.39 , 224.0.1.40 as well the multicast addresses u need to forward in your net.
The key point here, is that you have an implicit block after ur permit statements.
HTH
Sam
05-01-2008 08:25 AM
224.0.1.40 is Auto-RP discovery.
your ACL has an implicit deny blocking this group,and I guess all other Multicast groups u need to have flowing.
if u are using auto RP, u need to allow 224.0.1.39 , 224.0.1.40 as well the multicast addresses u need to forward in your net.
The key point here, is that you have an implicit block after ur permit statements.
HTH
Sam
05-01-2008 12:45 PM
Thanks. I removed implicit deny and everthing statred to work
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