I enabled multicasting on my Cisco LAN switches (4500 Sup 4s) to allow Norton Ghost images to multicast across the network. I used pim-sparse-dense mode. The CPUs on the Sup4 almost 100% and I had to shut down Ghost multicasting. The Ghost desktop image is about 40 Gigs in size. Is this image too big for multicasting? Has anyone ever seen this problem with multicasting? Should I just use pim-sparse mode instead?
That depends, is the multicast routing only between vlans? Dense mode is a push and prune where multicast stream is pushed and the routers basically send prune by those who does not want the mcast. Dense mode basically is the opposite, where routers running multicast have to join and that's how the stream gets forwarded, this is a nutshell, of course.
What you need to get is show proc cpu when the cpu is high, to make see which process is causing the cpu to shoot up. Next, make sure that you have igmp snooping enabled on all the switches, who knows, it might be getting flooded. More information is needed
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...