I have an Altiris Deployment Server which is connected to a Cisco 3560 switch. The 3560 switch is connected to multiple 2950 and 2960 switches. The clients are connected to the 2950 and 2960 switches.
Because I want to deploy the same image on multiple clients in the same time I need to configure multicast routing. I don't have a router in the network. I'm a little bit confused by the explanation in the many different manuals because they al l uses a router.
Which commands do I need to let it work without a router?
Thanks in advance,
the only possible issue comes from IGMP snooping that is enabled by default on Cisco switches.
When a router is missing in a Vlan where IGMP snooping is active you have two options:
a) you disable igmp snooping for that vlan, multicast traffic will flow out all ports of the vlan that can span on multiple switches (you need to disable on all of them)
on all switches:
no ip igmp snooping vlan M
b) if supported only one device has to act as IGMP snooping querier : that is it has to send periodic IGMP queries so that all switches can build a table that says what users have interest in receiving group G1, what users want to receive group G2 and so on.
C3560 supports it.
int vlan M
ip address x.y.z.k
ip igmp snooping querier x.y.z.k
where M is the vlan of interest, x.y.z.k is an ip address of the IP subnet used in vlan M that the switch will use as source of IGMP queries.
Hope to help