IPcelerate is requesting that ip multicasting is enabled before they install their ipcelerate server. When I asked for a sample config, they point me to Cisco's website. We have a 2821 gateway at each site(4 sites connected via a metroE-connection), 3560s and 3548s. They have stated the 3548s will work with an upgrade. Approximately 400 phones. Does anyone have a sample config with multicasting in a ipclerate environment? Thanks in advance for any assistance you may provide.
Multicast in terms of IPCelerate is basic. Its the same way you do Berbee & Cistera. However, it really depends on your current network setup. Typically, on all layer three devices you need "ip multicast-routing" enabled in the global configuration and for interfaces that will need to pass multicast traffic you need to specify "ip pim sparse-dense-mode". This is typically on vlan interfaces or WAN addresses.
For more indept information see the following documentation..
layer 2 devices does not need any extra config to pass multicast. There is however IGMP protocol that works hand in hand with Multicast and it operates on layer 2. But as long as your IOS is fairly up to date then there should be no issue. Try it and see.
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