3650 vs 3750g

[galaga]

Trying to replace 3650 with a 3750 g. I have concerns over the IOS version and multi cast, I am concerned about some of the IOS commands not supported in the 3750.

Trying to understand the differences between 3750g running ios  Cisco IOS Software, C3750 Software (C3750-IPBASEK9-M), Version 12.2(55)SE4, RELEASE SOFTWARE (fc1) 

and 

WS-C3650-24TD running cisco IOS Software, IOS-XE Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 03.03.05SE RELEASE SOFTWARE (fc1)

There are differences with VRF and IP dense mode

Any insight would be helpful.

[johnd2310]

Hi,

You won't be able to do full multicast routing on the 3750G because it is running the ip base image. The ip base image only support stub multicast routing. I don't think the base image supports vrf. You will need to use the ip services image in the 3750 to get support for vrf and full multicast

Thanks

John

[galaga]

How do I determine the full extent of the existing multicast routing ?

vrf is enabled but not sure if it is being utilized?

Not exactly sure what this is doing :

interface GigabitEthernet0/0
vrf forwarding Mgmt-vrf
no ip address
negotiation auto

What does ip pim dense-mode do for voice ?