Multicast on a 3560

houstonrob · ‎02-05-2010

I know I've seen 3560's that support multicast routing but mine doesn't recognize the command

(config)#ip mu?
% Unrecognized command

Is there a minimum IOS that I'm supposed to have or anything else that is a prereq to a switch supporting multicast?

#sh ver
Cisco IOS Software, C3560 Software (C3560-IPBASE-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Thu 19-Jul-07 18:15 by nachen
Image text-base: 0x00003000, data-base: 0x01100000

ROM: Bootstrap program is C3560 boot loader
BOOTLDR: C3560 Boot Loader (C3560-HBOOT-M) Version 12.2(25r)SEE4, RELEASE SOFTWARE (fc1)

uptime is 6 weeks, 17 hours, 17 minutes
System returned to ROM by power-on
System image file is "flash:c3560-ipbase-mz.122-35.SE5/c3560-ipbase-mz.122-35.SE5.bin"

johnnylingo · ‎02-05-2010

Does the switch have "ip routing" configured?

All images should support basic L3 operations, including static routes and Multicast. But you'd have to enable L3 first.

houstonrob · ‎02-05-2010

This switch does quite a bit of interVLAN routing, yes L3 is already active

Reza Sharifi · ‎02-05-2010

Hi,

You need ipservices image to do multicast.

HTH

Reza

johnnylingo · ‎02-05-2010

Ah yup - according to Software Advisor, 12.2(35)SE5 requires IP SERVICES to do Multicast.

Howver, with 12.2(25)SEE4, both will.

Reza Sharifi · ‎02-05-2010

Hi,

Sorry, I forget to attach the link in my previous post

http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_35_se/configuration/guide/swmcast.html

To use this feature, the switch must be running the IP services image (formerly known as the enhanced multilayer image [EMI]).

HTH

Reza