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Cisco 3550 IP Routing


I am unable to run IP Routing command on my Cisco 3550 switch . Do upgrading of IOS will help me ?



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Re: Cisco 3550 IP Routing

Cisco 3550 is a L3 switch and you should be able to configure IP Routing with its default IOS.

Have you tried typing

ip routing

while in config mode ?

Do you receive an error ?

Please post the SH VER output from this box.


Community Member

Re: Cisco 3550 IP Routing

Hi ,

here is the output

Switch-1#sh ver

Cisco Internetwork Operating System Software

IOS (tm) C3500XL Software (C3500XL-C3H2S-M), Version 12.0(5)WC13, RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2005 by cisco Systems, Inc.

Compiled Tue 20-Sep-05 10:05 by antonino

Image text-base: 0x00003000, data-base: 0x00351FFC

ROM: Bootstrap program is C3500XL boot loader

Switch-1 uptime is 1 minute

System returned to ROM by power-on

System image file is "flash:c3500xl-c3h2s-mz.120-5.WC13.bin"

cisco WS-C3548-XL (PowerPC403) processor (revision 0x01) with 16384K/1024K bytes of memory.

Processor board ID FAA0428Y13Q, with hardware revision 0x00

Last reset from power-on

Processor is running Enterprise Edition Software

Cluster command switch capable

Cluster member switch capable

48 FastEthernet/IEEE 802.3 interface(s)

2 Gigabit Ethernet/IEEE 802.3 interface(s)

32K bytes of flash-simulated non-volatile configuration memory.

Base ethernet MAC Address: 00:02:B9:9C:23:00

Motherboard assembly number: 73-3903-04

Power supply part number: 34-0971-01

Motherboard serial number: FAA04299A9E

Power supply serial number: PAC042800LS

Model revision number: A0

Motherboard revision number: B0

Model number: WS-C3548-XL-EN

System serial number: FAA0428Y13Q

Configuration register is 0xF



Switch-1#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Switch-1(config)#ip routing


% Invalid input detected at '^' marker.

Switch-1(config)#ip r?

radius rcmd




Hall of Fame Super Bronze

Re: Cisco 3550 IP Routing

cisco WS-C3548-XL

That's a 3500 Switch, not a 3550. 3500 is a L2 switch. Not even upgrading the IOS will help you there. You need a L3 switch hardware.

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Re: Cisco 3550 IP Routing

you will need a new IOS image.

a 3550 is not necessarliy L3 capable by default. it may have an image of SMI that does not support IP routing but only switching.

the EMI versions of IOS support full IP routing for the 3550 switches. you will have to upgrade to an EMI version if you're currently not running one. (or a newer SMI version for basic static/unicast ip routing and RIP)

if you can, download the latest 3550 L3 version IOS. (requires a cco account with software maintenance contract):

NOTE: the earlier versions of SMI IOS did not support ip routing.

12.1(11)EA1 SMI and up have basic ip routing support added, ie: static unicast routing and RIP. to use advanced ip routing you will need an EMI version.

see this link for more info on SMI limitation:

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