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New Member

sub-interface on catalyst 3550

I have to create some sub-interface on the interface GigabitEthernet0/1. And i don't find how to configure the route with all sub -interface

7 REPLIES
Cisco Employee

Re: sub-interface on catalyst 3550

You should be able to do this if you have the EMI image. Can you paste the output of sh ver

New Member

Re: sub-interface on catalyst 3550

My catalyst 3550 support the EMI image, and that my version

#sh ver:

Cisco Internetwork Operating System Software

IOS (tm) C3550 Software (C3550-I5Q3L2-M), Version 12.1(8)EA1c, RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2002 by cisco Systems, Inc.

Compiled Fri 15-Feb-02 10:50 by antonino

Image text-base: 0x00003000, data-base: 0x006675E0

ROM: Bootstrap program is C3550 boot loader

c3550-12t uptime is 1 hour, 12 minutes

System returned to ROM by power-on

System image file is "flash:c3550-i5q3l2-mz.121-8.EA1c/c3550-i5q3l2-mz.121-8.EA1c.bin"

cisco WS-C3550-12T (PowerPC) processor (revision A0) with 65526K/8192K bytes of memory.

Processor board ID FAA0612U0EX

Last reset from warm-reset

Bridging software.

Running Layer2/3 Switching Image

Ethernet-controller 1 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 2 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 3 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 4 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 5 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 6 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 7 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 8 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 9 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 10 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 11 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 12 has 1 Gigabit Ethernet/IEEE 802.3 interface

12 Gigabit Ethernet/IEEE 802.3 interface(s)

The password-recovery mechanism is enabled.

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

Base ethernet MAC Address: 00:09:44:91:10:80

Motherboard assembly number: 73-5527-13

Power supply part number: 34-0967-01

Motherboard serial number: FAA0612010J

Power supply serial number: LIT060300XT

Model revision number: A0

Model number: WS-C3550-12T

System serial number: FAA0612U0EX

Configuration register is 0x10F

New Member

Re: sub-interface on catalyst 3550

Yes I have the EMI image. This is my output of sh ver

#sh ver

Cisco Internetwork Operating System Software

IOS (tm) C3550 Software (C3550-I5Q3L2-M), Version 12.1(8)EA1c, RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2002 by cisco Systems, Inc.

Compiled Fri 15-Feb-02 10:50 by antonino

Image text-base: 0x00003000, data-base: 0x006675E0

ROM: Bootstrap program is C3550 boot loader

c3550-12t uptime is 1 hour, 12 minutes

System returned to ROM by power-on

System image file is "flash:c3550-i5q3l2-mz.121-8.EA1c/c3550-i5q3l2-mz.121-8.EA1c.bin"

cisco WS-C3550-12T (PowerPC) processor (revision A0) with 65526K/8192K bytes of memory.

Processor board ID FAA0612U0EX

Last reset from warm-reset

Bridging software.

Running Layer2/3 Switching Image

Ethernet-controller 1 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 2 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 3 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 4 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 5 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 6 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 7 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 8 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 9 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 10 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 11 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 12 has 1 Gigabit Ethernet/IEEE 802.3 interface

12 Gigabit Ethernet/IEEE 802.3 interface(s)

The password-recovery mechanism is enabled.

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

Base ethernet MAC Address: 00:09:44:91:10:80

Motherboard assembly number: 73-5527-13

Power supply part number: 34-0967-01

Motherboard serial number: FAA0612010J

Power supply serial number: LIT060300XT

Model revision number: A0

Model number: WS-C3550-12T

System serial number: FAA0612U0EX

Configuration register is 0x10F

New Member

Re: sub-interface on catalyst 3550

Yes I have the EMI image.

Cisco Employee

Re: sub-interface on catalyst 3550

Sorry the subinterfaces are not supported on this switch they way you want to configure. Also there is no reason to configure subinterfaces..

If you want to use subinterfaces to trunk and route like the router.. then you need to enable trunking on the port and then create vlan interfaces to route b/w the networks

Here is the URL that might help

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12112cea/3550scg/swint.htm

New Member

Re: sub-interface on catalyst 3550

ok

So the problem is that i have to put 7 @ip on the same interface and i find only th solution wiyh the sub-interface, But the pb with tha solution is that I don't uderstand each sub-interface can comunicate between them.

Cisco Employee

Re: sub-interface on catalyst 3550

Hi,

what do you have on the other end of this device. Do you have any other router or cisco switch.

You can use secondary ip addresss on the same interface if the other end doesn't support the trunking..

Please let me more detail like do you want to implement vlans or and what are you looking to achieve with subinterfacess...

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