2811 "interface vlan" support

[per_2]

I've got a 2811 running c2800nm-adventerprisek9-mz.124-22.T.bin code in my lab and I'm simply trying to create an interface vlan without any sucess.  Here is the relevant output:

Router#show ver

Cisco IOS Software, 2800 Software (C2800NM-ADVENTERPRISEK9-M), Version 12.4(22)T, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2008 by Cisco Systems, Inc.

Compiled Fri 10-Oct-08 00:05 by prod_rel_team

ROM: System Bootstrap, Version 12.3(8r)T7, RELEASE SOFTWARE (fc1)

Router uptime is 1 day, 6 hours, 23 minutes

System returned to ROM by reload at 12:47:18 UTC Mon Jul 4 2011

System image file is "flash:c2800nm-adventerprisek9-mz.124-22.T.bin"

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to

export@cisco.com.

Cisco 2811 (revision 53.51) with 223232K/38912K bytes of memory.

Processor board ID FTX0945A4VT

2 FastEthernet interfaces

1 Serial(sync/async) interface

2 Channelized (E1 or T1)/PRI ports

1 Virtual Private Network (VPN) Module

DRAM configuration is 64 bits wide with parity enabled.

239K bytes of non-volatile configuration memory.

62720K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2102

Router#config t

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

Router(config)#inter

Router(config)#interface vlan146

                          ^

% Invalid input detected at '^' marker.

The ^ above doesnt seem to line up as my router shows it.  On the router it points at the "l" in vlan.  Here is whats available for "interface v"

Router(config)#interface v?

Vif                Virtual-Dot11Radio  Virtual-PPP  Virtual-Template

Virtual-TokenRing  vmi 

It seems I'm missing something obvious.

I've seen other 2811's with interface vlans running Advanced IP Services code, and what I can find about Advanced Enterprise is that it has all Advanced IP Services code plus other features.

Clearly, something is amiss.  I'd appreciate any suggestions.  It feels like a Monday.

[Reza Sharifi · Accepted solution]

This is router and not a switch.  So you can not create a vlan interface.  If you had a switch module installed, then you could create vlan interfaces (SVI).  If you want to configure a router on a stck, then you need to create Sub-interfaces with dot.q tagging.

interface fe0/0.10

ip address

dot.1q

etc

HTH

Reza

[glen.grant]

On normal router interfaces you would have to configure subinterfaces to route multiple subnets across a trunk link to a switch.

[Somasundaram Jayaraman]

let us take a simple network:

pc====vlan 2=======int fa 0/2===2950 switch======int fa 0/0===2811 router

2950 switch configurations would be

conf ter

inter fa 0/2

switchport mode access

switchport access vlan 2

no shut

The uplinks between 2950 and 2811 should be trunk allowing the vlan 2.

configurations on router would be

=================================

conf ter

interface fastethernet 0/0.1===============>creating sub inerface

encapsulation dot 1q 2==============> enabling encapsulation dot 1q for vlan 2

ip address 10.10.10.3 255.255.255.0 ========> this ip would be the gateway for the end devices in vlan 2

no shut

Hope this helps.

-Somu Jayaraman

[smogra]

You are using a 2811 router which doesnt allow you to create SVI 's unless you have a ESM installed with it.

And then you can go ahead and configure the sub-interfaces as explained by Somu.

Sweta

[per_2]

Thanks for the responses, everyone. 

Yea, I've totally overlooked the fact that the ESW is what allows the creation of "interface vlan".  Very important distinction that apparently never sunk in.  Thanks for the education!