Why can't I create VLAN in global config mode on some switches?

adam1995

Why can't I create VLANs in global config mode on some switches? I find in Packet Tracer I can create VLANs in global config mode but on GNS3 and my Catalyst 3500 switch at home I have to use the VLAN database command. Does anyone know why?

d4nz1g

Could you post a show ver?

Vlan database is the only option for creating vlans on CatOS and old IOS versions

adam1995

I am trying to use a router as a switch on GNS3, should I be able to create a VLAN in global config mode with any of the following:

c3600
c3725
c7200

Here is a show ver from gns3:

R1#show ver
Cisco IOS Software, 7200 Software (C7200-JK9S-M), Version 12.4(13b), RELEASE SOFTWARE (fc3)
Technical Support: Support and Documentation - Cisco Systems
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Wed 25-Apr-07 03:18 by prod_rel_team

ROM: ROMMON Emulation Microcode
BOOTLDR: 7200 Software (C7200-JK9S-M), Version 12.4(13b), RELEASE SOFTWARE (fc3)

R1 uptime is 2 minutes
System returned to ROM by unknown reload cause - suspect boot_data[BOOT_COUNT] 0x0, BOOT_COUNT 0, BOOTDATA 19
System image file is "tftp://255.255.255.255/unknown"


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.
--More--
*Oct 2 13:42:57.463: %SYS-5-CONFIG_I: Configured from console by console

A summary of U.S. laws governing Cisco cryptographic products may be found at:
Export Compliance Product Report Application

If you require further assistance please contact us by sending email to
export@cisco.com.

Cisco 7206VXR (NPE400) processor (revision A) with 491520K/32768K bytes of memory.
Processor board ID 4279256517
R7000 CPU at 150MHz, Implementation 39, Rev 2.1, 256KB L2 Cache
6 slot VXR midplane, Version 2.1

Last reset from power-on

PCI bus mb0_mb1 (Slots 0, 1, 3 and 5) has a capacity of 600 bandwidth points.
Current configuration on bus mb0_mb1 has a total of 200 bandwidth points.
This configuration is within the PCI bus capacity and is supported.

PCI bus mb2 (Slots 2, 4, 6) has a capacity of 600 bandwidth points.
Current configuration on bus mb2 has a total of 0 bandwidth points
This configuration is within the PCI bus capacity and is supported.

Please refer to the following document "Cisco 7200 Series Port Adaptor
Hardware Configuration Guidelines" on Cisco.com <http://www.cisco.com&gt;
for c7200 bandwidth points oversubscription and usage guidelines.


1 FastEthernet interface
509K bytes of NVRAM.

8192K bytes of Flash internal SIMM (Sector size 256K).
Configuration register is 0x2102

networker050184

Unfortunately that's the way it is on the routers with the switch module.

adam1995

I get the same thing on my Cisco Catalyst 3500 switch at my house though...?

kenrin

Isn't that running IOS 12.0 or something? too old of a switch. Thats why all the recommended switches will be using 12.4 or higher.

adam1995

Yes, looks like my switch at home is using 12.0, is this version of ios to old to create a vlan in global config mode?

TWX

Yes, it is too old. It'll also default to ISL trunking instead of 802.1q trunking, and will give you only vague error messages when it does so, and it only supports one SVI at a time so in-production one has to physically visit when migrating a site from one IP/VLAN scheme to another...