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Community Member

Extended Vlans

I am attaching here one of my cisco 3550 "sh ver" and "sh vtp status" kindly let me know does this switch support extended vlan (upto 4094)

Regards

Mahesh

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Blue

Re: Extended Vlans

Hi

You can't configure extended vlans from vlan database config mode.

From config mode

JPR-MPL-COR-SWH-78(config)# vlan 3000

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

Configuring Extended-Range VLANs

When the switch is in VTP transparent mode (VTP disabled), you can create extended-range VLANs (in the range 1006 to 4094 for any switch port commands that allow VLAN IDs). Enter the vlan vlan-id global configuration command to access config-vlan mode and to configure extended-range VLANs. The VLAN database configuration mode (that you access by entering the vlan database privileged EXEC command) does not support the extended range.

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

HTH

Jon

5 REPLIES
Hall of Fame Super Blue

Re: Extended Vlans

Hi

Yes it will as long as you are in VTP transparent mode which you are from your vtp status output.

HTH

Jon

Community Member

Re: Extended Vlans

Ya

but it shows Maximum VLANs supported locally : 1005

How can I go beyond this

Regards

Hall of Fame Super Blue

Re: Extended Vlans

Hi

DTE-RHY-F00-SW1#sh vtp status

VTP Version : 2

Configuration Revision : 0

Maximum VLANs supported locally : 1005

Number of existing VLANs : 9

VTP Operating Mode : Transparent

VTP Domain Name : PPTE-POD

VTP Pruning Mode : Disabled

VTP V2 Mode : Disabled

VTP Traps Generation : Enabled

MD5 digest : 0xDC 0xE4 0x3D 0x04 0x2C 0xFE 0xD2 0xA5

Configuration last modified by 172.16.15.7 at 3-9-93 22:11:57

DTE-RHY-F00-SW1#sh vlan

VLAN Name Status Ports

---- -------------------------------- --------- -------------------------------

1 default active

5 OBM_MST_vlan active

206 WIN-XP-SVR active

251 Rydale_Hse active Fa0/1, Fa0/2, Fa0/3, Fa0/4, Fa0/5, Fa0/6, Fa0/7,

Fa0/10, Fa0/11, Fa0/12, Fa0/13, Fa0/14, Fa0/15,

Fa0/18, Fa0/19, Fa0/20, Fa0/21, Fa0/22

253 Ex_FITZ_SUITE3 active

1002 fddi-default act/unsup

1003 token-ring-default act/unsup

1004 fddinet-default act/unsup

1005 trnet-default act/unsup

3190 test active <------

** Edit - excerpt from 3550 Cisco config doc

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

Supported VLANs

The Catalyst 3550 switch supports 1005 VLANs in VTP client, server, and transparent modes. VLANs are identified with a number from 1 to 4094. VLAN IDs 1002 through 1005 are reserved for Token Ring and FDDI VLANs. VTP only learns normal-range VLANs, with VLAN IDs 1 to 1005; VLAN IDs greater than 1005 are extended-range VLANs and are not stored in the VLAN database. The switch must be in VTP transparent mode when you create VLAN IDs from 1006 to 4094.

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

So "VTP only learns normal-range VLANs". That is why you see the figure 1005 in sh vtp status but the switch will support extended vlans.

**

HTH

Jon

Community Member

Re: Extended Vlans

correct

now see

---------------

JPR-MPL-COR-SWH-78#sh vtp status

VTP Version : 2

Configuration Revision : 0

Maximum VLANs supported locally : 1005

Number of existing VLANs : 26

VTP Operating Mode : Transparent

VTP Domain Name : bharti

VTP Pruning Mode : Disabled

VTP V2 Mode : Disabled

VTP Traps Generation : Disabled

MD5 digest : 0x4F 0xF9 0x6E 0x31 0xFB 0x7B 0x19 0x8C

Configuration last modified by 202.123.39.222 at 0-0-00 00:00:00

JPR-MPL-COR-SWH-78#vla

JPR-MPL-COR-SWH-78#vlan data

JPR-MPL-COR-SWH-78#vlan database

% Warning: It is recommended to configure VLAN from config mode,

as VLAN database mode is being deprecated. Please consult user

documentation for configuring VTP/VLAN in config mode.

JPR-MPL-COR-SWH-78(vlan)#vla

JPR-MPL-COR-SWH-78(vlan)#vlan 3000

^

% Invalid input detected at '^' marker.

Hall of Fame Super Blue

Re: Extended Vlans

Hi

You can't configure extended vlans from vlan database config mode.

From config mode

JPR-MPL-COR-SWH-78(config)# vlan 3000

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

Configuring Extended-Range VLANs

When the switch is in VTP transparent mode (VTP disabled), you can create extended-range VLANs (in the range 1006 to 4094 for any switch port commands that allow VLAN IDs). Enter the vlan vlan-id global configuration command to access config-vlan mode and to configure extended-range VLANs. The VLAN database configuration mode (that you access by entering the vlan database privileged EXEC command) does not support the extended range.

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

HTH

Jon

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