cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
22437
Views
0
Helpful
6
Replies

Extended Vlans

mahesh-gohil
Level 1
Level 1

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

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

View solution in original post

6 Replies 6

Jon Marshall
Hall of Fame
Hall of Fame

Hi

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

HTH

Jon

Ya

but it shows Maximum VLANs supported locally : 1005

How can I go beyond this

Regards

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

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.

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

Hello Jon,

I understood that we can only do the extended VLAN configuration in transparent mode,if we are using vtp version 2.

But is there any specific reason that we cant configure it in Server mode?

Thanks in advance!!!

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Innovations in Cisco Full Stack Observability - A new webinar from Cisco