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Community Member

6506 as a VTP server with extended vlans

I'd like to make the 6506 to be as a VTP server

I use only internal vlans for my purposes.

But, when I do:

#vtp mode server

Mode change not allowed. VTP VLAN is in use internally.

Features using internal VLANs in 1..1005 range must first be removed.

Also, I check the internal usage:

#show vlan internal usage

VLAN Usage

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

189 GigabitEthernet5/1.189

190 GigabitEthernet5/1.190

1006 online diag vlan0

1007 online diag vlan1

1008 online diag vlan2

1009 online diag vlan3

1010 online diag vlan4

1011 online diag vlan5

1012 PM vlan process (trunk tagging)

1013 Control Plane Protection

1014 GigabitEthernet2/5

1015 vrf_0_vlan0

1016 L3 multicast partial shortcuts for VPN 0

1017 Egress internal vlan

1018 Multicast VPN 0 QOS vlan

1019 IPv6 Multicast Egress multicast

1020 GigabitEthernet1/4

1022 GigabitEthernet5/1

1023 GigabitEthernet1/7

1024 GigabitEthernet5/5

1025 GigabitEthernet5/2

1026 GigabitEthernet1/29

Is it possible to create a VTP server in this situation?

Should I remove all Vlans which are higher than 1005? (and how to do this?)

22 REPLIES

Re: 6506 as a VTP server with extended vlans

Vyacheslav,

VTP does not support extended vlans: 1006- 4096.

If you want to use these vlans - all switches must be put into "transparent" VTP mode.

HTH>

Community Member

Re: 6506 as a VTP server with extended vlans

Yeah I know it.

And I don't want to use extended vlans.

But as I understand they are used for some services, are not they?

Re: 6506 as a VTP server with extended vlans

VLANS 1002 to 1005 are no longer used/supported.

Extended VLANS number from 1006-4096 - so anything from 1 to 999 is considered a normal numbered VLAN.

Extended VLANS are not configured in the VLAN Database area or saved in the vlan.dat file in flash. Extended VLANS are part of the device configuration soted in NVRAM.

HTH>

Community Member

Re: 6506 as a VTP server with extended vlans

Thanks.

But I don't understand where are these VLANS for example:

1014 GigabitEthernet2/5

1020 GigabitEthernet1/4

There are not any lines about them in config files.

Re: 6506 as a VTP server with extended vlans

Those vlans will not be propagated via VTP - so they will have to have been configured manually by someone.

You need to check all your switches to see if any layer 2 ports are actually assigned to those vlans - if not then remove them.

HTH>

Community Member

Re: 6506 as a VTP server with extended vlans

Yeah I know about VTP. And about 1-999 vlans.

I use only 1-999 vlans in my network, so I don't need extended Vlans. Moreover, I did not configure them at all.

So, how to remove extended vlans if there are not any lines about them in config files ?

Re: 6506 as a VTP server with extended vlans

remove them from the config from configuration mode:-

conf t

no vlan xxxx = xxxx is the number you want to remove.

HTH>

Community Member

Re: 6506 as a VTP server with extended vlans

Community Member

Re: 6506 as a VTP server with extended vlans

It does not work.

For example, I do:

show vlan internal usage | in 1026

1026 GigabitEthernet1/29

sh run int g1/29

Building configuration...

Current configuration : 52 bytes

!

interface GigabitEthernet1/29

no ip address

end

Then I do:

(config)#no vlan 1026

Then I check again this vlan:

1026 GigabitEthernet1/29

It exists!!

Maybe there is another way to remove it ?

Re: 6506 as a VTP server with extended vlans

post the output of

show int status | inc 1026

Community Member

Re: 6506 as a VTP server with extended vlans

C6506#show int status | inc 1026

C6506#

Nothing.

Re: 6506 as a VTP server with extended vlans

OK - well that means on the switch you issued the command, no interface either up/up or down/down or admin down/down is configured into vlan 1026.

Post the output of "show vlan"

Community Member

Re: 6506 as a VTP server with extended vlans

Try setting the port in question to layer 2 ("switchport"), the internal vlans are created for L3 ports. This will possibly remove the high numbered internal vlans.

However, if you read the error it is complaining about vlans in the 1-1005 range. I suspect it does not like the sub-interfaces you have. I'd remove the two sub interfaces on that gig port, then go to server mode, then put the sub interfaces back on.

Community Member

Re: 6506 as a VTP server with extended vlans

VLAN Name Status Ports

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

1 default active Gi3/1, Gi3/2

.........................

.........................

800 v800 active

839 v839 active

899 v899 active

1002 fddi-default act/unsup

1003 trcrf-default act/unsup

1004 fddinet-default act/unsup

1005 trbrf-default act/unsup

VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2

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

1 enet 100001 1500 - - - - - 0 0

.........................

.........................

800 enet 100800 1500 - - - - - 0 0

839 enet 100839 1500 - - - - - 0 0

899 enet 100899 1500 - - - - - 0 0

1002 fddi 101002 1500 - - - - - 0 0

1003 trcrf 101003 4472 1005 3276 - - srb 0 0

1004 fdnet 101004 1500 - - - ieee - 0 0

1005 trbrf 101005 4472 - - 15 ibm - 0 0

VLAN AREHops STEHops Backup CRF

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

1003 7 7 off

Remote SPAN VLANs

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

Primary Secondary Type Ports

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

C6506#

That's all.

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