[c-nsp] VLAN 1005 Translation?

[Peter Rathlev]

On Mon, 2008-05-26 at 16:40 +0800, Daniel Hooper wrote:
> Can you change the type of vlan? On my 3550's 1005 is showing as trnet,
> are you able to change it to enet?

The type of VLAN 1005 doesn't seem to be changeable, at least not on
C6k/Sup720:

R1(config)#vlan 1005
R1(config-vlan)#media ethernet
Default VLAN 1005 may not have its type changed.
R1(config-vlan)#

VLAN mapping seems to be configurable though, but I don't know if it
works:

R1(config)#vlan mapping dot1q 1005 isl 200
R1(config)#do show run | incl ^vlan mapping
vlan mapping dot1q 1005 isl 200
R1(config)#

I don't have anything that can use VLAN 1005. When I add VLAN 1005 to a
trunk it doesn't create an STP instance:

R1(config)#interface GigabitEthernet4/3
R1(config-if)#switchport trunk allowed vlan add 1005
R1(config-if)#^Z
R1#show run interface GigabitEthernet4/3
Building configuration...

Current configuration : 308 bytes
!
interface GigabitEthernet4/3
 switchport
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1005
 switchport mode trunk
 switchport nonegotiate
 switchport vlan mapping enable
 no ip address
end

R1#show interface GigabitEthernet4/3 status

Port    Name       Status       Vlan       Duplex  Speed Type
Gi4/3              connected    trunk      full    1000  1000BaseLH
R1#show spanning-tree vlan 1005

Spanning tree instance(s) for vlan 1005 does not exist.

R1#

> Just out of interest, is their a way to achieve VLAN mapping on the
> 3550 platform?

IOS 12.2(25)SEE2 on 3550 can't do it, neither can IOS 12.2(35)SE5 on
3750. So I think none of the "small" L3-switches can.

Regards,
Peter