[c-nsp] RES: VLAN internal usage

Peter Rathlev peter at rathlev.dk
Tue Dec 2 19:44:02 EST 2008


Hi,

On Tue, 2008-12-02 at 20:46 -0300, Leonardo Gama Souza wrote:
> So the command 'show platform hardware capacity vlan' should be tracking
> the free internal VLANs, but this is not happening:
> 
> 7609#show platform hardware capacity vlan 
> VLAN Resources
>   VLANs: 4094 total, 68 VTP, 0 extended, 16 internal, 4010 free
> 
> As subinterfaces use "internal VLANs", I am actually using 18 internal
> VLANs here. It seems this command is only tracking the "internal VLANs"
> in the range 1006-4094 (automatically allocated by IOS).
> Am I missing anything?

Interesting; you are quite right: I tried moving a sub-interface between
"encapsulation dot1q 6" and "encapsulation dot1q 3800", and the output
changed:

Switch(config-subif)#int gi4/8.6
Switch(config-subif)#enc dot 6
Switch(config-subif)#do sh pla har cap vl       
VLAN Resources
  VLANs: 4094 total, 130 VTP, 58 extended, 22 internal, 3884 free
Switch(config-subif)#enc dot 3800        
Switch(config-subif)#do sh pla har cap vl
VLAN Resources
  VLANs: 4094 total, 130 VTP, 58 extended, 23 internal, 3883 free
Switch(config-subif)#

So if I use VLAN 6, I have an extra VLAN. I'm scheduling a service
window a.s.a.p.! :-)

(Or more realistically the output from the command is wrong...)

Regards,
Peter




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