From: John Mistichelli (jmistichelli@yahoo.com)
Date: Fri Sep 27 2002 - 09:46:38 GMT-3
Hi,
Default behavior:
- All vlans will be carried on the trunk.
- All vlans with exception of the defaults can be
removed from the trunk.
- All vlans will be prune eligible except the default
vlans.
If you want to remove vlans from the trunk you will
want to use the command "switchport trunk allowed vlan
remove 2,5-1000"
Hope that helps.
John
7536
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--- "Raj Thava[IPC_Head Office]" <traj@ipcc.ca> wrote:
> Hi
>
> I have configured a trunk on Cat3550 and enable
> pruning on that interface,
> by default all VLan's are in prunning and I am
> allowing
> VLan 3 & 4 through the trunk so on the pruning
> enabled list I have to leave
> only these two Vlan's or I have to remove only these
> two vlan's.
>
> Here is the show int output
>
> Switch#show interfaces fast 0/16 switchport
> Name: Fa0/16
> Switchport: Enabled
> Administrative Mode: trunk
> Operational Mode: down
> Administrative Trunking Encapsulation: isl
> Negotiation of Trunking: Off
> Access Mode VLAN: 1 (default)
> Trunking Native Mode VLAN: 1 (default)
> Trunking VLANs Enabled: 1,3,4,1002-1005
> Pruning VLANs Enabled: 2-1001
>
> Protected: false
> Unknown unicast blocked: disabled
> Unknown multicast blocked: disabled
This archive was generated by hypermail 2.1.4 : Mon Oct 07 2002 - 07:44:05 GMT-3