Pruning for new VLAN on Switch trunk

[Rupesh Kashyap]

HI, I have two  3750 series switches having trunk relationship between them. Few vlans are already opened on trunk as well as they are pruned (switchport trunk allowed vlan 600,601,632,633)

Now, I have created one more new vlan 635. I want to add that vlan into Pruning list. Should I run below command. Please suggest, it should not override any current membership.

"switchport trunk pruning vlan add 635 "

Regards,

Rupesh

[Ganesh Hariharan · Accepted solution]

HI, I have two  3750 series
switches having trunk relationship between them. Few vlans are already
opened on trunk as well as they are pruned (switchport trunk allowed
vlan 600,601,632,633)
Now,
I have created one more new vlan 635. I want to add that vlan into
Pruning list. Should I run below command. Please suggest, it should not
override any current membership.
"switchport trunk pruning vlan add 635 "
Regards,
Rupesh

Hi Rupesh,

Basically By default all the VLANs on the trunk are eligible for pruning. You can remove VLANs from the list of eligible VLANs using these commands. After a VLAN has been removed from the eligible list, it cannot be pruned by VTP. To add the VLANs back, use the command set vtp pruneeligible vlanlist for COS switches or switchport trunk pruning vlan add vlanlist for IOS.

Hope that clear out your query !!

If helpful do rate the valuable post.

Regards

Ganesh.H