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Pruning for new VLAN on Switch trunk

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

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Accepted Solutions

Re: Pruning for new VLAN on Switch trunk

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

1 REPLY

Re: Pruning for new VLAN on Switch trunk

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

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