VTP Pruning best practices
jscimeca715
Member Posts: 280
in CCNA & CCENT
On an access switch is it better to assign your VLAN ports first then enable VTP? Or does VTP pruning adapt to changes in the VLAN port configuration?
For example, I have three VLAN's (2,3,4) on SW1 but only use VLAN 3 and 4 for my access ports. If switch 2 floods a VLAN2 broadcast it will be pruned correct? What if I choose at a later time to add a port to VLAN2 on SW1? Does VTP pruning then stop for VLAN2 on that link?
I appreciate any and all help!
For example, I have three VLAN's (2,3,4) on SW1 but only use VLAN 3 and 4 for my access ports. If switch 2 floods a VLAN2 broadcast it will be pruned correct? What if I choose at a later time to add a port to VLAN2 on SW1? Does VTP pruning then stop for VLAN2 on that link?
I appreciate any and all help!
Comments
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kryolla
Member Posts: 785
Yes you are correct. If a switch does not have traffic for that vlan either locally or is a transit for that vlan that it will tell the other switch to not send traffic to it.Studying for CCIE and drinking Home Brew -
Bert McGert
Member Posts: 122
If you set up pruning on the switches, it'll monitor which vlans are active or not on the downstream switch.
If the switch doesn't have any active ports for vlan X, it'll prune off that vlan. When you configure ports for vlan X on that switch, vtp will pick up on that and send broadcasts through. -
jscimeca715
Member Posts: 280
Excellent, thank you guys. VTP Pruning is a difficult thing to wrap my head around but I'm understanding it better now.