Thanks Scott for addressing this. I have a follow-up question for the group. Let's say I have the following topology.
SW1 ----- SW2 ----- SW3 ----- SW4 All switches are trunked together, running in vtp transparent mode. VTP pruning is enabled on all switches. All switches have every VLAN in the database, but only SW1 requires VLAN 10 traffic. SW2, SW3, and SW4 are pruning VLAN 10. Then I add a port on SW4 to VLAN 10. Even though all the switches are running in transparent mode, would they stop pruning VLAN 10 so that SW4 could receive the broadcasts for VLAN 10? The reason I ask this is because previous training has led me to believe that VTP transparent mode would cause the switches to ignore and forward VTP message, but it sounds like maybe they do pay attention to some.. TIA, Brian From: Scott Morris [mailto:[EMAIL PROTECTED] Sent: Thursday, April 24, 2008 9:58 PM To: 'Brian Valentine' Subject: RE: [OSL | CCIE_RS] VTP Transparent with Pruning If you set the switch to pruning before you set it to transparent, it will still indeed work. So you could very well prune things. HTH, Scott _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Brian Valentine Sent: Thursday, April 24, 2008 11:14 AM To: [email protected] Subject: Re: [OSL | CCIE_RS] VTP Transparent with Pruning No response yet. Does anyone know the answer this question? Brian From: Brian Valentine [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 23, 2008 2:32 PM To: '[email protected]' Subject: VTP Transparent with Pruning Hi all, I have been wanting to mock this up in the lab for a while to figure it out, but haven't made the time. I got to thinking and decided that perhaps this group could answer the question for me. Lets say you have several switches with trunk links between them. All switches are in the same VTP domain, with same VTP password. One switch is in VTP Server mode. All other switches are in Client mode. We enable VTP pruning on the server. All clients learn to prune - so all the switches have pruning enabled. Then we take all of the switches and set them to transparent mode. At this point, all switches are in transparent and still show VTP Pruning as enabled. Would pruning actually still work or would setting the switches to transparent mode effectively defeat pruning? TIA, Brian
