Change VTP server Switch

Answered Question
Jun 23rd, 2008

Hi, I have to replace the switch that is the vtp server and install a new one.

the question is should I have to add to the newtwork the new one first and configure it as client and promote to server after the old has been disconnected?

What are the steps to avoid network outage?

Regards and thanks

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Correct Answer by Edison Ortiz about 8 years 5 months ago

Jon explained the steps on the VTP procedure very clearly, however I can't assure you there won't be a small glitch in the network when making these switch changes.

The glitch may not be related to VTP on itself but on the Spanning-Tree. When you are adding/removing switches in your network Spanning-Tree may recalculate its path. This recalculation may stop switches from forwarding packets hence the 'glitch'.

I recommend performing this change during non-business hours.

HTH,

__

Edison.

Correct Answer by Jon Marshall about 8 years 5 months ago

Hernan

If you only have one VTP server at present.

1) On the new switch, before connecting it to the network make it VTP transparent, then make it a vtp client with the domain name you are using + a password if needed.

2) Connect to the network, ensure it has received the vlan database from the server, promote to a server and then remove your existing server.

Note 1) is to ensure the revision number of the new switch is set to 0. You need to ensure this or you could accidentally overwrite your vlans in your network.

You can have more than VTP server in your switch network so you can promote the new switch before you remove the old one.

There should be no downtime.

Jon

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Correct Answer
Jon Marshall Mon, 06/23/2008 - 12:10

Hernan

If you only have one VTP server at present.

1) On the new switch, before connecting it to the network make it VTP transparent, then make it a vtp client with the domain name you are using + a password if needed.

2) Connect to the network, ensure it has received the vlan database from the server, promote to a server and then remove your existing server.

Note 1) is to ensure the revision number of the new switch is set to 0. You need to ensure this or you could accidentally overwrite your vlans in your network.

You can have more than VTP server in your switch network so you can promote the new switch before you remove the old one.

There should be no downtime.

Jon

Correct Answer
Edison Ortiz Mon, 06/23/2008 - 12:28

Jon explained the steps on the VTP procedure very clearly, however I can't assure you there won't be a small glitch in the network when making these switch changes.

The glitch may not be related to VTP on itself but on the Spanning-Tree. When you are adding/removing switches in your network Spanning-Tree may recalculate its path. This recalculation may stop switches from forwarding packets hence the 'glitch'.

I recommend performing this change during non-business hours.

HTH,

__

Edison.

Jon Marshall Mon, 06/23/2008 - 12:30

Edison

Very good point. I was only thinking of VTP and not the fact that STP could kick in.

Thanks

Jon

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