01-20-2010 01:28 AM - edited 03-06-2019 09:22 AM
Hi,
we have a typical VTP v2 server-client structure.
Server--->Client (6509-->2960)
Now we are going to replace the 6509 with a VSS but this replacement cannot be made at once so both 6509 and VSS must co-exist for a while in the network.
Now my question: what is the best practice to migrate the VTP Server from the Catalyst 65009 to the VTP Server on the VSS?
Thank you.
Solved! Go to Solution.
01-20-2010 01:54 AM
Hello,
I do not see any radical problems here. It is allowed to have multiple VTP Server switches in a network.
After setting up the VSS while having it still disconnected from your network, make sure that the VTP domain name and the VTP password (if used) are set up properly on the VSS. Also make sure that the VTP revision number as displayed in the show vtp status is lower than the VTP revision number in your network. Ideally, the VTP revision number on the VSS shall be set to 0 which can be done by setting the VSS to the VTP Transparent mode and back to VTP Server.
You now may set the VSS to the VTP Server mode and connect it via a trunk to your 6509. After the link comes up, the VSS will download the current VTP database. At your convenience, you may then remove the 6509.
Best regards,
Peter
01-20-2010 05:54 AM
Hi
Thanks for reply
As per the your network topology we can connect the switches
Before that Pl check the new core switch settings
Config rev number (0) default value new switches (the value should not be the higher then existing switch)
VTP Server
VTP mode
VTP password ( if you have )
You can verify the following command
show vtp status
configure the new switch
VTP mode : server
VTP domain : your existing (domain check the old switch )
VTP password ( same form old sw )
Establish Trunk connnection to new switch
This will download existing L2 VLANS and VTP info.
Later stage you can remove old 6509 take the config and put it into new switch.
regards
krishna kumar
01-20-2010 01:54 AM
Hello,
I do not see any radical problems here. It is allowed to have multiple VTP Server switches in a network.
After setting up the VSS while having it still disconnected from your network, make sure that the VTP domain name and the VTP password (if used) are set up properly on the VSS. Also make sure that the VTP revision number as displayed in the show vtp status is lower than the VTP revision number in your network. Ideally, the VTP revision number on the VSS shall be set to 0 which can be done by setting the VSS to the VTP Transparent mode and back to VTP Server.
You now may set the VSS to the VTP Server mode and connect it via a trunk to your 6509. After the link comes up, the VSS will download the current VTP database. At your convenience, you may then remove the 6509.
Best regards,
Peter
01-20-2010 02:04 AM
Hi Peter,
thank you very much for your answer. I have a question though: if both VTP Server are active in the network on which one do i configure new vlans so they propagete throughout the network?
regards, Chris
01-20-2010 02:07 AM
Hello Chris,
You can use either one to make changes to the VLAN database. As long as there is a continuous sequence of trunks throughout the topology, changes to VLAN database made on any VTP server are propagated over the entire VTP domain.
Best regards,
Peter
01-20-2010 02:01 AM
Hi
I need some clarification
1 . you are going to introduce new 2 6500 VSS sup engine installed switches in the network ?
2 . This Switch will act as core/dist later stages ?
3 The existing switch 6509 is installed with HSRP ?
regards
krishna
01-20-2010 02:09 AM
Hi krishna,
thats right, at the moment we have one 6509 with 2 SUP-720 Engines as Core Layer in our network. This single chassie is going to be replaced with 2 6509-V (VSS) Switches in the core layer.
To your question 3: no, we do not have any redundand links to the distribution layer. This is what we are trying to achieve whith the new vss,
Regards,
Chris
01-20-2010 05:31 AM
Hi
Let me brief my understandings
Scenario: 1
=======
1. The current core switch (6509) is running with 2 sup engines single core switch
Core ( single )
|
|
Access
|
|
Users
Scenario: 2
========
2, Two numbers of vss sup engines new core switches going to install .
Core ----------------Core (physical)
|
Core (Logical )
|
|
Access
|
|
Users
From scenario 1 to migrate scenario 2
1. Take backup of existing configurations form old switch , Install the new vss switches and configure the new switches with the help of backup
regards
krishna kumar
01-20-2010 05:38 AM
Hello krishna,
yes thats right BUT we have to use the old 6509 AND the VSS simultanous for a while
Core ----------------Core (physical)
|
Core (Logical ) -------trunk------------- (old) Core
| |
| |
Access Access
| |
| |
Users Users
Future:
Core ----------------Core (physical)
|
Core (Logical )
|
|
Access
|
|
Users
01-20-2010 05:54 AM
Hi
Thanks for reply
As per the your network topology we can connect the switches
Before that Pl check the new core switch settings
Config rev number (0) default value new switches (the value should not be the higher then existing switch)
VTP Server
VTP mode
VTP password ( if you have )
You can verify the following command
show vtp status
configure the new switch
VTP mode : server
VTP domain : your existing (domain check the old switch )
VTP password ( same form old sw )
Establish Trunk connnection to new switch
This will download existing L2 VLANS and VTP info.
Later stage you can remove old 6509 take the config and put it into new switch.
regards
krishna kumar
01-20-2010 06:06 AM
Thank you all for valuable information. thumbs-up
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