I am saravanan from Bangalore. In one of my customer has 4503 switch connected with 20 2950 switch. I want to enable the trunking protocol in between the both L3 and L2 switch dedicately. In 2950 Encapsulation dot1q and ISL options are not there, how can be to enable the trunking.
Then another issue, when i enable VTP mode from Transparen to server mode, how much time it will take. After enable the server mode, that L3 switch is hanging (there is no ping ), but when show vtp status and counters. It shows the number of advertisements and revision numbers also.
but it is hanging more than 2 minutes, so rollback in to old mode (transparent). Please tell me how much time it will take.
Thanks in advance
That great Saravanan that suggestions has helped you,It will be helpful if you can mark this thread as answered and rate the post which has helped you.
Please try to go over the following steps:
- At the beginning, have all switches set to the VTP Transparent mode by issuing the command vtp mode transparent in the global configuration mode.
- On all switches, configure the VTP domain name using the vtp domain DOMAINNAME command in the global configuration mode, replacing the DOMAINNAME with your own domain name. The name is case sensitive and must be identical on all switches in the VTP domain.
- On all switches, set up the VTP password using the command vtp password MYPASSWORD in the global configuration mode, again replacing the MYPASSWORD with your own password. The password is also case sensitive and must be idendical on all switches in the VTP domain.
- On all switches, make sure that the VTP Pruning is deactivated and that the same VTP version is running by entering the following two commands: no vtp pruning and vtp version 1 in the global configuration mode.
- Make sure that all necessary VLANs exist on all switches by using the show vlan brief command and optionally creating missing VLANs as needed so that all switches know the necessary VLANs. Note that I want you to make the VLAN database consistent - do not rely on VTP as of yet. Switches should be still configured as VTP Transparent.
- Activate trunks between switches as suggested in my previous post and verify that the connectivity is maintained (leave up to 50 seconds for STP convergence). If you lose connectivity after you activate trunks, make sure that both the 4503 and the 2950 switch are configured for trunking on ports that interconnect these two switches, and also make sure that your PC is connected to an access port that is placed in a proper access VLAN to be able to reach the management address of the 4503 switch. Also make sure that the native VLAN on both switches is the same, preferably, leave it unmodified (i.e. VLAN1).
- After the trunks are set up in such a way that the connectivity is working, configure the 4503 switch as VTP Server using the vtp mode server global configuration command, and all other switches as VTP Clients using the vtp mode client global configuration command. Verify again that the connectivity has not been interrupted.
- Create an experimental VLAN on the 4503 switch (say 999) and exit the configuration mode. Make sure afterwards that the VLAN has also been added to other switches in your VTP domain.
I suppose that this sequence of steps can help you to deploy the VTP successfully in your network but please be careful to follow the individual steps very closely and if there are any unclear or unexpected things, please come back and ask again.