switch server mode to transperent mode

[santosh.s.vijapur]

Hi Team,

I need help to undesatnd bleow mentioned points

1) Switch is in server mode having valn 1-5 , if switch get configured to transperent mode  .still switch retains all the vlans ??

2)  SW1 vtp rivision history 5  consist of vlan 1-5, SW2 rivision VTP rivision histroy 3  consist vlan 6 &7.  no VTP domain has been set to both the switches ,

if trunk got established between these two switches , is higher VTP rivision of SW1 overrides at  the seondary switch SW2 and replaces the vlan database from 6&7   to 1-5 at SW2

[Jon Marshall · Accepted solution]

Santosh

1) Yes the switch retains the vlans. It writes them to the running config as well as keeping them in the vlan.dat file

2) If no domain name is set on SW1 then no it will not overwrite SW2. If a VTP domain name is set on SW1 (note doesn't have to be set on SW2) and then connected to SW2 via a trunk link then yes SW2 will have it's vlan database overwritten.

Jon

[santosh.s.vijapur]

Thannks Jon ,

I have two more scenario

1)SW1 is in transperent mode  with rivision history zero consist of vlan 1-5 ,  SW2 in sever mode  rvision history 4 with vlan 5&6&7 .

SW1 and SW2 connected each other with access port  vlan 5 . If  trunk got established  between SW1 and SW2 . is there

a chance of vlan database over write at SW1 since SW1 rivision history is zero . and both switch  VTP domain not configured

2) SW1 in transprent mode with rivision history zero consist of vlan 1-5 , SW2 also in trasperent mode  rvision history 4 with vlan 5&6&7  with no domain name .if trunk got established , is VLAN database overwrites ??

[Jon Marshall · Accepted solution]

1) No because VTP transparent switches do no originate VTP updates and they ignore any VTP updates received. Ignore in the sense they don't update their database but they will pass the VTP advertisement on to other switches.

2) No because of 1)

Jon