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Webcast-Catalyst9k
New Member

VLANS

What is the deffrent between create VLAN on the core switch & on the Normal Edge switch ?

Both of them in the 2 cases, will be have the Mode as Server .

so, please update me.

3 REPLIES
Hall of Fame Super Blue

Re: VLANS

Any switch can be a vtp server but it is best practice generally to have your core switches serving this function.

What you want to avoid is someone plugging in a switch in vtp server mode with a higher configuration number which would then overwrite all your other vlans within your switch network (other than switches using vtp transparent).

Make you core switches vpt servers and set the other switches to be vtp clients. Or if you want very tight control make your switches vtp transparent.

HTH

Re: VLANS

VLANs can be Layer-2 or Layer-3 VLAN.

If you are creating a VLANs on layer 2 switch, it will be layer 2 VLAN and you can assign IP address to only one VLAN in L2 switch which you can use for management purposes.

If you are creating a VLAN and associating IP with it which is generaly called as SVI (switched virtual interface), then it will be a Layer 3 VLAN and you can create it only in Layer 3 switch.

By default all switches operate in VTP server mode. Basically you can create, delete, modify VLAN in server mode and it will advertise it's VLAN information with all other switches in the same VTP domain configured in VTP server or client mode. There can be multiple VTP servers for redundancy.

hope this helps ...

New Member

Re: VLANS

Assuming they are in the same VTP domain, there is no difference. The VLAN being created will be propgated to all switches residing in the same VTP domain. Also assuming you want to make the VLAN routable, you will need to create an SVI (VLAN L3 interface) on the core switch, again assuming it is L3 capable.

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