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Beginner

multitier layer 3 switching?

I have a network that I am currently working on that is made mostly of Catalyst 3750 switches. I have multiple VLANs for voice, data, management, ect. At the moment it is using layer 2 switching, but due to the multiple tiers of switches in the network I believe that we would benifit from changing it to layer 3.

I have no control of what is on the network, that's for my seniors to decide but I do have control over configurations to some extent. I am using trunk ports at the moment between all of the switches, only one of which is connected to the router, and the rest go to that switch or one connected to it. to enable layer 3 switching and OSPF is this all I have to do?

interface vlan xxx

description management vlan

ip address x.x.x.x x.x.x.x

interface g1/0/48

description interface to access switch

no switchport

ip address x.x.x.x x.x.x.x

add ospf nei statements in switches?

would be greatfull for any input.

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Engager

Re: multitier layer 3 switching?

You have to enable ip routing on the stack:

config# ip routing

You also need to configure an ip address for every vlan requiring routing, same as the mgmt vlan you proposed.

When you have only a single stack, all networks are connected, you only need a default route to your internet router.

config# ip route 0.0.0.0 0.0.0.0 [next-hop-router]

OSPF is not really required in such a small network.

Please give it a try and get back when you have a problem.

regards,

Leo

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