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VLAN Questions

jkloza
Level 1
Level 1

Hello everyone,

I'm working on re-designing an existing network topology, and am trying to do it the "Cisco recommeneded" way. I have alot of Cisco expierence in the way of VoIP, and some routing & switching knowledge, but I want to make sure before trying to implement this solution, that I at least ask some of the experts.

We currently have 2 separate networks, a 192.168.1.0, and a 10.1.1.0, both which are class C subnets.

Most of our user PC's, and almost all servers are housed on the 192.168 network. The most major thing that is on the 10.1 network is our email server, and a static DNS server, and also a few un-migrated user PC's.

All ports are currently assigned to the default VLAN 1. What is the best way to go about setting up VLANs on this network? I plan on creating a VLAN192, and a VLAN10, and assigning all necessary ports to the correct VLANs. In the near future there will also be 1 or 2 more VLAN's created for VoIP).

What is needed to correctly route traffic between each VLAN? Right now we have a Cisco4506 L3 switch, in which I can set up routing (IP routing command/static routes/EIGRP??). All edge/access switches on the network connect back to the 4506, and then on the "other side" of the 4506 we have a PIX Firewall, and then the "public internet".

Also, to throw another question in, I plan on subnetting down the 10.1 network, but again, I'm assuming that I can easily set up static routing in the L3 4506, or even use a routing protocol that supports VLSM's, such as EIGRP.

What problems might I run into? There are currently 2 DHCP servers in place, one for each network, so I don't think that will be a problem, but again I could be wrong.

Any help is always greatly appreciated!

Thanks!

17 Replies 17

Okay, hope it goes well, thanks for the ratings and any problems let us know.

Jon

Thanks much, implementing the VLAN's went well, got both created the L3 SVI interfaces, and all ports assigned to the correct VLAN's. Everything seems to be working well.

One more question, we have 2 hubs on our network (soon to be replaced w/ switches) :(..

One of the hubs has PC's that are connected to both networks connected to it (the 192.168, and the 10.1), is there any way for me to let it pass traffic for both VLAN's, or should i just replace it with a switch ASAP.

Thanks -

Jon

Glad to hear it's going well.

As for the hub as far as i know they do not support 802.1q ie. trunking so no. The port the hub connects into would have to be allocated to one of your vlans.

So either use it for just one of the vlans or swap out when you can.

Jon