3Com 4500-5500 Vlans and Internet

sstrause
sstrause used Ask the Experts™
on
I'm in an environment that approaching 150 + users and we have 3Com 5500G and 45ooG switches.  Up until now the network has been flat with a 10.1.0.0/23 addressing scheme giving us just around 500 addresses.  We created a VLAN 2 at 10.10.10.0 (54 interface address) on one switch to start experimenting with segmentation.  Plan is to start moving some servers to Vlan 2.  The switch is routing between VLANS OK as I undertand the multi layer switches do that when you created the interface ip.  Both VLANS (Vlan 2 and Default VLAN)  seem to ping each other fine.  My Question is this - how do I get the servers and a few XP machines on that VLAN 2 to access the internet?  A static IP route on the switch or do I need to point the machines to mutiple gateways?

Thanks
Sheldon
Comment
Watch Question

Do more with

Expert Office
EXPERT OFFICE® is a registered trademark of EXPERTS EXCHANGE®
Commented:
you will have default gateways for each vlan. for example  10.1.0.1 and 10.10.10.1

your 3com switch is probably configured already with correct route to outside and it'l know where to route internal and external traffic
natting should also come into picture...

Author

Commented:
I tought the same as far as the switch knowing the route to the outside but it doesn't appear to be doing that so I need to look alittle closer at that.

Sheldon
Commented:
you didn't provide much details, so I can only guess that you have a single L3 switch where you created these VLAns. you also probably have a firewall or router where you do NAT. That device that does NAT has to know about that new network (10.10.10.x). If that device can support subinterfaces you have to create one, assign IP from that new network, configure NAT on that interface.

chances are, you also need to convert your ports connecting switch and NAT device to trunk. That will allow all  traffic from all VLANs to pass thru it.

Do more with

Expert Office
Submit tech questions to Ask the Experts™ at any time to receive solutions, advice, and new ideas from leading industry professionals.

Start 7-Day Free Trial