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Andy11983
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 routing between VLANS
Cisco, DataCenter, Networking, Routers, Tech support
Hi, im new to routing and was wondering if somebody can help me please. We have 2 vlans (A and B) VLAN A has an ip address of 192.x.6.x and VLAN B 192.x.10.x.(VLAN B has external ip of 195.x.x.x) There is a server on VLAN B - that i need to be made available to VLAN A. We have a cisco 2500 router. Can somebody help me please - as its new to me. Thanks andy

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ASKED: February 22, 2005  1:57 PM
UPDATED: February 24, 2005  2:53 AM
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I find your description of vlan B a little confusing with two ranges specified. Regardless, does your router have connections with valid addresses on both vlans? Are your clients configured to point to the router port on thier net as the default gateway? Are the netmasks correct for all systems? If so, and the clients can resolve the name of the server into its IP then you shouldn't have a problem.
Last Wiki Answer Submitted:  February 22, 2005  2:58 pm  by  Astronomer   0 pts.
All Answer Wiki Contributors:  Astronomer   0 pts.
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I agree that your question sounds like you are tackling more than one problem at a time. Use a phased approach by getting the basics down.

Do a search on cisco.com…Here is one article
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/rel_5_2/layer3/routing.htm

BigBadDen
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I have to concur with astronomer that your description is confusing. A VLAN can only have one IP address or range of addresses. You should have three VLANs in this scenario. One WAN VLAN and two internal VLANs. Make sure that routing is enabled on all of the VLANs.

Larrythethird
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I agree with the messages other have submitted. There may be more than one way to resolve this issue.

A way would be to have 2 configurable switches each connected to each other (switch1 and switch2, where switch2 – vlanB hangs off of switch1-vlanA). The switches work with their own ip scheme determined by the vlan. Then have switch1 connect to the router. Use the gateway info from the router for both switches.

I may be missing some details here but, this is workable, particularly if you are using Cisco switches.

Stretched
 0 pts.
 

Hi thanks for all of your help.

Unfortunatly we aren’t using cisco switches we’re using hp procurve switches.

Just to cofirm VLAN A has an ip nat range(195.x.x.1 – 195.x.x.127) and VLAN B has an ip nat range (195.x.x.129 +).

Hope this helps a little bit more

thanks for all your help

andy

Andy11983
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