topic Re: Routing between VLAN with IP Routing turned off in Switches, Hubs, and Modems

Routing between VLAN with IP Routing turned off

Torsten Zimmermann — Tue, 20 Mar 2007 10:21:57 GMT

Hello everybody !

I'm using a procurve 2650.
I've configured 2 Vlans and IP Routing is turned off because i want to specify my own routes !

but when i try to execute

ip route dest/netmask gateway

i'm getting this message : can not be switch and gateway at the same time...

what is going wrong here ??

Re: Routing between VLAN with IP Routing turned off

Mohieddin Kharnoub — Tue, 20 Mar 2007 10:37:07 GMT

Hi

Check the destination/mask and gateway, it shouldn;t be in the same range of the IP addresses you configured on the switch.

Good Luck !!!

Re: Routing between VLAN with IP Routing turned off

Carsten M — Wed, 21 Mar 2007 04:13:05 GMT

HI!
Routing is off as you writes. Thus you can rconfigure also no routes.
Which you to make can are the configuration of a default gateway to the next router. That is easily possible over the menu.

Greets
Carsten

Re: Routing between VLAN with IP Routing turned off

Matt Hobbs — Wed, 21 Mar 2007 06:17:38 GMT

As Carsten suggests, you need to enable 'ip routing' first. After which you can then use 'ip route' to specify your own routes.

Re: Routing between VLAN with IP Routing turned off

Torsten Zimmermann — Wed, 21 Mar 2007 07:02:34 GMT

But i don't want the router to route between every vlan ... when i turn ip routing on , that is possible

Re: Routing between VLAN with IP Routing turned off

Torsten Zimmermann — Wed, 21 Mar 2007 10:41:34 GMT

so finally i ended up this way :

ip routing is off , i've configured 2 vlans ... but also built up an old pc with debian and one network card....

i installed the vlan package on this "router" and i've configured iptables ... now everything works fine .. you're able to ping between vlans but you can't do anything more ....
until i allow it ...

thanks for your suggestions

Re: Routing between VLAN with IP Routing turned off

Shane_33 — Fri, 13 Apr 2007 19:39:53 GMT

Torsten,

The 26xx series of ProCurve switches support static routes only (no RIP or OSPF), so as I understand it the ip route command doesn't automatically turn routing on between all VLAN's - you have to setup your routes manually.

What you need to do is possible with static routes in the switch, just enable the ip routing then setup your own routes.

An external PC running as a router between these VLAN's is just a bottleneck you don't need.

Regards,
Shane.

Re: Routing between VLAN with IP Routing turned off

Paulen — Sun, 29 Apr 2007 00:55:19 GMT

Just another thing: you can't route between VLANs unless you have defined an IP address in the VLANs you want to be able to route between. To exclude the management IP from the route table, use the "management-vlan" statement.

And yes, you are able to route between subnets on the same switch without setting up any static routes.