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Re: How to configure linux box as vlan based switch

I feel thats true.

I want the linux machine to behave as switch. forwarding the frames at layer2 across two ports. but with filtering and forwarding based on VLAN id.

THe reply posted here stats how to enable VLAN tagging and IP forowarding but how to enable L2 switching on linux machine.

Thank you

On 1/3/07, Guillermo Garron <guillermo fedora gmail com> wrote:
On 1/3/07, Jeffrey Ross <jeff bubble org> wrote:
> Manoj Kumar wrote:
> > Hello Everyone,
> >
> > Wish you all a very happy new year.
> >
> > I'am trying to test a VLAN based network. Hence, i wanted to know if it
> > possible to configure a Linux Machine with multiple NIC card (i.e.,
> > ports)
> > to be configured to behave as a switch. If it possible then how to do the
> > same any know resource where i coudl get some material on the same.
> >
> > Secondly, if it possible to configure it as a switch then is it
> > possible to
> > configure as VLAN based switch. And also know resources for the same.
> >
> > Thank you,
> > regards,
> > manoj
> >
> VLANs? you want to do Dot1Q? and use multiple virtual interfaces (ie
> eth0.2 eth0.3 etc)?  If so look at vconfig.  Then just assigned
> different ip addresses (and network numbers) to each physical (or
> virtual) nic.
> Also you will need to enable IP forwarding as I believe it is off by
> default, issue the command:
> *echo 1 > /proc/sys/net/ipv4/ip_forward
but that isn't going to work as a router and not as a Switch?, it will
worked based on IPs and the
route table of the linux box. Right?
a Switch worked based on MAC addresses, and a VLAN switch even more.
as the 802.1Q works on Eth Header, so on MAC address (Layer two).

Correct me if I am wrong please.

Guillermo Garron
"Linux IS user friendly... It's just selective about who its friends are."
(Using FC6, CentOS4.4 and Ubuntu 6.06)

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