Re: [mpls-linux-general] Wifi-MPLS

[Adrian P. <adr...@gm...>]

Hello Rachid,

As far as I see in your test bed, only the links 9.0.0.0 and 12.0.0.0 are
wireless links. BS as far as I see are just plain access-points (with no
MPLS support). If what I understand is correct, MPLS will be running betwee=
n
E1/E2/E3. On the wireless links you'll have plain IP packets.

With this test bed you can test performance on the wireless links (without
MPLS) and performance on the MPLS wired links. If this is what you want,
ok... You don't have to modify much.

If you want to use MPLS over the wireless links, you need to use MPLS on
your laptops, and in this case you can test MPLS performance over wireless
(hint: this performance will be less than plain IP over wireless because of
the increased overhead).

To use the wireless interfaces, you need to install the correct wireless
dirvers in linux (if the interfaces don't work out of the box). After the
drivers are loaded, you will have usable interfaces. You need to connect th=
e
interfaces to a wireless access point (set the SSID) by using the iwconfig
(wireless-tools package) command. After that the interface behaves like a
regular interface (there's nothing special in the mpls configuration).

Here's an example:
   E1# iwconfig eth1 essid "MY_AP_SSID"

You can find out the SSID by using iwlist eth1 scanning.

You can set the ip address with ifconfig, like a normal ethernet interface.

After you configure the interfaces you can use for reference the experiment=
s
involving QoS in my lab documentation.

Please note that because of poor drivers I was unable to make the wireless
interface work at a rate higher than 1Mbps (which was enough for pings, but
not enough for video experiments). You need to make sure the wireless
interfaces work as expected. If you need to install additional wireless
drivers, have a look here:
http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/ and here:
http://sourceforge.net/projects/madwifi


Good luck!
Adrian Popa


On 8/10/07, rachid zahraoui <rza...@gm...> wrote:
>
> Hi
>
> I have an experiment of WIFI-MPLS interconnection; I want study the QoS o=
f
> wireless by using MPLS technology; so I realise a manipulation by using 3
> machines with fedora 4 in order to play the role of routers; so I install
> the kernel of MPLS in the three machines. (You can see the joined documen=
t
> )
>
>
>
> I want to define some Cos in my network MPLS. After I want to check
> measures (packet lost, delay, flow=85).
>
>
>
> So I want to use your * MPLS-Linux labs*
>
> I think that I have to change some commands in the scripts
>
> What I have to change exactly in order to realise my experiment??
>
>
>
>
>
> 1000 thanks for your Help
>
>
>
>
>
> Best regards
>
>