[gentoo-user] configure wlan0 route metric

[gentoo-user] configure wlan0 route metric

[deadeyes]

Hi all,

For my home network I am generally using wireless to get connected to the
network and the internet.

However for copying some large files I use the wire.

That means I get 2 IPs in the same range.
And both interfaces get the same metric : 0.

I found out I can modify the metric for the default route using metric_wlan0.
Code:

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 wlan0
0.0.0.0         192.168.1.1     0.0.0.0         UG    2      0        0 eth0
0.0.0.0         192.168.1.1     0.0.0.0         UG    100    0        0 wlan0

(this is not the full routing table)
However this changes the metric of the default route.
Not of the route that is specifically for the local network.
of course I can do this manually.
However that is alot of hassle and seems to be something that should be
configurable use files.

Does anyone knows how I can accomplish this? Or how I can change the metric for
each route for the wlan0 interface?

Thanks in advance!

Re: [gentoo-user] configure wlan0 route metric

[Kfir Lavi]

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On Wed, Apr 13, 2011 at 12:14 AM, deadeyes <gvm999@gmail.com> wrote:

> Hi all,
>
> For my home network I am generally using wireless to get connected to the
> network and the internet.
>
> However for copying some large files I use the wire.
>
> That means I get 2 IPs in the same range.
> And both interfaces get the same metric : 0.
>
> I found out I can modify the metric for the default route using
> metric_wlan0.
> Code:
>
> Destination     Gateway         Genmask         Flags Metric Ref    Use
> Iface
> 192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0
> eth0
> 192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0
> wlan0
> 0.0.0.0         192.168.1.1     0.0.0.0         UG    2      0        0
> eth0
> 0.0.0.0         192.168.1.1     0.0.0.0         UG    100    0        0
> wlan0
>
> (this is not the full routing table)
> However this changes the metric of the default route.
> Not of the route that is specifically for the local network.
> of course I can do this manually.
> However that is alot of hassle and seems to be something that should be
> configurable use files.
>
> Does anyone knows how I can accomplish this? Or how I can change the metric
> for
> each route for the wlan0 interface?
>
> Thanks in advance!
>
>
> Hi,
you can use net-analyzer/ifmetric.
I found this solution not satisfying, but don't remember why.
I guess some corner cases.

I have bonded the interfaces on my laptop. The bonding driver will prefer
using the wired when
it is connected.
Here is my /etc/conf.d/net:
# eth0
config_eth0=( "null" )

# wlan
modules=( "wpa_supplicant" )
wpa_supplicant_wlan0="-Dwext"
config_wlan0=( "null" )
modules_wlan0=( "!plug" )
ifplugd_wlan0="--api-mode=wlan"

# bond
slaves_bond0="eth0 wlan0"
dhcpcd_bond0="--noipv4ll --nolink -t 15"
config_bond0=( "dhcp" )


Regards,
Kfir

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[gentoo-user] Re: configure wlan0 route metric

[deadeyes]

Kfir Lavi <lavi.kfir <at> gmail.com> writes:

> Hi,you can use net-analyzer/ifmetric.I found this solution not satisfying, but
> don't remember why. I guess some corner cases. I have bonded the interfaces on
> my laptop. The bonding driver will prefer using the wired when
> 
> it is connected. Here is my /etc/conf.d/net:# eth0config_eth0=( "null" )#
> wlanmodules=( "wpa_supplicant" )wpa_supplicant_wlan0="-Dwext"config_wlan0=( 
> "null" )
> 
> modules_wlan0=( "!plug" )ifplugd_wlan0="--api-mode=wlan"#
> bondslaves_bond0="eth0 wlan0"dhcpcd_bond0="--noipv4ll --nolink -t
> 15"config_bond0=( "dhcp" )Regards,Kfir
> 

Thanks for your response!
Bonding doesn't seem a good solution for me.
I can't find documentation on ifmetric.
Do I need ifplugd to call ifmetric? or can I configure this in /etc/conf.d/net?

Re: [gentoo-user] Re: configure wlan0 route metric

[Mick]

On 13 April 2011 11:06, deadeyes <gvm999@gmail.com> wrote:

> Thanks for your response!
> Bonding doesn't seem a good solution for me.
> I can't find documentation on ifmetric.
> Do I need ifplugd to call ifmetric? or can I configure this in /etc/conf.d/net?

You can define the priority in your /etc/conf.d/net

You can set this per wired/wireless interface; e.g.

metric_eth0="100"

Look at your /etc/conf.d/net.example for more details.

HTH.
-- 
Regards,
Mick

[gentoo-user] Re: configure wlan0 route metric

[deadeyes]

Mick <michaelkintzios <at> gmail.com> writes:

>
> You can define the priority in your /etc/conf.d/net
> 
> You can set this per wired/wireless interface; e.g.
> 
> metric_eth0="100"
> 
> Look at your /etc/conf.d/net.example for more details.
> 
> HTH.


No offense, I had found out about this option (and tried it already):
"I found out I can modify the metric for the default route using metric_wlan0."

This however only changes the default route. Not the route for the local network
route.
Also metric_eth0 would give less priority to my wired network, which is not what
I want.

I was searching around the gentoo forums for ifmetric and found this piece of
code that can be added in /etc/conf.d/net:
postup() {
   local metric=0

   case "${IFACE}" in
      eth0) metric=0 ;;
      eth1) metric=1 ;;
   esac
   ifmetric "${IFACE}" "${metric}"

   return 0
}

I'll try as soon as I can and add my experience with this.

[gentoo-user] Re: configure wlan0 route metric

[deadeyes]

deadeyes <gvm999 <at> gmail.com> writes:

code that can be added in /etc/conf.d/net:
postup() {
   local metric=0

   case "${IFACE}" in
      eth0) metric=0 ;;
      eth1) metric=1 ;;
   esac
   ifmetric "${IFACE}" "${metric}"

   return 0
}

Seems like this works for me as well! :)

Thanks for your responses guys

Re: [gentoo-user] Re: configure wlan0 route metric

[Mick]

On 14 April 2011 09:13, deadeyes <gvm999@gmail.com> wrote:
> deadeyes <gvm999 <at> gmail.com> writes:
>
> code that can be added in /etc/conf.d/net:
> postup() {
>   local metric=0
>
>   case "${IFACE}" in
>      eth0) metric=0 ;;
>      eth1) metric=1 ;;
>   esac
>   ifmetric "${IFACE}" "${metric}"
>
>   return 0
> }
>
> Seems like this works for me as well! :)

It does?  I assume that eth1 above is wlan0 in your case.

If you restart both eth0 and wlan0 so as to zero the packet counters,
then start a download/upload from your a machine in your LAN, what
packet counts do you get in ifconfig for each NIC?

-- 
Regards,
Mick

[gentoo-user] Re: configure wlan0 route metric

[deadeyes]

Mick <michaelkintzios <at> gmail.com> writes:

> 
> It does?  I assume that eth1 above is wlan0 in your case.
> 


Yes indeed :) it is wlan0.