Usb Connection Howto, Windows & Linux - OE specific Options

[telemetric_au]

followed 7_feet_up's guide (thanks) and it would work as far as assigning the ip to usb0, but it seemed the pointopoint command wasnt working as i couldn't ping either way unless i executed the command:

CODE

route add -host 192.168.129.201 usb0

but i wanted this down automatically so i added it into /etc/network/interfaces like so:

CODE

iface usb0 inet static
address 192.168.1.105
netmask 255.255.255.0

post-up route add -host 192.168.1.201 usb0

* adjust your ip's to suit and enjoy ~1-3ms response times

now onto ICS ...

[telemetric_au]

well after mucking aroun some i cant get my z to ping past my pc which is connected by ethernet to adsl/router and the interent ...

have put the iptables config commands as suggeste in the interfaces file and is executing but doesnt seem to work

i d like explained this code : specifically the choice of ip's that relevance...

CODE

up iptables -t filter -A FORWARD -s 192.168.129.0/24 -j ACCEPT
up iptables -t filter -A FORWARD -d 192.168.129.0/24 -j ACCEPT
up iptables -t nat -F PREROUTING
up iptables -t nat -P PREROUTING ACCEPT
up iptables -t nat -F POSTROUTING
up iptables -t nat -P POSTROUTING ACCEPT
up iptables -t nat -F OUTPUT
up iptables -t nat -P OUTPUT ACCEPT
up iptables -t nat -A POSTROUTING -s 192.168.129.0/24 -o usb0 -j MASQUERADE

[telemetric_au]

I GOT IT WORKING !!! --finally after trying every other tech...

(SL-5500 connected via usb cradle to DEBAIN SID connected via ethernet to ADSL router)

with another method briefly touched on in this and most threads.... "bridging"

here's the config:

first: apt-get install bridge-utils
(this gives you the brctl command)

PC's : /etc/network/interfaces (note: 192.168.1.105 is simply a dummy address to bring usb0 up with and is then reset to 0.0.0.0)

CODE

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
address 0.0.0.0
netmask 0.0.0.0

auto br0
iface br0 inet dhcp
pre-up brctl addbr br0
pre-up brctl addif br0 eth0
post-down brctl delbr br0

allow-hotplug usb0
mapping hotplug
script grep
map usb0
iface usb0 inet static
address 192.168.1.105
netmask 255.255.255.0
post-up ifconfig usb0 0.0.0.0 up
post-up brctl addif br0 usb0
post-down brctl delif br0 usb0

exec # /etc/init.d/networking restart

alternatively br0 can be assigned manually rather than dhcp from a router etc...

Zaurus's Network Set-up GUI ;

configure usbd0:

CODE

check automatically bring-up
set ip address, subnet, gateway, dns's as needed (with gateway being your pc's assigned ip *(not router), be that for eth0 or what would now be br0)

now as i did a fair bit of mucking around first there may be some of the things prior to this method needed though i dont recon here they are:

on Z; edit /etc/resolv.conf to match your pc's ... and add def gateway commands etc as commonly done, but i think OPZ's GUI setup screen handles that...

-can now ping www.google.com ... now onto package management ...

references:

http://www.gumstix.org/tikiwiki/tiki-index...page=Networking
http://www.stolk.org/debian/bluetooth.html

[telemetric_au]

Just to make life even more sweet, i just set the OPZ GUI network interefaces setup for usbd0 to DHCP,
took it out the cradle put it back in, waited a bit, closed and opened the config applet (to refresh) and it's now been assigned an ip from my router !!

and just to check can still ping www.google.com

-and the package manager has started working , just updated the package list and about to start checkin' the feed

[telemetric_au]

i just added an updated bridging guide to the wiki:

http://www.oesf.org/index.php?title=Generi...and_Bridging%29

[lardman]

Please add stuff to the official OZ wiki: http://openzaurus.berlios.de/

Thanks


Si

[telemetric_au]

trying to do it now, but the server is soooo slow...

would also like to be able to upoad images...

[NickNak]

I have run into problems with my bridging setup: I can log into my SL-5500 using ssh, ping hosts on the internet, download small files using wget, but if I try to download anything bigger than about 1k I get "no response from the server". I have noticed that usb0 on the desktop gets an MTU of 1494 whereas usbd0 at the other end on the Zaurus gets an MTU of 1500. I can't increase usb0 to 1500 on the desktop, but if I decrease usbd0 to 1494 on the Z ('ifconfig usbd0 mtu 1494') the problem is fixed. My question is: why doesn't this 'just work'? Why do usb0 and usbd0 get different MTUs? Is there a bug somewhere, or is there something wrong with my setup?

[telemetric_au]

sorry, but i have no experience with that problem ... i have seen mention of it elsewhere, either in the wiki or on the boards...

[7_feet_up]

I have run into problems with my bridging setup:  I can log into my SL-5500 using ssh, ping hosts on the internet, download small files using wget, but if I try to download anything bigger than about 1k I get "no response from the server".  I have noticed that usb0 on the desktop gets an MTU of 1494 whereas usbd0 at the other end on the Zaurus gets an MTU of 1500. I can't increase usb0 to 1500 on the desktop, but if I decrease usbd0 to 1494 on the Z ('ifconfig usbd0 mtu 1494') the problem is fixed.  My question is: why doesn't this 'just work'?  Why do usb0 and usbd0 get different MTUs? Is there a bug somewhere, or is there something wrong with my setup?

I don't know what causes the necessity to shrink the mtu, but the issue has been described before on the usbnet driver page and already has been reported on the kernel bugzilla. I certainly would consider it a bug, either on the zaurus side, or on the desktop side.

[NickNak]

The "USB Networking" howto submitted by telemetric_au seems to be Debian-specific, maybe the title should reflect that. I have just added a Gentoo-specific howto: http://openzaurus.berlios.de/HowTos/Bridging_with_Gentoo which includes a workaround for the MTU problem I mention above.

[telemetric_au]

The "USB Networking" howto submitted by telemetric_au seems to be Debian-specific, maybe the title should reflect that.  I have just added a Gentoo-specific howto: http://openzaurus.berlios.de/HowTos/Bridging_with_Gentoo which includes a workaround for the MTU problem I mention above.

would like to get a look at that, but the server wont even load the page...

i do mention what system its setup on...

will look into it more though when can load your page...

good to hear you got it worked

[telemetric_au]

NickNak:

fixed up my title to debian rather than generic,

and gave a link to your page ...

nice guide, i didnt realise there was such difference between the systems...

thanks

[benplaut]

waiting for an arch tutorial, all you arch users hidden in the shadows

anyway, if i figure it out, i'll post

[lardman]

If someone fancies tidying up the info in this thread and adding it to the OZ wiki (http://openzaurus.berlios.de/ or http://wiki.openzaurus.org/), that would be useful.


Si