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Some newbe questions

Bridge Marc Weber 2 participants 2 messages Jun 30, 2006 Ethernet bridge

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Marc Weber

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#0 lore raw

[desktop] ----- lan ----eth0 [notebook] eth1

                  192.168.?.?           ` ----- wlan ---- [speedport(hub and router)] -- internet
					           192.168.2.x

So on my laptop I have eth0 beeing lan, eth1 beeing wlan ethernet card.

When only using eth0/1 everything is fine.
Now I want to be able to use internet from both [desktop] and [notebook].

Typically you set up a bridge with

brctl addbr br1
brctl addif br1 eth0
brctl addif br1 eth1
ifconfig eth0 0.0.0.0 up
ifconfig eth1 0.0.0.0 up
ifconfig br1 up
, right?

When do I have to set the iwconfig settings? (Web password, essid?) When I also want use the internet (connect to desktop via vnc) from the notebook I have to assign an ip to the bridge, correct? ifconfig br1 192.168.x.y up

eth1 connects to lan having ips of from 192.168.2.x
Because I want to connect from desktop to speedport (using the bridge) This network (192.168.?.?) has to be 192.168.2.x, too. Correct?

Can you recommend a networking documentation which explains these things?

Marc

#1 lore raw

This is a FAQ. See:

http://linux-net.osdl.org/index.php/Bridge#I_still_don.27t_understand.21.21

Easy solution:
Don't bridge. Route or NAT through the notebook.

Harder solution:
Build your own AP and use a WDS link between the laptop and the AP. Workable but not a 'plug and chug' solution. ;-)

Have Fun,
-Mark

Quoting Marc Weber <[email protected]>:

Quoted 30 lines

[desktop] ----- lan ----eth0 [notebook] eth1

                  192.168.?.?           ` ----- wlan ----   
[speedport(hub and router)] -- internet
					           192.168.2.x

So on my laptop I have eth0 beeing lan, eth1 beeing wlan ethernet card.

When only using eth0/1 everything is fine.
Now I want to be able to use internet from both [desktop] and [notebook].

Typically you set up a bridge with

brctl addbr br1
brctl addif br1 eth0
brctl addif br1 eth1
ifconfig eth0 0.0.0.0 up
ifconfig eth1 0.0.0.0 up
ifconfig br1 up
, right?

When do I have to set the iwconfig settings? (Web password, essid?) When I also want use the internet (connect to desktop via vnc) from the notebook I have to assign an ip to the bridge, correct? ifconfig br1 192.168.x.y up

eth1 connects to lan having ips of from 192.168.2.x
Because I want to connect from desktop to speedport (using the bridge) This network (192.168.?.?) has to be 192.168.2.x, too. Correct?

Quoted 9 lines

Can you recommend a networking documentation which explains these things?

Marc
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Mark S. Mathews

AbsoluteValue Systems      Web:    http://www.linux-wlan.com
721-D North Drive          e-mail: [email protected]
Melbourne, FL 32934        Phone:  321.259.0737
USA                        Fax:    321.259.0286