[Bridge] bridge-utils + Linksys WET11

North Antara north at ntbox.com
Fri Jul 1 13:59:48 PDT 2005


I didn't see anything useful in the tcpdump, unfortunately.

Jeff Gercken wrote:

>You could try tcpdump -i <port> ether host 00:02:a5:d3:a2:a9
>This might give you some insight as to why the port assignment changes.
>Loop maybe?
>
>-jeff
>
>-----Original Message-----
>From: bridge-bounces at lists.osdl.org
>[mailto:bridge-bounces at lists.osdl.org] On Behalf Of North Antara
>Sent: Friday, July 01, 2005 3:50 PM
>To: bridge at lists.osdl.org
>Subject: [Bridge] bridge-utils + Linksys WET11
>
>So, I'm setting up my first bridge, and I'm running into an interesting
>issue.
>
>I have a 4 port NIC (formerly 4 seperate /29 and /28 LANs) and an
>onboard NIC (to my ISP).
>
>I've setup the bridge using the script included at the bottom of this
>email (modified from Gentoo for Aurora).
>
>When the WET11 (the WET11 is a simple ethernet to wireless bridge) is
>unplugged, the bridge works wonderfully.  I'm able to connect out to the
>internet, and clients are able to talk to each other.
>
>When the WET11 is plugged in is when things start acting up.  Every
>client (including those behind the WET11) are able to connect out to the
>internet, but clients cannot talk to each other.  If Client A(port 1)
>tries to connect to Client B(port 2), `brctl showmacs br100` shows that
>Client B moved to port 4(port 4 is where the WET11 is plugged in.  If I
>change the WET11 port, the port Client B moves to is also changed), and
>the router can no longer ping Client B.
>
>[root at deadbeef root]# brctl showmacs br100
>port no mac addr                is local?       ageing timer
>  2     00:02:a5:d3:a2:a9       no                19.71
>  1     00:04:5a:6f:f4:66       no                 0.01
>  4     00:12:17:47:90:43       no                 0.43
>  4     00:13:10:16:1e:19       no                 8.43
>  1     08:00:20:ad:0b:58       yes                0.00
>  2     08:00:20:ad:0b:59       yes                0.00
>  3     08:00:20:ad:0b:5a       yes                0.00
>  4     08:00:20:ad:0b:5b       yes                0.00
>
>after pinging Client B from Client A...Client B moves.
>
>[root at deadbeef root]# brctl showmacs br100
>port no mac addr                is local?       ageing timer
>  4     00:02:a5:d3:a2:a9       no                 0.10   <-- note the
>port change
>  1     00:04:5a:6f:f4:66       no                 0.00
>  4     00:12:17:47:90:43       no                 0.49
>  4     00:13:10:16:1e:19       no                12.76
>  1     08:00:20:ad:0b:58       yes                0.00
>  2     08:00:20:ad:0b:59       yes                0.00
>  3     08:00:20:ad:0b:5a       yes                0.00
>  4     08:00:20:ad:0b:5b       yes                0.00
>
>
>I've read in the archives that wireless NICs would cause issues, but
>that shouldn't be the case here, since the router doesn't even know it's
>wireless, should it?
>
>Is this some sort of stp issue?
>
>Any suggestions would be much appreciated.  I'm out of ideas.
>
>
>#!/bin/bash
>#
>bridge="br100"
>bridge_br100_devices="eth1 eth2 eth3 eth4"
>bridge_br100_ip="192.168.1.1"
>
>return=$rc_done
>case "$1" in
>
>    start)
>        for b in ${bridge}
>        do
>                echo "Create Bridge ${b}"
>                /usr/sbin/brctl addbr ${b} || {
>                        retval=$?
>                        echo ${retval} "Failed to create bridge ${b}"
>                        continue
>                }
>                for i in $(eval echo \$\{bridge_${b}_devices\})
>                do
>                        /usr/sbin/brctl addif ${b} ${i} || {
>                                retval=$?
>                                echo ${retval} "Failed to add interface
>${i}"
>                                continue
>                        }
>                        ifconfig ${i} 0.0.0.0 promisc || \
>                                echo $? "Failed to set up interface
>${i}"
>                done
>                ifconfig $b $(eval echo \$\{bridge_${b}_ip\})
>
>                brctl setbridgeprio ${b} 0
>
>                brctl sethello ${b} 1
>                brctl setmaxage ${b} 4
>                brctl setfd ${b} 4
>                brctl stp ${b} on
>        done
>
>        echo -e "$return"
>        ;;
>    [snip]the rest of the script isn't relevant[/snip] esac
>
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>




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