[Bridge] Neighbour table overflow

ro0ot ro0ot at phreaker.net
Tue Jan 4 16:40:42 PST 2005


I had this line for the br0 IP address: -

ifconfig br0 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255

Regards,
ro0ot


Bart De Schuymer wrote:

>Op wo, 05-01-2005 te 01:39 +0800, schreef WL Siew:
>  
>
>>Hi,
>>
>>I had successfully setup my bridge (br0) but after few minutes the br0 
>>interface seems not working.
>>
>>ifconfig eth0 0.0.0.0
>>ifconfig eth5 0.0.0.0
>>
>>brctl addbr br0
>>
>>brctl addif br0 eth0
>>brctl addif br0 eth5
>>
>>brctl stp br0 on
>>    
>>
>
>>From the information you give, it seems that you assigned the IP address
>0.0.0.0 to your bridge ports and you didn't to start the bridge itself.
>Your box therefore has no IP address and will therefore not respond to
>icmp messages.
>
>Try
># ifconfig br0 $IP_ADDRESS
>A ping to $IP_ADDRESS from another host should then work (after you
>start the bridge it can take a few seconds before the bridge responds).
>
>  
>
>>I check on my system's /var/log/syslog file.  It shows something strange 
>>messages as below: -
>>
>>Jan  2 10:44:22 fw01 kernel: ipt_tcpmss_target: bad length (64 bytes)
>>Jan  2 10:44:32 fw01 last message repeated 11 times
>>Jan  2 12:27:08 fw01 kernel: Neighbour table overflow.
>>Jan  2 12:27:11 fw01 last message repeated 9 times
>>Jan  2 12:27:13 fw01 kernel: NET: 10 messages suppressed.
>>    
>>
>
>Perhaps these are triggered by the fact that your network devices enter
>promiscuous mode.
>
>  
>
>>I unplug the network cable connected to the eth5 and run a ping to my 
>>router...the network is up again...I am able to ping my router.
>>    
>>
>
>I'm assuming you are talking about the bridge box when you are talking
>about the router? The bridge ports of a bridge are by default not
>separately pingable. Only the IP address of the bridge (br0) device
>itself is pingable.
>You can change that behaviour by making a brouter. You can then assign
>IP addresses to the bridge ports and use them.
>
>cheers,
>Bart
>
>
>
>  
>






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