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 :: Mailing Lists

[ILUG] Routing problem

[ILUG] Routing problem

Kevin lists at cybercolloids.net
Sun Mar 1 19:01:28 GMT 2009


John Allen wrote:
> Kevin wrote:
>> I am having problems with my Debian/Lenny firewall/routing box. The 
>> internet connection runs really, really slow. It does work - but its 
>> very slow.
>>
>> My internal lan is 192.168.100.*
>> My DSL router is 192.168.1.254
>> My external nic (wireless) is 192.168.1.1
>> My internal nic is 192.168.100.1
>>
>> I checked the routing table:
>>
>> Kernel IP routing table
>> Destination     Gateway         Genmask         Flags Metric Ref    
>> Use Iface
>> 192.168.100.0   *               255.255.255.0   U     0      0        
>> 0 eth0
>> 192.168.1.0     *               255.255.255.0   U     0      0        
>> 0 wlan0
>> default         192.168.1.254   0.0.0.0         UG    0      0        
>> 0 wlan0
>>
> Your default route is the wireless connection, I'd guess the wireless 
> connection is the issue.
>>
>> Ifconfig/iwconfig look OK. However if I run traceroute I get some odd 
>> results:
>>
>> traceroute to an internal LAN address completes in 1 hop
>>
>> traceroute to the DSL router 192.168.1.254 from the firewall box 
>> fails after about 30 hops - it should be 1 hop.
>>
>> Running tracepath on the DSL box gives me:
>>
>> server:/home/kevinphilp# tracepath 192.168.1.254
>> 1:  192.168.1.1 (192.168.1.1)                              1.218ms 
>> pmtu 1500
>> 1:  no reply
>> 2:  no reply
>>
>> On google I get the same
>> server:/home/kevinphilp# tracepath www.google.com
>> 1:  192.168.1.1 (192.168.1.1)                              0.950ms 
>> pmtu 1500
>> 1:  no reply
>> 2:  no reply
>>
>> Any thoughts welcome
>>
>> Kevin.
>>
>
There does seem to be something wrong with it - the signal quality is 
claims to get from the access point is about 50% - which is weak 
considering the access point is about 15 feet away. Also it constantly 
backs off the rate from 54M down to 1M - my guess is either the wireless 
card or the router are decrepit - does that sound reasonable?




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