[conspire] running ifconfig - getting errors and collisions

[Darlene Wallach]

Daniel Gimpelevich wrote:
> On Mon, 29 May 2006 17:32:40 -0700, Darlene Wallach wrote:
> 
> 
>>Daniel Gimpelevich wrote:
>>
>>>First thing to look at would be the lights on the DSL modem. If there's
>>>nothing unusual there, try to ping a known numeric IP address. The third
>>>test is to ping a named host, like below. Since you're on DHCP, one thing
>>>you can try when you have a problem is to bring down eth0 and then bring
>>>it up again.
>>>
>>>On Mon, 29 May 2006 17:04:58 -0700, Darlene Wallach wrote:
>>>
>>>
>>>
>>>>I recently got dsl. Connectivity seems to have been working
>>>>very well until today.
>>>>
>>>>I seem to keep losing connectivity and/or having connectivity
>>>>problems. Sometimes
>>>>$ ping -c4 www.google.com
>>>>ping: unknown host www.google.com
>>>>
>>>>$ ping -c4 www.google.com
>>>>PING www.l.google.com (66.102.7.99) 56(84) bytes of data.
>>>>64 bytes from 66.102.7.99: icmp_seq=0 ttl=246 time=10.9 ms
>>>>64 bytes from 66.102.7.99: icmp_seq=1 ttl=246 time=10.7 ms
>>>>64 bytes from 66.102.7.99: icmp_seq=2 ttl=246 time=10.4 ms
>>>>64 bytes from 66.102.7.99: icmp_seq=3 ttl=246 time=10.6 ms
>>>>
>>>>--- www.l.google.com ping statistics ---
>>>>4 packets transmitted, 4 received, 0% packet loss, time 3004ms
>>>>rtt min/avg/max/mdev = 10.446/10.689/10.929/0.186 ms, pipe 2
>>>>
>>>>$ /sbin/ifconfig
>>>>eth0      Link encap:Ethernet  HWaddr 00:D0:B7:79:FF:A2
>>>>          inet addr:68.183.66.92  Bcast:68.183.66.255  Mask:255.255.255.0
>>>>          inet6 addr: fe80::2d0:b7ff:fe79:ffa2/64 Scope:Link
>>>>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>>>          RX packets:151416 errors:258 dropped:0 overruns:0 frame:258
>>>>          TX packets:111640 errors:0 dropped:0 overruns:0 carrier:0
>>>>          collisions:139 txqueuelen:1000
>>>>          RX bytes:168631221 (160.8 MiB)  TX bytes:11995948 (11.4 MiB)
>>>>
>>>>I called technical support - no reported problems.
>>>>
>>>>What could be causing the errors in RX and the collisions? Is there
>>>>something I can do?
>>>>
>>>>Are there other commands I can run to troubleshoot?
>>>>
>>>>Thank you,
>>>>
>>>>Darlene
>>
>>Daniel,
>>
>>Thank you.
>>
>>I didn't think of trying a known numeric IP address.
>>
>>The lights on the modem seem to be okay.  I had tried bringing
>>down eth0 and bringing it up again. When it wouldn't connect,
>>I powered off the hub and modem, counted to 15, powered them
>>back on and tried connecting again. It failed to connect for
>>a while, then I was able to connect. Not much time passed and
>>I lost connectivity again - that is when I called support. I
>>got connectivity again but don't know why I'm getting the
>>errors and collisions.
>>
>>Darlene
> 
> 
> Did you try temporarily taking the hub out of the equation? Hubs can
> definitely affect error/collision rates.

I plugged the DSL modem into the computer thereby taking the hub
out of the equation:
# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:D0:B7:79:FF:A2
           inet addr:68.183.66.176  Bcast:68.183.66.255  Mask:255.255.255.0
           inet6 addr: fe80::2d0:b7ff:fe79:ffa2/64 Scope:Link
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:212005 errors:297 dropped:0 overruns:0 frame:297
           TX packets:165444 errors:0 dropped:0 overruns:0 carrier:0
           collisions:270 txqueuelen:1000
           RX bytes:215998291 (205.9 MiB)  TX bytes:20608803 (19.6 MiB)

lo        Link encap:Local Loopback
           inet addr:127.0.0.1  Mask:255.0.0.0
           inet6 addr: ::1/128 Scope:Host
           UP LOOPBACK RUNNING  MTU:16436  Metric:1
           RX packets:1252 errors:0 dropped:0 overruns:0 frame:0
           TX packets:1252 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0
           RX bytes:195871 (191.2 KiB)  TX bytes:195871 (191.2 KiB)

I still get errors and collisions.

At least the connection is not dropping off for now.

Darlene