card sleeping

Tue Nov 23 07:23:18 UTC 2010

On 11/22/10 10:56 PM, kalin m wrote:
>
>
> On 11/23/10 12:50 AM, Julian Elischer wrote:
>> On 11/22/10 6:14 PM, kalin m wrote:
>>>
>>>
>>> On 11/22/10 8:43 PM, Julian Elischer wrote:
>>>> On 11/22/10 5:16 PM, kalin m wrote:
>>>>>
>>>>>
>>>>> On 11/22/10 7:42 PM, Julian Elischer wrote:
>>>>>> On 11/22/10 3:52 PM, kalin m wrote:
>>>>>>>
>>>>>>>
>>>>>>> thanks...  got the ttyv8 off...
>>>>>>>
>>>>>>> any idea about the temporary network loss?
>>>>>>
>>>>>> not without more info...
>>>>>>
>>>>>> it might be you machine or the switch it's attached to..
>>>>>> you may also have a clash with another machine somewhere with 
>>>>>> the same IP address.
>>>>> i forgot to mention one important thing...  i can always ping 
>>>>> the machine from within the same network. so it seems that it's 
>>>>> not really the machine itself. the theory about the switch could 
>>>>> be - except all the other machines that are on the same network 
>>>>> do not have that problem. they are always pingable from the 
>>>>> outside, even when the machine in question is not.
>>>>>
>>>>> and of course there is no other machine with the same ip on that 
>>>>> network. i did check...
>>>>>
>>>> so have  you left tcpbump running on the machine looking at the 
>>>> interface in question?
>>>>
>>>> tcpdump -i  XX0 -p icmp
>>>> this should tell you if it's the incoming or outgoing packets 
>>>> that are getting lost.
>>>
>>> i did similar stuff. but the thing is it's not only icmp. it's tcp 
>>> too. basically the machine is unreachable form the outside in any 
>>> given time. until i ssh into it from inside. http is not 
>>> responding either. and if i leave the dcpdump dumping - detached 
>>> from the terminal - it might run out of space....
>>>
>>>
>> but you didn't answer the question...
>> when icmp fails (ping)  which packets are seen?
> i don't know. i'm at home right now. it was off again. i had to go 
> ssh into it through another machine on the same network. but the 
> second i do that the ping from outside comes alive.
> tomorrow at work will wait for this to happened and will run tcpdump 
> off the terminal of the machine itself. will report...
>
> right now it just looks like this:
>
> ............................................................................................... 
>
> 01:48:01.719224 IP machine.one.com > machine.two.com: ICMP echo 
> request, id 3386, seq 420, length 64
> 01:48:01.719250 IP machine.two.com > machine.one.com: ICMP echo 
> reply, id 3386, seq 420, length 64
> 01:48:02.719065 IP machine.one.com > machine.two.com: ICMP echo 
> request, id 3386, seq 421, length 64
> 01:48:02.719090 IP machine.two.com > machine.one.com: ICMP echo 
> reply, id 3386, seq 421, length 64
> 01:48:03.724056 IP machine.one.com > machine.two.com: ICMP echo 
> request, id 3386, seq 422, length 64
> 01:48:03.724082 IP machine.two.com > machine.one.com: ICMP echo 
> reply, id 3386, seq 422, length 64

just write it to a file so you cna see what was going on when it was 
"asleep"

I suspect a MAC setting on the switch or something.

does the 'ssh' come in on the same interface as the ping?

please check the netmasks everywhere  on the router, on the machine 
and on other local machines.

> .......................................................................................... 
>
>
> where machine.two.com is the one that disappears....
>
> thanks...
>
>
>>
>>>
>>> thanks...
>>>
>>>>
>>>>
>>>>> thanks....
>>>>>
>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On 11/22/10 6:25 PM, Julian Elischer wrote:
>>>>>>>> On 11/22/10 2:47 PM, kalin m wrote:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> hi all..
>>>>>>>>>
>>>>>>>>> recently i had to change the static ip on a machine here at 
>>>>>>>>> work. nothing wrong with that. what's happening with this 
>>>>>>>>> new ip (different network) is that for short periods of time 
>>>>>>>>> sometimes the machine is unpingable. until i try to login 
>>>>>>>>> ssh. as soon as i do that the ping and the rest of network 
>>>>>>>>> activity resumes - http.
>>>>>>>>>
>>>>>>>>> that didn't use to happen on the previous network. the only 
>>>>>>>>> change was the network information. also a bunch of other 
>>>>>>>>> machines changed at the same time and none of the others 
>>>>>>>>> present the same situation.
>>>>>>>>>
>>>>>>>>> the only entry in the log is:
>>>>>>>>> init: can't exec getty '/usr/local/bin/xdm' for port 
>>>>>>>>> /dev/ttyv8: No such file or directory
>>>>>>>>
>>>>>>>> delete or turn off the line in /etc/ttys for ttyv8
>>>>>>>>
>>>>>>>>>
>>>>>>>>> (if somebody would explain what this is, that would help 
>>>>>>>>> too. since xdm is not really in use and i can't find 
>>>>>>>>> anything that would be calling xdm.)
>>>>>>>>>
>>>>>>>>> not sure if this has any importance but the card itself is 
>>>>>>>>> BCM5750A1 NetXtreme Gigabit Ethernet PCI Express according 
>>>>>>>>> to pciconf.
>>>>>>>>>
>>>>>>>>> the machine is 7.2 release.
>>>>>>>>>
>>>>>>>>> where do i look?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> thanks...
>>>>>>>>> _______________________________________________
>>>>>>>>> freebsd-net at freebsd.org mailing list
>>>>>>>>> http://lists.freebsd.org/mailman/listinfo/freebsd-net
>>>>>>>>> To unsubscribe, send any mail to 
>>>>>>>>> "freebsd-net-unsubscribe at freebsd.org"
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>