[CentOS] ethernet outages C5.4

Fri May 14 20:41:59 UTC 2010
Dave Stevens <geek at uniserve.com>

Quoting JohnS <jses27 at gmail.com>:

>
> On Fri, 2010-05-14 at 12:39 -0700, Dave Stevens wrote:
>> Hello All,
>>
>> I don't have any reason to believe CENTOS (5.4) is underlying my
>> difficulties but it's what I've got to work with so here's the setup:
>>
>> I have a 2P motherboard with 2 Opteron 2376s and two ethernet ports.
>> The setup is fully virtualized, with Dom0, dom4 and Dom1 up and
>> running. dom4 is attached to a dhcp service on eth0 and has no problems.
>>
>> I've recently connected dom1 to eth1. eth1 is connected to a dsl modem
>> (no router) and to the ISP's dsl signal It has a static IP address,
>> 204.174.35.205. At intervals of a few hours the dom1 service on eth1
>> became inaccessible, not responding for either web or ssh access. eth0
>> on another provider's network remains up at this time. I can fix the
>> availability issue by ssh'ing to the eth0 side, then ssh from there to
>> dom1 (at 192.168.0.117) and then from the inside out ping any external
>> address, it doesn't seem to matter which one. Then the connections get
>> through and all is well for a while.
>>
>> I have a workaround in place with this command:
>>
>> watch -n 60 ping -c 1 uniserve.com
>
> Effectively your telling it to KeepAlive.
> Is the router/modem going to sleep?
> Preston seems to think like me also I just read his reply to you.
>
>
> John

OK, I'm talking to the modem supplier/tech support. Will let you know.

Thanks,

Dave


>
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