Ascend Archive
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Re: (ASCEND) Random momentary routing failures
>this is probably not what is happening but check to make sure that it isn't.
>make sure that pools only is set to yes. If someone dials in and decides to
>grab the IP of your default gateway or your ethernet interface, you will be
>screwed. that won't explain the frame relay profiles switching but its worth
>a shot to begin with.
>
>Twice in one day i lost the ethernet interface of a max at a remote pop.
>there were no errors or dropped calls but the message log did show dial in
>attempts during the outage so setting pools only = yes stopped that from
>re-occuring.
An excellent suggestion, but unfortunately Pools Only is already Yes. This
is definitely a basic security precaution.
>try to issolate exactly what is in common with the things that are going
>down. things like "is your external CSU/DSU connected to the same UPS as the
>hub?"
It just befuddles me because it just looks to be unrelated things. As soon
as I go to blame it on a failing Ethernet hub, bad wiring, etc., I remember
those Frame profiles moving around. It just don' make no sense.
>-----Original Message-----
>>The Max has a PRI and a Frame line with two DLCIs. On the local Ethernet is
>>a machine that queries it via SNMP every minute for traffic graphing and to
>>make sure it's responding. If it doesn't respond, I get paged.
>>
>>Occasionally, I get paged that it's down, along with everything beyond it
>>and some devices on the local Ethernet (presumably those that happen to get
>>queried while the Max is acting up). A minute later, on the monitoring
>>device's next query, everything comes back up.
>>
>>The Max always says it's been up for a while, so it didn't reset. There's
>>nothing in the Fatal Error log and Syslog shows nothing out of the
>ordinary.
>>
>>So it looks like the monitoring system lost it's mind, right?
>>
>>Right, except that usually one or both of the two Frame profiles
>>simultaneously move to different interfaces.
>>
>>So it looks like the Frame line went down, twice, right? Right, except why
>>did the Max stop responding to SNMP queries both times?
>>
>>Also, even local devices on the Ethernet are reported as down at the time,
>>which looks like the Ethernet is flaky. Except the Frame profiles move
>>around! Other profiles mey too, but I haven't tracked them so far.
>>
>>I've been back and forth with Support on this, but so far I don't think
>>anyone is getting the picture.
>>
>>Is anyone else seeing anything like this?
>>
>>Peter Lalor
Peter Lalor
Infoasis
plalor@infoasis.com
http://www.infoasis.com/
415-459-7991 x102
415-459-7992 fax
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