Anyone seeing odd crashes on Lucent PM3's tonight? We have boxes dying all over the network with hard lockups. The machines are in different physical locations with different telcos. It smells alot like a DOS of some sort. Mark Radabaugh Amplex (419) 720-3635
Once upon a time, Mark Radabaugh <mark@amplex.net> said:
Anyone seeing odd crashes on Lucent PM3's tonight? We have boxes dying all over the network with hard lockups. The machines are in different physical locations with different telcos. It smells alot like a DOS of some sort.
Do you have SNMP enabled? We have a couple of TNTs stop talking to the ethernet periodically, apparently due to the SNMP bugs (and someone probing). Software upgrades are now scheduled (of course, not an option for the PM3 <sigh>). -- Chris Adams <cmadams@hiwaay.net> Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble.
On Fri, 15 Nov 2002, Chris Adams wrote:
Once upon a time, Mark Radabaugh <mark@amplex.net> said:
Anyone seeing odd crashes on Lucent PM3's tonight? We have boxes dying all over the network with hard lockups. The machines are in different physical locations with different telcos. It smells alot like a DOS of some sort.
Do you have SNMP enabled? We have a couple of TNTs stop talking to the ethernet periodically, apparently due to the SNMP bugs (and someone probing). Software upgrades are now scheduled (of course, not an option
Strange, as I recall the testing we did at the last snmp 'event' showed the TNT's to actually be one of the best off snmp-bug-wise, with no service impacting snmp bugs.
:> :> Do you have SNMP enabled? We have a couple of TNTs stop talking to the :> ethernet periodically, apparently due to the SNMP bugs (and someone :> probing). Software upgrades are now scheduled (of course, not an option : :Strange, as I recall the testing we did at the last snmp 'event' showed :the TNT's to actually be one of the best off snmp-bug-wise, with no :service impacting snmp bugs. Same here. Not that snmp bugs should matter - why should such traffic be allowed inbound?
At 11:50 PM 11/15/2002 -0500, you wrote:
Anyone seeing odd crashes on Lucent PM3's tonight? We have boxes dying all over the network with hard lockups. The machines are in different physical locations with different telcos. It smells alot like a DOS of some sort.
For some odd reason, both of our NYC POPs with different CLECS in different locations had the same problem periodically with different random PM3s. We now block all SNMP from all addresses except our management networks toward our PM3s and they have been fine ever since. You will need to create an outbound Ethernet filter from your router or an inbound filter on the PM3 Ethernet or WAN for this. Just in case the bug would still show with an inbound filter, I suggest you filter on a non-PM3 box if possible. We run ComOS 3.9.1b1 if it is of any consequence. gnapsny3> ver Lucent PortMaster PM-3 ComOS 3.9.1b1 System uptime is 136 days 8 hours 50 minutes -Robert Tellurian Networks - The Ultimate Internet Connection http://www.tellurian.com | 888-TELLURIAN | 973-300-9211 "Good will, like a good name, is got by many actions, and lost by one." - Francis Jeffrey
participants (5)
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Brian Wallingford -
Chris Adams -
Christopher L. Morrow -
Mark Radabaugh -
Robert Boyle