Thanks to everyone for their help on this... We've proven it back to a Solarwinds issue we feel. It's happened two more times on two additional EX switches, which at first glance would really point the finger at a JunOS related issue - BUT, when I do a restart on the Windows 2008 server hosting the Solarwinds system you are able to start pinging these devices no problem.
It's not 100% conclusive but considering I can ping these EX switches from any other location while Solarwinds is reporting them as down has had me puzzled.. Thanks again for everyone's input.. appreciate it... Paul -----Original Message----- From: sth...@nethelp.no [mailto:sth...@nethelp.no] Sent: June-06-10 11:37 AM To: p...@paulstewart.org Cc: juniper-nsp@puck.nether.net Subject: Re: [j-nsp] Solarwinds Monitoring Problem > Is there default rate limiting of ICMP traffic in JunOS? There is a default limiting of all the traffic to the RE. Since you have a problem (missing ICMP echo replies while doing SNMP queries) that *might* be due to such limiting, I would strongly suggest that you do some packet sniffing and find out exactly what your NMS is trying to do. We have sizable Juniper M/MX based network here, and have never seen the problem you describe - this is with a combination of commercial monitoring systems and stuff we've developed ourselves. Mind you, we don't have any EX switches. Steinar Haug, Nethelp consulting, sth...@nethelp.no _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp