[j-nsp] Solarwinds Monitoring Problem

[Paul Stewart]

Thank you... unless I'm reading it wrong it looks ok:

icmp:
         0 drops due to rate limit
         67129 calls to icmp_error
         0 errors not generated because old message was icmp
         Output Histogram
                 53894 echo reply
                 67129 destination unreachable
         0 messages with bad code fields
         0 messages less than the minimum length
         35 messages with bad checksum
         0 messages with bad source address
         1 messages with bad length
         0 echo drops with broadcast or multicast destinaton address
         0 timestamp drops with broadcast or multicast destination address
         Input Histogram
                 20 echo reply
                 248 destination unreachable
                 53894 echo
                 58 time exceeded
         53894 message responses generated


Is there default rate limiting of ICMP traffic in JunOS?

Take care,
Paul


-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net
[mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Ihsan Junaidi
Ibrahim
Sent: June-06-10 10:42 AM
To: juniper-nsp
Subject: Re: [j-nsp] Solarwinds Monitoring Problem

Hi,

If you do a show system statistics icmp, do you see any drops resulting from
rate limiting?

On 6 June 2010 20:43, Paul Stewart <paul at paulstewart.org> wrote:

> Great... and guess what we're getting ready to deploy? ;)  We have an NSM
> Express system sitting in the box ready to go soon...
>
>
>
> Our problem though doesn't appear to be SNMP itself - just problems
pinging
> the hosts..... during  the time that Solarwinds says "site is down" you
> can't ping the box however SNMP still functions...
>
>
>
> Cheers,
>
>
>
> Paul
>
>
>
>
>
> From: Jeff Cadwallader [mailto:wompus at gmail.com]
> Sent: June-05-10 8:24 PM
> To: Paul Stewart
> Cc: juniper-nsp
> Subject: Re: [j-nsp] Solarwinds Monitoring Problem
>
>
>
> Paul
>
> We have seen the same thing on our ex series 3200 and 4200. we have not
> seen
> it on our MX480's yet. Our logs showed that the SNMP daemon had stopped.
> Opened a case with jtac and they mention (after 2 months I might add) that
> if you used Juniper's NMS (which we are) that that might cause those
> symptoms due to excessive polling. We junked the NMS and it hasn't seemed
> to
> happen since.
>
> Jeff
>
> On Sat, Jun 5, 2010 at 8:23 AM, Paul Stewart <paul at paulstewart.org> wrote:
>
> Hi folks...
>
>
>
> I'm starting here to see if anyone has seen this behaviour before by
> chance....
>
>
>
> We're in a migration to Solarwinds for monitoring of our network
resources.
> On the network are several Juniper devices (and lots more coming soon).
>
>
>
> Every so often (about once a month or so), the Solarwinds system triggers
> with a "node down" alarm.  When this occurs, it's showing a Juniper device
> (which varies) as "down".  Definition of "down" simply means it's not
> pingable.
>
>
>
> The behaviour we're seeing is that from the Solarwinds server we suddenly
> cannot ping the remote Juniper device - however - we continue to monitor
> SNMP successfully on that device.  These Juniper devices have been MX480,
> EX3200 and EX4200 to date.  During these outages I have been able to ping
> these devices from any other location on our network except the Solarwinds
> server.
>
>
>
> If I reboot the Solarwinds server, the alarm clears so I thought this is
> clearly an issue with the monitoring system ... but ... recently I
rebooted
> one of the Juniper switches and the issue cleared as well....
>
>
>
> Logs on the Juniper devices are clean - nothing indicating a problem.
> Solarwinds systems doesn't show anything of interest...
>
>
>
> Thoughts? ;) I'm thinking of setting up another open source monitoring
> solution just to further eliminate the Juniper side of this...
>
>
>
> Paul
>
>
>
>
>
>
>
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-- 
Thank you for your time,
Ihsan Junaidi Ibrahim
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