[smokeping-users] Re: Problem with IOSPing
Zhu, Charles
zhihongzhu at kpmg.com
Thu May 1 18:00:42 MEST 2003
Mike,
If you can develop a SmokePing probe and make use of what Cisco-RTTMON-Mib
can provide, what a great idea. We are evaluating SmokePing and some other
product which uses Cisco-RTTMON-Mib to do RTT analysis.
Charles
-----Original Message-----
From: Michael Markstaller [mailto:mm at elabnet.de]
Sent: Wednesday, April 30, 2003 3:50 AM
To: smokeping-users at list.ee.ethz.ch
Subject: [smokeping-users] Re: Problem with IOSPing
Hi,
getting back to this I want to collect some opinions and maybe some
experiences.
I went through Cisco-Ping-MIB and found it quite useless because the lack of
support to specify the source IP/If.
Cisco-RTTMON-Mib (called SAA/RTR on routers' side) is complete and would be
a great deal as Smokeping probe but quite complex to handle. But the
abailities would be great as it would provide any current IOS-router as
remote probe for many protocols (ICMP,UDP,TCP,HTTP,DNS etc.)
I know about and use Cisco's IPM (which actually uses this MIB) but I don't
like IPM that much...
I already read through Cisco-RTTMON-MIB and creating Smokeping-probes, so
I'm finally planning to actually write (and share afterwards) a
smokeping-probe for RTTMON-Mib but with my limited perl know-how and
resources any help/hint would be appreciated. What I need to achive for my
monitoring is:
- Probe latency and probably some other things with RTTMON-Mib from several
(50) Routers, so I need speed and effeciency from the start. There're
especially IPSec-SA's to be monitored so this could be several pings from
each devices)
- Monitor the RTR probes on the routers from Nagios later, as Smokeping is
very fine for latency-reporting but not for monitoring (scheduled downtimes,
host-dependencies etc.).
I'm asking myself a few question now:
- Anybody else interested in uisng RTR on cisco-boxes as probes
- is there an easier way (besides IPM) ?
- should the RTR be created once running forever on the router and then only
polled from Smokeping (and recreated if not existant)
- this is the intentional "how-to-use-RTR" Cisco had
- would make monitoring possible with something other (my Nagios)
- would make coding the probe harder
- results in orphaned probes and resulting traffic if removed from
smokeping until next reload (I'm still thinking about that, maybe I can flag
each RTR-probe on the Cisco's with a flag uniquely identifying "my"
smokeping instance and kill all orphaned probes)
- It can run always, so i.e. for 20 pings with steps 300 I could do
a ping every 15 seconds which would make stats-distribution more real
(campared with running the 20 pings within 2 seconds while probing.
- the other way would be to create a RTR-probe each run and kill it after
reading the results
- I already see myself seeking a mem-leak with cisco-TAC ;)
Another problem I see, again my perl know-how is "limited". Smokeping
expects (pings)-values from each probe which is a global parameter. now I
want to keep making 20 pings but the RTTMON-probe will intentionally only
return 3 values (min/avg/max);
what is the best way to intergrate the probe into smokeping with having 20
pings configured returning only 3 values ? making 20 out of 3 values (a perl
sniplet will make me more than happy ;) or is there a smoother way to do ?
Anybody having experiences with using Cisco-RTTMON-MIB to probe things ? Any
sample would speed up things much for me..
Michael
-----Original Message-----
From: MarsWei at ncic.com.tw [mailto:MarsWei at ncic.com.tw]
Sent: Monday, April 28, 2003 2:53 AM
To: Michael Markstaller; smokeping-users at list.ee.ethz.ch
Subject: RE: [smokeping-users] Re: Problem with IOSPing
Dear Michael,
Thanks a lot. In fact, I have already done so and it works fine since
that. Also, thanks Tobi's directions.
Best Regards,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Mars Chih-hua Wei
Engineer/Network Application Planning Group/Network Group
New Century InfoComm Tech Co., Ltd.
-----Original Message-----
From: Michael Markstaller [mailto:mm at elabnet.de]
Sent: Saturday, April 26, 2003 11:53 PM
To: smokeping-users at list.ee.ethz.ch
Subject: [smokeping-users] Re: Problem with IOSPing
> Dear Tobi,
> I wonder if it is possible to add a variable for source IP for the
advanced Ping in IOSPing. If it's possible, what could I do? Thanks a lot.
I've just patched the IOSPing.pm to be able to specify the source-interface
(you cannot specify the IP in the IOS ping command, at least not the rsh
way).
Maybe this helps, the changed IOSPing.pm is attached. You just have to
insert "iossrcif" i.e.:
--- cut ---
++++ PROBE_CONF
ioshost = router
iosuser = smoke
iossrcif = FastEthernet0/0
--- cut ---
May be the author (Paul J Murphy <paul at murph.org>) wants to integrate this
into the IOSPing-probe sometime as I think it's quite vital to specify the
source..
BTW, I'm (still) thinking of the best solution creating an SAA/RTR probe
using SNMP which would be more convinient to use without creating the "rsh"
security-hole.. Also there's a Cisco ping-mib which would also be smoother.
But besides the "rsh-issue" I really like the idea of IOSPringProbe..
regards
Michael
-- Attached file removed by Ecartis and put at URL below --
-- Type: application/octet-stream
-- Desc: IOSPing.pm
-- Size: 6k (6434 bytes)
-- URL : http://www.ee.ethz.ch/~slist/p/02-IOSPing.pm
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