Antw: Re: What Is The Best Way To MonitorEthernet Ports?
Michael Seibold <Michael.Seibold <at> Gek.de>
2009-06-02 10:54:00 GMT
Hi,
one solution to both questions (monitoring ethernet interfaces / cisco
modules) might be to
- configure data collection for ifOperStatus (I think there is
something similar for cisco modules) anf ifType=6 (Ethernet)
- configure a threshold for this collection. ifOperStatus should be an
integer, 1 = up, 2 = down. Threshold for ifOperStatus > 1 will trigger
if interface is down.
- more sophisitcated: configure also data collection for ifAdminStatus,
1 = up, 2 = down. Normally you don't want alarms for admin down
interfaces, so you might use a computed threshold (didn't do this up to
know, but tell me if it works
) using something like
(2-ifAdminStatus) * ifOperStatus. This should be zero for
ifAdminStatus=down (2), 1 for admin/oper = up/up, 2 for up/down, so the
same threshold like above would be appropriate.
Another solution is to search the doku and the mailing list. I think
there was a mail mentioning that Antonio wrote some snmp status monitor
for this type of issue. Let me know when you find a solution, I have to
do the same thing the next days.
- Michael
>>> Dark Neko <dark.neko <at> gmail.com> 29.05.2009 20:57 >>>
hello,
on a somewhat related note, one thing I would love to see is a way to
actively poll the modules status of cisco devices
has anyone managed that yet with opennms?
Silas Moeckel a écrit :
> Traps + polling traps get you real time but might get lost somewhere.
> Polling fills in that gap so you get sub second notification if
things
> work correctly or your polling period + timeout in the worst case. AS
> you get bigger polling does not scale well so you end up adjusting
your
> polling period up to not overload your NMS or gear.
>
> Silas
>
> Aaron Leach wrote:
>
>> Hello,
>>
>> I have been researching how to monitor interfaces/ports that have no
>> IP address associated with them. We are monitoring Alcatel switches,
>> all ports are switch ports with no IP addresses associated with
them.
>> What is the best way to monitor these ports? We need real time
checks.
>> Is it better to get the trap when the port goes down and then
process
>> a notification on that? Or is it better to poll devices’ ports
using
>> the port OID for status?
>>
>> Aaron Leach
>>
>> Network Engineer
>>
>>
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