06-20-2011 05:34 PM
Dear All,
In an upcoming project, i will need to know if a cable has be physically disconnected from the router. Are there any SNMP traps for this particular event? If I recieve a linkdown from IF-MIB and check if the value of cieIfOperStatusCause from CISCO-IF-EXTENSTION is linkfailure, will i be able to confirm that a cable has been disconnected phyiscally?
Thanks in advance.
Angus
06-22-2011 07:13 PM
So there are no ways to do this with SNMP?
I have read the datasheets you provided.
I will be using SRE so i guess the ISR one will suit me better.
Can it be installed with SRE-V on the same SRE module?
Also, will it be possible to write a custom C/C++ application running on the SRE-V to recieve information from NAM?
Thank you for your help!
06-22-2011 08:56 PM
Sorry for the previous reply, I was looking at the wrong screen. At any rate in regards to your primary questions about traps for physical disconnect. Do the following on the device:
snmp-server enable traps snmp linkup linkdown coldstart
This should notify you when the link is physically disconnected with a linkdown trap and when connected again with a linkup trap.
There is a known bug for older IOS trains that did not generate the linkdown trap when the cable was disconnected. The bug id is CSCsg24215 SNMP linkdown traps not generated in 12.2(33)SRA1.
-nael
06-22-2011 09:27 PM
Does this trap specifically detect physical disconnections?? Are there any cases where linkdown trap will be thrown eventhough the cable was not physically disconnected?
06-28-2011 04:55 PM
This trap will detect any linkup or linkdown triggers.
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