Generate SNMP trap from a TCL script within EEM - ASR9000

[dsliwinski]

I want my script to generate a snmp trap instead of a syslog. How do I do that? He is the command I use to genearate the syslog

action_syslog msg "EEM - Check for Layer 2 Loop completed."

[Joe Clarke]

action_snmp_trap strdata "EEM - Check for Layer 2 Loop completed."

[dsliwinski]

It does not seem to work. Does this work in XR software?

[Joe Clarke]

Sorry, I missed the ASR9000 in the subject.  No, unfortunately, there is no trap support on XR at the moment.  Syslog is the only recourse.

[dsliwinski]

I found these two commands. Do you know what they do? It looks like you can build a custom snmp trap bindings.

sys_reqinfo_snmp_trapvar

sys_reqinfo_snmp_trap

[Joe Clarke]

Yes, you can.  I always forget that those commands are supported on XR as well as IOS.  I wrote a doc on using them at

https://supportforums.cisco.com/docs/DOC-11745 .

[dsliwinski]

It does not seem to work. Is this supported in 4.1.1 version of XR software? Here is what I configured and error I got:

sys_reqinfo_snmp_trapvar var vbinds oid 1.3.6.1.4.1.33333.2.0 string "send_custom_trap.tcl"

sys_reqinfo_snmp_trapvar var vbinds oid 1.3.6.1.4.1.33333.3.0 string "This is a custom trap"

sys_reqinfo_snmp_trap enterprise_oid 1.3.6.1.4.1.33333.1 generic_trapnum 6 specific_trapnum 1 trap_oid 1.3.6.1.4.1.33333.1.0.1 trap_var vbinds

RP/0/RSP0/CPU0:Mar  5 14:54:08.103 : syslog_dev[93]: noscan: No trap variable "vbinds"

RP/0/RSP0/CPU0:Mar  5 14:54:08.103 : syslog_dev[93]: noscan:     while executing

RP/0/RSP0/CPU0:Mar  5 14:54:08.103 : syslog_dev[93]: noscan: "sys_reqinfo_snmp_trap enterprise_oid 1.3.6.1.4.1.33333.1 generic_trapnum 6 specific_trapnum 1 trap_oid 1.3.6.1.4.1.33333.1.0.1 trap_var vbinds

RP/0/RSP0/CPU0:Mar  5 14:54:08.103 : syslog_dev[93]: noscan: "

RP/0/RSP0/CPU0:Mar  5 14:54:08.104 : syslog_dev[93]: noscan:     (file "/dev/rdsfs/etc/eem_rdsfs/eem_counter_lookup_v1_0.tcl" line 100)

[Joe Clarke]

From what I can tell this should work.  However, I don't have an XR device with which to test.  Can you enable "debug event manager tcl commands" reproduce the issue, and post the output?

[dsliwinski]

I could not find option "debug event manager tcl commands" - only"debug event manager tcl". But no logs were generated. When I enabled "debug event manager all", there were logs generated. The details are in the  attached file.

[Joe Clarke]

I'm seeing some strange double-quotes inserted on these lines, and I'm not sure why.  Can you post the script file?

[Joe Clarke]

Nevermind.  I just confirmed, custom trap support was added to XR 4.2 and higher.  While the commands are there, it will not work in 4.1.  This is bug CSCue21891.

[dsliwinski]

Ok, that makes sense. We are upgrading the lab nodes to 4.3.1 soon, so I will find out. Thank you for your help!

[andrew.koch]

Joseph, That is an internal bug.  When I opened a case with TAC on the same in January, the reply I received was:

In summary, feature you are trying to do is available from 4.2.0 as 

internal bug mentions, and documentation feedback will be submitted today.

TAC was going to submit a request to have the 4.1 documentation updated to reflect the SNMP trap being unavailable.