EEM / Tcl Syslog Generator

[Carlton Patterson]

Hello Community,

Can someone please show me how compile either an EEM or Tcl Script that when run will generate a syslog event of my choosing. For example, I might want to generate the following syslog %bgp-5-adjacency. I know I can easily generate by shutting down the an interface on a router with BGP configured but I would like generate any syslog event.

Cheers

Carlton

[Joe Clarke · Accepted solution]

You can use the special "syslog:" file system for this:

set fd [open "syslog:" "w"]

puts $fd {%BGP-5-ADJACENCY: blah blah}

close $fd

EEM will be able to intercept this message.

[Carlton Patterson]

Hi Joseph,

Thanks for responding.

Excuse my ignorance, shall I cut and paste your example? If so, how do I get it to run?

Cheers mate.

[Joe Clarke]

This is a simple tclsh snippet.  You can run it by entering "tclsh", or you can save it in a file and do:

tclsh file.tcl

[Carlton Patterson]

Joseph,

That is what I thought.

I enterede the command router(tcl)#tclsh syslog.tcl and nothing happened

Also when I entered the command, router#tclsh syslog.tcl and I get the following:

'couldn't read file "syslog.tcl": No such file or directory'

[Joe Clarke]

You may need to specify the file system:

tclsh flash:syslog.tcl

[Carlton Patterson]

OK, going to try that now.....

[Carlton Patterson]

Hi Joseph,

These are files in flash. I've called the one you provide syslogbgp.tcl

Directory of flash:/

    1  -rw-         151                      sysloggenIntDownv2.tcl
    2  -rw-          81                      bgplogbgp.tcl
    3  -rw-          81                      syslogbgp.tcl

When I run the following nothing happens:

tclsh flash:syslogbgp.tcl

Is there something simple that I'm missing?

Cheers

[Joe Clarke]

These messages are sent like debugs.  You need to make sure you are monitoring your terminal and that you're logging at the "debug" level.

[Carlton Patterson]

Joseph,

Brilliant.

Cheers mate.

[Carlton Patterson]

Hi Joseph,

Not sure if I need to start another discussion, however I amended you're original to the following:

set fd [open "syslog:" "w"]

puts $fd {%SPANTREE-2-BLOCK_BPDUGUARD: span span}

close $fd

The script runs without the debug level activated.

Whereas I needed to activate debug ip bgp

to get your original script to work

Is there a reason for that?

Cheers

Carlton