UBR EEM script resetting the modem
Hello,
I'm trying to find a way to perform some action on cable modem basing on syslog event. Let's take an example: I'm getting the following message in the syslog:
%UBR10000-5-UNREGSIDTIMEOUT: CMTS deleted unregistered Cable Modem XXXX.YYYY.ZZZZ
Now, I'd like the script to reset this modem when such event occurs (maybe it makes no sense to reset deleted modem but it's only example)
And now I'm looking for the way, how to use the event syslog message in the script and how to extract the MAC address of the modem from this line.
Being specific - how to get $MAC variable, having in mind that there's no regexp command on UBR IOS?
event manager applet modem_reset
event syslog occurs 1 pattern "CMTS deleted unregistered Cable Modem" period 1
action 1 cli command "clear cable modem $MAC reset"
BR,
Andrzej
Hello, Joseph,
Thanks a lot for your reply. I have followed your advice and prepare an example script, however I have an issue with extracting particular substring. This is the first time I'm fighting with TCL scripts so sorry my ignorance. Please, could you look at this and let me know what could be wrong here:
U10k#sh run | sec event
event manager environment sub4
event manager directory user policy "disk0:/"
event manager session cli username "user"
event manager applet config
event syslog occurs 1 pattern "Configured from" period 1
action 1 cli command "type $_syslog_msg | append disk0:conf_log"
action 2 cli command "show cable modem | append disk0:conf_log"
action 3 policy tcl.tcl
event manager policy tcl.tcl type user
U10k#
U10k#
U10k#
U10k#
U10k#more disk0:tcl.tcl
::cisco::eem::event_register_syslog occurs 1 pattern {Configured from} period 1
# This EEM tcl policy was generated by the EEM applet conversion
# utility at http://www.marcuscom.com/convert_applet/
# using the following applet:
# event manager applet config
# event syslog occurs 1 pattern "Configured from" period 1
# action 1 regexp "from console by [A-Za-z] on" $_syslog_msg user sub1 sub2 sub3 sub4
# action 2 syslog msg "Configuration changed by $sub4"
namespace import ::cisco::eem::*
namespace import ::cisco::lib::*
array set arr_einfo [event_reqinfo]
set _regexp_result [regexp {from console by [A-Za-z] on} $arr_einfo(msg) user sub1 sub2 sub3 sub4]
action_syslog msg "Configuration changed by $sub4"
U10k#
U10k#
U10k#
U10k#
U10k#clear logging
Clear logging buffer [confirm]
U10k#conf t
Enter configuration commands, one per line. End with CNTL/Z.
U10k(config)#int gig
U10k(config)#int gigabitEthernet 1/0/2
U10k(config-if)#shu
U10k(config-if)#shutdown
U10k(config-if)#no shu
U10k(config-if)#no shutdown
U10k(config-if)#exit
U10k(config)#exit
U10k#sh
U10k#show logg
U10k#show logging
Syslog logging: enabled (0 messages dropped, 781 messages rate-limited, 5 flushes, 0 overruns, xml disabled, filtering disabled)
No Active Message Discriminator.
No Inactive Message Discriminator.
Console logging: level debugging, 500 messages logged, xml disabled,
filtering disabled
Monitor logging: level debugging, 0 messages logged, xml disabled,
filtering disabled
Buffer logging: level informational, 1225 messages logged, xml disabled,
filtering disabled
Exception Logging: size (4096 bytes)
Count and timestamp logging messages: disabled
Persistent logging: disabled
Trap logging: level informational, 1230 message lines logged
Log Buffer (131072 bytes):
001264: Feb 19 11:39:06.647 GMT+1: %SYS-5-CONFIG_I: Configured from console by klonex on vty1 (192.168.101.197)
001265: Feb 19 11:39:06.787 GMT+1: %HA_EM-6-LOG: tmpsys:/eem_policy/tcl.tcl: Configuration changed by
001266: Feb 19 11:39:07.167 GMT+1: %HA_EM-3-FMPD_ERROR: Error executing applet config statement 3
BR,
Andrzej
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