Nagios Support Forum

Hi Team,

Am trying to set up monitoring on all our Cisco interfaces so that, I get notified of Status being UP/DOWN, if SFP is faulty or disconnected for some reason and so on. I manage to get bandwidth alerts on my devices but staus wont work.

I managed to get SNMP walk for the host interface am trying to monitor:

I am pretty new to Nagios and trying to make sense of this output, am I missing any parameter, also have installed the plugin "check_snmp_netint.pl" to Nagios but unable to run any check_snmp_netint commands from the shell.

*******************************************SNMPWALK**********************************************************

[xlalitam@ns01ngmonp01 ~]$ snmpwalk -v 3 -u XXXXXXX -l authPriv -a sha -A YYYYYYY -X YYYYYYYYY -H A.B.C.D

Configuration directives understood:
In snmpwalk.conf and snmpwalk.local.conf:
includeRequested (1|yes|true|0|no|false)
excludeRequested (1|yes|true|0|no|false)
printStatistics (1|yes|true|0|no|false)
dontCheckOrdering (1|yes|true|0|no|false)
timeResults (1|yes|true|0|no|false)
timeResultsSingle (1|yes|true|0|no|false)
In snmp.conf and snmp.local.conf:
extraX509SubDir string
x509CRLFile string
tlsAlgorithms string
localCert string
peerCert string
alias NAME TRANSPORT_DEFINITION
doDebugging (1|0)
debugTokens token[,token...]
logTimestamp (1|yes|true|0|no|false)
logOption string
mibdirs [mib-dirs|+mib-dirs|-mib-dirs]
mibs [mib-tokens|+mib-tokens]
mibfile mibfile-to-read
showMibErrors (1|yes|true|0|no|false)
commentToEOL (1|yes|true|0|no|false)
strictCommentTerm (1|yes|true|0|no|false)
mibAllowUnderline (1|yes|true|0|no|false)
mibWarningLevel integerValue
mibReplaceWithLatest (1|yes|true|0|no|false)
printNumericEnums (1|yes|true|0|no|false)
printNumericOids (1|yes|true|0|no|false)
escapeQuotes (1|yes|true|0|no|false)
dontBreakdownOids (1|yes|true|0|no|false)
quickPrinting (1|yes|true|0|no|false)
numericTimeticks (1|yes|true|0|no|false)
oidOutputFormat integerValue
suffixPrinting integerValue
extendedIndex (1|yes|true|0|no|false)
printHexText (1|yes|true|0|no|false)
printValueOnly (1|yes|true|0|no|false)
dontPrintUnits (1|yes|true|0|no|false)
hexOutputLength integerValue
dumpPacket (1|yes|true|0|no|false)
reverseEncodeBER (1|yes|true|0|no|false)
defaultPort integerValue
defCommunity string
noTokenWarnings (1|yes|true|0|no|false)
noRangeCheck (1|yes|true|0|no|false)
persistentDir string
tempFilePattern string
noDisplayHint (1|yes|true|0|no|false)
16bitIDs (1|yes|true|0|no|false)
clientaddr string
clientaddrUsesPort (1|yes|true|0|no|false)
serverSendBuf integerValue
serverRecvBuf integerValue
clientSendBuf integerValue
clientRecvBuf integerValue
noPersistentLoad (1|yes|true|0|no|false)
noPersistentSave (1|yes|true|0|no|false)
noContextEngineIDDiscovery (1|yes|true|0|no|false)
timeout integerValue
retries integerValue
defDomain application domain
defTarget application domain target
dontLoadHostConfig (1|yes|true|0|no|false)
defSecurityModel string
tsmUseTransportPrefix (1|yes|true|0|no|false)
defAuthType MD5|SHA
defPrivType DES|AES
defSecurityName string
defContext string
defPassphrase string
defAuthPassphrase string
defPrivPassphrase string
defAuthMasterKey string
defPrivMasterKey string
defAuthLocalizedKey string
defPrivLocalizedKey string
defVersion 1|2c|3
defSecurityLevel noAuthNoPriv|authNoPriv|authPriv
trustCert trustCert FINGERPRINT|FILENAME
In snmpapp.conf and snmpapp.local.conf:
defDomain application domain
defTarget application domain target
engineID string
engineIDType num
engineIDNic string


Please do let me know, if at all any other data is required.

Kind Regards
LM

What is the output when you try to run check_snmp_netint or check_snmp_int?

The snmpwalk output provided is seen when the syntax is off. Try 'snmpwalk -v3 -u XXXXXXX -l authPriv -a sha -A YYYYYYY -X YYYYYYYYY A.B.C.D' and see if that gives you better results.

Using the below Syntax, I got the following result:

snmpwalk: Authentication failure (incorrect password, community or key)


To be able to run: "check_snmp_netint or check_snmp_int", how will I be able to enter global config mode as we call in Cisco platform, not much inti Nagios. Currently on my screen, it wont allow me to run these commands

[xlalitam@ns01ngmonp01 ~]$ check_snmp_netint
-bash: check_snmp_netint: command not found

Kind Regards
Lalita

The incorrect password was given that time. You may need to pass it "-x" as well:
For the plugins, you must be in the proper directory to run them. Try this:
check_snmp_netint should also be copied to that directory and made executable before you can run it:

[root@ns01ngmonp01 ~]# chmod 775 /usr/local/nagios/libexec/check_snmp_netint
chmod: cannot access ‘/usr/local/nagios/libexec/check_snmp_netint’: No such file or directory
[root@ns01ngmonp01 ~]# chmod 775 /usr/local/nagios/libexec/check_snmp_netint
chmod: cannot access ‘/usr/local/nagios/libexec/check_snmp_netint’: No such file or directory
[root@ns01ngmonp01 ~]# chown apache:nagios /usr/local/nagios/libexec/check_snmp_netint
chown: cannot access ‘/usr/local/nagios/libexec/check_snmp_netint’: No such file or directory


[root@ns01ngmonp01 ~]# cd /usr/local/nagios/libexec/
[root@ns01ngmonp01 libexec]# ./check_snmp_int
-bash: ./check_snmp_int: No such file or directory

I am getting an error, saying no such directory.

Try this instead:
Or you can run it directly like this:
But this file needs to exist:
See here as well:

https://assets.nagios.com/downloads/nag ... ios-XI.pdf

I finally got the solution, downloaded advanced network interface status monitor plugin check_snmp_netint.pl

and worked around the parameters I have with SNMP V3.

Following is the command
$USER1$/check_snmp_netint.pl -H $HOSTADDRESS$ -l $ARG1$ -x $ARG2$ -L $ARG3$ -X $ARG2$ -f -q -n $ARG4$ $ARG5$

This plugin is pretty robust and allows to manage bandwidth as well as status of cisco gear interfaces.

Thank you so much for all the help

Following is the output:
[nagios@ns01ngmonp01 ~]$ /usr/local/nagios/libexec/check_snmp_netint.pl -H <host IP address> -l <username> -x <password> -L sha,aes -X <password -f -q -n GigabitEthernet1/0/48 -cisco=linkfault,show_portnames
Output: GigabitEthernet1/0/48:UP:(1 UP): OK |

Glad to hear!