# Configuración del IOS con snmp

Introducción

Cisco MIB files
SNMP Object Navigator

Obtener información del dispositivo

# cat devinfo.sh
#!/bin/bash

# $1 = Read-only community
# $2 = Cisco device IP address

swalk="snmpwalk -v1 -c "
oid_sysname=".1.3.6.1.2.1.1.5.0"
oid_sysuptime=".1.3.6.1.2.1.1.3.0"
oid_sysdescr=".1.3.6.1.2.1.1.1.0"
oid_syscontact=".1.3.6.1.2.1.1.4.0"
oid_syslocation=".1.3.6.1.2.1.1.6.0"
oid_iosversion=".1.3.6.1.4.1.9.9.25.1.1.1.2.5"
oid_iosfeatures=".1.3.6.1.4.1.9.9.25.1.1.1.2.4"
oid_avgbusy1=".1.3.6.1.4.1.9.2.1.57.0"
oid_avgbusy5=".1.3.6.1.4.1.9.2.1.58.0"
oid_freemem=".1.3.6.1.4.1.9.2.1.8.0"
oid_whyreload=".1.3.6.1.4.1.9.2.1.2.0"

echo "Hostname    = `$swalk $1 $2 $oid_sysname | cut -d' ' -f4`"
echo "Uptime      = `$swalk $1 $2 $oid_sysuptime | cut -d' ' -f5`"
echo "Description = `$swalk $1 $2 $oid_sysdescr | sed 's/^.*STRING: //'`"
echo "Contact     = `$swalk $1 $2 $oid_syscontact | sed 's/^.*STRING: //'`"
echo "Location    = `$swalk $1 $2 $oid_syslocation | sed 's/^.*STRING: //'`"
echo "CPU 1 min   = `$swalk $1 $2 $oid_avgbusy1 | cut -d' ' -f4`"
echo "CPU 5 min   = `$swalk $1 $2 $oid_avgbusy5 | cut -d' ' -f4`"
echo "Free mem    = $[`$swalk $1 $2 $oid_freemem | cut -d' ' -f4`/1048576] MB"
echo "Last reload = `$swalk $1 $2 $oid_whyreload | sed 's/^.*STRING: //'`"
# ./devinfo.sh rosnmpc 192.168.1.1

Subir y bajar la running-config

# cat getsetrun.sh
#!/bin/bash

# $1 = Read-write community
# $2 = Cisco device IP address
# $3 = TFTP server IP address
# $4 = Configuration file name
# $5 = Action (get|set)

sset="snmpset -v2c -c "
oid_protocol=". .666"
oid_source=".1.3.6.1.4.1.9.9.96.1.1.1.1.3.666"
oid_dest=".1.3.6.1.4.1.9.9.96.1.1.1.1.4.666"
oid_server=".1.3.6.1.4.1.9.9.96.1.1.1.1.5.666"
oid_name=".1.3.6.1.4.1.9.9.96.1.1.1.1.6.666"
oid_status=".1.3.6.1.4.1.9.9.96.1.1.1.1.14.666"

if [ "$5" == "get" ]
then
 src=4;dst=1
elif [ "$5" == "set" ]
then
 src=1;dst=4
else
 exit
fi

$sset $1 $2 $oid_protocol i 1
$sset $1 $2 $oid_source i $src
$sset $1 $2 $oid_dest i $dst
$sset $1 $2 $oid_server a $3
$sset $1 $2 $oid_name s $4
$sset $1 $2 $oid_status i 1
(sleep 10 && $sset $1 $2 $oid_status i 6 > /dev/null) &
# ./getsetrun.sh rwsnmpc 192.168.1.1 192.168.1.10 c2950-config get
# ./getsetrun.sh rwsnmpc 192.168.1.1 192.168.1.10 c2950-config set