Install SNMP MIBs on Ubuntu and add in Cisco MIBs
apt install snmp snmp-mibs-downloader
download-mibs
# Test MIB path, should fail this time
snmpget -c public -v2c localhost CISCO-REMOTE-ACCESS-MONITOR-MIB::crasIPSecNumSessions.0
cd /opt/
git clone https://github.com/cisco/cisco-mibs.git
ln -s /opt/cisco-mibs/v2 /usr/share/snmp/mibs/cisco
echo "mibdirs /usr/share/snmp/mibs:/usr/share/snmp/mibs/iana:/usr/share/snmp/mibs/ietf:/usr/share/snmp/mibs/cisco" >> /etc/snmp/snmp.conf
# Test MIB path again, should not throw MIB lookup errors
snmpget -c public -v2c localhost CISCO-REMOTE-ACCESS-MONITOR-MIB::crasIPSecNumSessions.0