Cisco/SNMP Help (Hopefully)

[jonnjonzzn]

OK, I am actually getting information off of our Cisco load balancer. I am not an SNMP expert nor a Cisco expert so please jump in and add clarification to this thread if able. It seems as if I was never giving Zabbix the correct OID or key for the items I wanted to retrieve.

Here are links to similar discussions here in the forums:

http://www.zabbix.com/forum/showthread.php?t=7632&highlight=cisco

http://www.zabbix.com/forum/showthread.php?t=8070&highlight=cisco

I figured it out by a process similar to below:

First, download the MIBs from Cisco and place them whevever the rest of your MIBs are located. On Red Hat/CentOS that is: /usr/share/snmp/mibs

I am going to give an example for an item we are capturing which gives the number of TCP Connections to one of the clustered application servers behind it.
We grab this value for each of the app servers to verify our load is being properly balanced among the app cluster members. If you don't know what you're looking for start small like "conn" hoping to get back some connection related parameters and drill down from there. Eventually I find out I want this:

[root]# cd /usr/share/snmp/mibs

[root@wraith mibs]# grep -i 'currentconn' CISCO*
CISCO-ENHANCED-SLB-MIB.my:        cesServerFarmRserverCurrentConns   Counter64,
CISCO-ENHANCED-SLB-MIB.my:cesServerFarmRserverCurrentConns OBJECT-TYPE         
CISCO-ENHANCED-SLB-MIB.my:        cesServerFarmRserverCurrentConns,
CISCO-SLB-EXT-MIB.my:        cslbxRuleCurrentConnections               Gauge32,
CISCO-SLB-EXT-MIB.my:cslbxRuleCurrentConnections               OBJECT-TYPE
CISCO-SLB-EXT-MIB.my:                cslbxRuleCurrentConnections,

[root@wraith mibs]# snmptranslate -m ALL -On -IR cesServerFarmRserverCurrentConns 2>/dev/null
.1.3.6.1.4.1.9.9.470.1.1.3.1.14

[root@wraith mibs]# snmpwalk 192.168.1.5 -c public -v 2c .1.3.6.1.4.1.9.9.470.1.1.3.1.14 2> /dev/null
SNMPv2-SMI::enterprises.9.9.470.1.1.3.1.14.12.10.66.76.65.67.75.66.79.65.82.68.4.68.85.83.84.0 = Counter64: 21
SNMPv2-SMI::enterprises.9.9.470.1.1.3.1.14.12.10.66.76.65.67.75.66.79.65.82.68.5.67.72.65.76.75.0 = Counter64: 23
SNMPv2-SMI::enterprises.9.9.470.1.1.3.1.14.12.10.66.76.65.67.75.66.79.65.82.68.6.83.84.89.76.85.83.0 = Counter64: 47

[root@wraith mibs]# snmptranslate -m ALL -On -IR SNMPv2-SMI::enterprises.9.9.470.1.1.3.1.14.12.10.66.76.65.67.75.66.79.65.82.68.4.68.85.83.84.0 2>/dev/null
.1.3.6.1.4.1.9.9.470.1.1.3.1.14.12.10.66.76.65.67.75.66.79.65.82.68.4.68.85.83.84.0

OK, we have all we need.

The OID for this item is:

.1.3.6.1.4.1.9.9.470.1.1.3.1.14.12.10.66.76.65.67. 75.66.79.65.82.68.4.68.85.83.84.0

and the key is:

enterprises.9.9.470.1.1.3.1.14.12.10.66.76.65.67.7 5.66.79.65.82.68.4.68.85.83.84.0

Here is the associated zabbix item configuration:

<item type="4" key="enterprises.9.9.470.1.1.3.1.14.12.10.66.76.65.67.75.66.79.65.82.68.4.68.85.83.84.0" value_type="3">
	<description>Load Balancer Active TCP Connections - Dust</description>
	<delay>30</delay>
	<history>90</history>
	<trends>365</trends>
	<formula>1</formula>
	<snmp_community>public</snmp_community>
	<snmp_oid>.1.3.6.1.4.1.9.9.470.1.1.3.1.14.12.10.66.76.65.67.75.66.79.65.82.68.4.68.85.83.84.0</snmp_oid>
	<snmp_port>161</snmp_port>
</item>

Repeat this procedure for other items. To get a list of generic SNMP items do this:

[root]# snmpwalk 192.168.1.5 -c public -v 2c 2> /dev/null

and then repeat process above.

Example:

[root@wraith mibs]# snmpwalk 192.168.1.5 -c public -v 2c 2> /dev/null | grep -i octets
IF-MIB::ifInOctets.16777231 = Counter32: 2861642552
IF-MIB::ifInOctets.16777753 = Counter32: 1203117344
IF-MIB::ifInOctets.33554447 = Counter32: 0
IF-MIB::ifOutOctets.16777231 = Counter32: 388385046
IF-MIB::ifOutOctets.16777753 = Counter32: 2551396700
IF-MIB::ifOutOctets.33554447 = Counter32: 0
IP-MIB::ipSystemStatsInOctets.ipv4 = Counter32: 2586604045
IP-MIB::ipSystemStatsHCInOctets.ipv4 = Counter64: 3352661094925
IP-MIB::ipSystemStatsOutOctets.ipv4 = Counter32: 2194988618
IP-MIB::ipSystemStatsHCOutOctets.ipv4 = Counter64: 6489955914
IP-MIB::ipIfStatsInOctets.ipv4.16777231 = Counter32: 1650052595
IP-MIB::ipIfStatsInOctets.ipv4.16777753 = Counter32: 936551450
IP-MIB::ipIfStatsInOctets.ipv4.33554447 = Counter32: 0
IP-MIB::ipIfStatsHCInOctets.ipv4.16777231 = Counter64: 1221420764659
IP-MIB::ipIfStatsHCInOctets.ipv4.16777753 = Counter64: 2131240330266
IP-MIB::ipIfStatsHCInOctets.ipv4.33554447 = Counter64: 0
IP-MIB::ipIfStatsOutOctets.ipv4.16777231 = Counter32: 330506628
IP-MIB::ipIfStatsOutOctets.ipv4.16777753 = Counter32: 1864481990
IP-MIB::ipIfStatsOutOctets.ipv4.33554447 = Counter32: 0
IP-MIB::ipIfStatsHCOutOctets.ipv4.16777231 = Counter64: 4625473924
IP-MIB::ipIfStatsHCOutOctets.ipv4.16777753 = Counter64: 1864481990
IP-MIB::ipIfStatsHCOutOctets.ipv4.33554447 = Counter64: 0
IF-MIB::ifHCInOctets.16777231 = Counter64: 1222632354616
IF-MIB::ifHCInOctets.16777753 = Counter64: 2131506896160
IF-MIB::ifHCInOctets.33554447 = Counter64: 0
IF-MIB::ifHCOutOctets.16777231 = Counter64: 4683352342
IF-MIB::ifHCOutOctets.16777753 = Counter64: 2551396700
IF-MIB::ifHCOutOctets.33554447 = Counter64: 0

[root@wraith mibs]# snmptranslate -m ALL -On -IR IF-MIB::ifInOctets.16777231 2>/dev/null
.1.3.6.1.2.1.2.2.1.10.16777231

Now, we're ready to create item.

OID: .1.3.6.1.2.1.2.2.1.10.16777231
key: ifInOctets.16777231

-Mike