SNMP: Using value in trigger name

[barbaros]

Guys, I need some small advice.

I monitor my network switches in a standard way, using two status values:

([email protected] ~)# snmpwalk -v 2c -c XXXxxxXXX 192.168.2.254 ifAdminStatus.65
IF-MIB::ifAdminStatus.65 = INTEGER: up(1)

([email protected] ~)# snmpwalk -v 2c -c XXXxxxXXX 192.168.2.254 ifOperStatus.65
IF-MIB::ifOperStatus.65 = INTEGER: up(1)

I have standard triggers, with interface number in the description:

Link down on interface65 on {HOST.NAME}: {SWITCH-CORE-1.local:ifAdminStatus.65.last(0)}=1 and {SWITCH-CORE-1.local:ifOperStatus.65.last(0)}=2

The problem is that network admins are complaining that "interface65" tells them nothing. They lives in the world of aliases .

All of the interfaces have configured descriptions (aliases in this example):

([email protected] ~)# snmpwalk -v 2c -c XXXxxxXXX 192.168.2.254 ifAlias.65
IF-MIB::ifAlias.65 = STRING: ### Uplink To FIREWALL-CORE

So simple question is: is there any way to use one value (ifAlias in this example) in trigger name?

[BDiE8VNy]

When I have understood you right, then you could just add the item having the alias value to the trigger expression in a non-affecting way.

This is an example of mine, just to show the idea (pay attention to bold text):

Trigger name
Enabled port {#SNMPVALUE} ({ITEM.VALUE4}) in state: {ITEM.VALUE3}

Trigger expression (line breaks are not part of the expression)
{Template Brocade Fabric - Base:snmp.agent[SW-MIB::swFCPortPhyState.{#SNMPINDEX}].last()}>2&
{Template Brocade Fabric - Base:snmp.agent[SW-MIB::swFCPortLinkState.{#SNMPINDEX}].last()}#2&
{Template Brocade Fabric - Base:snmp.agent[SW-MIB::swFCPortOpStatus.{#SNMPINDEX}].last()}#1&
{Template Brocade Fabric - Base:snmp.agent[SW-MIB::swFCPortName.{#SNMPINDEX}].strlen()}>-1

Trigger description
Physical state is greater than noTransceiver (2)
AND Link state is not disabled (2)
AND Operational status is not online (1)
AND length of name is greater than -1

The latter allows to put the name into the trigger description

[chuonglh]

Maybe you can try this

Link down on interface65 on {HOST.NAME}:{ITEM.VALUE1} : {SWITCH-CORE-1.local:ifAlias.65.str(this_does_not_exist)}=0 and {SWITCH-CORE-1.local:ifAdminStatus.65.last(0)}=1 and {SWITCH-CORE-1.local:ifOperStatus.65.last(0)}=2

You might be interested in http://sysnet-adventures.blogspot.fr...interface.html

[Garry Zverev]

Thank you for answers.