Monitoring network interfaces

[MarcoUK]

Hi,
I'm trying to migrate the monitoring interface from OPSview to Zabbix.

I need to monitoring network usage for the networks in0 and out0:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet xx.xx.xx.xx/32 brd xx.xx.xx.xx scope global lo:bgp
valid_lft forever preferred_lft forever
2: in0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether xx:xx:xx:Xx:xx:xx brd ff:ff:ff:ff:ff:ff
inet 192.168.10.2/30 brd 192.168.10.3 scope global in0
valid_lft forever preferred_lft forever
3: out0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether xx:xx:xx:Xx:xx:xx brd ff:ff:ff:ff:ff:ff
inet 192.168.10.6/30 brd 192.168.10.7 scope global out0
valid_lft forever preferred_lft forever
4: mgmt0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether xx:xx:xx:Xx:xx:xx brd ff:ff:ff:ff:ff:ff
inet 192.168.10.10/30 brd 192.168.10.11 scope global mgmt0
valid_lft forever preferred_lft forever
5: eth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 0c:c4:7a:b2:31:e7 brd ff:ff:ff:ff:ff:ff
6: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN group default
link/ether xx:xx:xx:Xx:xx:xx brd ff:ff:ff:ff:ff:ff

In OPSview I have this check:

check_sns_stats -r myservername.mydomain.com/interface-in0/if_octets -s rx --maxe 30000000

I tried to configure in Zabbix in this way:

Name: interface_in0
Type: SNMP agentKey: interface_in0
SNMP OID: IF-MIB::ifInOctets.0
Type of information: Numeric (float)
Host interface: 192.168.10.10:161

my expression in the trigger is:

({host-servers:interface_in0.avg(1s)}) > 30000000

But I receive the error:

No Such Instance currently exists at this OID

and

Cannot evaluate expression: "Cannot evaluate function "hawkeye-co.bllon.isp.sky.com:interface_in0.avg(1s)": item is not supported."

How can I fix it?

[Atsushi]

Try use the snmpwalk command to check if the value can be obtained with the specified OID.
ex.

snmpwalk -v 2c -c public <IP or Hostname> IF-MIB::ifInOctets

[MarcoUK]

Hi,
thanks for the reply.

From which server I need to run this command? From the Zabbix server or the monitored server?

[MarcoUK]

These are my output:

$ snmpwalk -v 2c -c public 192.168.10.10 IF-MIB::ifInOctets
IF-MIB::ifInOctets.1 = Counter32: 119088285
IF-MIB::ifInOctets.2 = Counter32: 887955173
IF-MIB::ifInOctets.3 = Counter32: 77958608
IF-MIB::ifInOctets.4 = Counter32: 1871342285
IF-MIB::ifInOctets.5 = Counter32: 0
IF-MIB::ifInOctets.6 = Counter32: 0
$ snmpwalk -v 2c -c public 192.168.10.10 IF-MIB::ifOutOctets
IF-MIB::ifOutOctets.1 = Counter32: 119088285
IF-MIB::ifOutOctets.2 = Counter32: 364224
IF-MIB::ifOutOctets.3 = Counter32: 1318454447
IF-MIB::ifOutOctets.4 = Counter32: 3905322101
IF-MIB::ifOutOctets.5 = Counter32: 0
IF-MIB::ifOutOctets.6 = Counter32: 0

What are for in0 and what are for out0 interface?

Is it correct the expression in my trigger?

({host-servers:interface_in0.avg(1s)}) > 30000000

[Atsushi]

Try check interface name.

snmpwalk -v 2c -c public <IP or Hostname> .1.3.6.1.2.1.31.1.1.1.1

The last number in the OID is the index value. If you add the index value to the end of the OID, you can get the value of IF-MIB::ifInOctets for that interface.
ex.

snmpwalk -v 2c -c public <IP or Hostname> IF-MIB::ifInOctets.1

[MarcoUK]

Thanks for the reply, it works.

But in my trigger how can check that the value is not > 30000000 for each 1 second?

[Hamardaban]

I think it will be useful for you to read this

https://www.zabbix.com/documentation/current/manual/config/items/itemtypes/snmp/dynamicindex