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**dj_c00ler** · 15-02-2021, 15:17

Looks like there's no out-of-the-box solution so i did the following (example for Huawei PON device).

1. Create a Python script (obviously it could be done with anything else) /usr/share/zabbix/externalscripts/pon-onu-huawei.py and CHMOD it to 755:

Code:

#!/usr/bin/python3
#coding=UTF8

import sys,os,netsnmp

snmp_timeout = 30000 # in milliseconds
snmp_retries = 1

ponIfIndex = '.1.3.6.1.2.1.2.2.1.3'
ponIfIndexFilter = 250 # = PON interface ID
ponIfName = '.1.3.6.1.2.1.31.1.1.1.1'
onuIndex = '.1.3.6.1.4.1.2011.6.128.1.1.2.43.1.2' # onuIndex = ponIf
onuDescr = '.1.3.6.1.4.1.2011.6.128.1.1.2.43.1.9' # + onuIndex

ponIfList = {}
ponIfNames = {}
onuIndexList = {}
onuDescrList = {}

param_conn = str(sys.argv[1])
param_comm = "secret_public_ro"

ponIfIndex_var = netsnmp.VarList(ponIfIndex)
ponIfName_var = netsnmp.VarList(ponIfName)
onuIndex_var = netsnmp.VarList(onuIndex)
onuDescr_var = netsnmp.VarList(onuDescr)
netsnmp.snmpwalk(ponIfIndex_var, Version=2, DestHost=param_conn, Community=param_comm, Timeout=snmp_timeout, Retries=snmp_retries, UseNumeric=1)
netsnmp.snmpwalk(ponIfName_var, Version=2, DestHost=param_conn, Community=param_comm, Timeout=snmp_timeout, Retries=snmp_retries, UseNumeric=1)
netsnmp.snmpwalk(onuIndex_var, Version=2, DestHost=param_conn, Community=param_comm, Timeout=snmp_timeout, Retries=snmp_retries, UseNumeric=1)
netsnmp.snmpwalk(onuDescr_var, Version=2, DestHost=param_conn, Community=param_comm, Timeout=snmp_timeout, Retries=snmp_retries, UseNumeric=1)

for aaa in ponIfName_var:
    ponIfNames[aaa.iid] = aaa.val
for bbb in ponIfIndex_var:
    if int(bbb.val) == ponIfIndexFilter:
        ponIfList[bbb.iid]=ponIfNames[bbb.iid]
for ccc in onuDescr_var:
    onuDescrList[ccc.tag.replace(onuDescr+".","")+"."+ccc.iid] = ccc.val

total = len(onuIndex_var)
text = ""
processed = 0
if total > 0:
    for ddd in onuIndex_var:
        intf = ddd.tag.replace(onuIndex+".","")
        text += "{\"{#SNMPINDEX}\":\""+intf+"."+ddd.iid+"\",\"{#ON TIF}\":\""+ponIfNames[intf]+":"+ddd.iid+"\",\"{#ONTDESCR}\":\""+onuDescrLi st[intf+"."+ddd.iid]+"\"}"
       processed += 1
       if processed < total: text += ","

print ("["+text+"]")

and got json like:

Code:

[
{
"{#SNMPINDEX}": "4194305536.0",
"{#ONTIF}": "GPON 0/0/6:0",
"{#ONTDESCR}": "mydescr1"
},
{
"{#SNMPINDEX}": "4194305536.1",
"{#ONTIF}": "GPON 0/0/6:1",
"{#ONTDESCR}": "mydescr2"
},
{
"{#SNMPINDEX}": "4194305536.2",
"{#ONTIF}": "GPON 0/0/6:2",
"{#ONTDESCR}": "mydescr3"
},
{
"{#SNMPINDEX}": "4194305536.3",
"{#ONTIF}": "GPON 0/0/6:3",
"{#ONTDESCR}": "mydescr4"
},
...
{
"{#SNMPINDEX}": "4194307840.1",
"{#ONTIF}": "GPON 0/0/15:1",
"{#ONTDESCR}": "mydescr100500"
}
]

2. Made a discovery rule 'External check' with key 'pon-onu-huawei.py[{HOST.CONN}]'.
3. Everything else is simple - made an item/trigger/graph prototypes like 'ONT {#ONTIF} ({#ONTDESCR}): Traffic in' with 'net.ont.traffic.in[{#SNMPINDEX}]' key.
4. As some devices are very slow to SNMP respond i had to set Timeout=25 in /etc/zabbix/zabbix_server.conf along with increase number of StartPollers and StartPollers Unreachable.
5. Last thing to do is uncheck 'Use bulk requests' for such devices because i had rapidly growing queue and restart of Zabbix-server processes every 2-3 hours.

**jameskirsop** · 18-10-2021, 07:39

This looked really promising until I saw that you had hardcoded the {#SNMPINDEX} on line 10 of your script.

Did you ever get something to automatically discover and monitor the SUB ports of a low-level discovered interface?

What you're trying to achieve is similar (in terms of practical implementation) to what I'm trying to do here with Juniper Class of Service stats capture, where I need to do multi-dimensional discovery and monitoring.

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Best practices for multi-number SNMP with LLD? (modular network switches, PON, etc.)

Best practices for multi-number SNMP with LLD? (modular network switches, PON, etc.)

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