[opennms-discuss] OpenNMS 19 enlinkd topology missing links Juniper SRX troubleshooting

Cyrille Bollu

2017-06-20 06:32:44 UTC

Hi Steven,

Enlinkd can use other links discovery method (eg: LLDP, OSPF).

In my case (juniper switches + SRX4200) , enlinkd is configured as follow:

<?xml version="1.0" encoding="ISO-8859-1"?>
<enlinkd-configuration threads="5"
initial_sleep_time="60000"
rescan_interval="86400000"
use-cdp-discovery="true"
use-bridge-discovery="true"
use-lldp-discovery="true"
use-ospf-discovery="true"
use-isis-discovery="true"
/>

I can see "NodeDiscoveryBridge: run: collection execution failed, exiting"
in my logs but topology map is OK as far as I can see (not using it very
much though).

I remember though that topology map was not OK until I made sure LLDP data
was accessible via SNMP which required the following SNMPv3 configuration
in my case:

***@node0-fwlou> show configuration snmp v3 vacm access group opennms
default-context-prefix {
security-model usm {
security-level privacy {
read-view all;
}
}
}

***@node0-fwlou> show configuration snmp view all
oid .1;

{primary:node0}

(Before that the snmp view "all" was only showing .1.3.6 which don't
include the LLDP MIB)

HTH,

Cyrille

Post by Steven Vacaroaia
Hi,
My SRX3600 does not want to play nice with topology - no links
( enlinkd is using default config - no changes)
- make sure SNMP is enabled and provides info
- increase enlinkd.log to debug level and check for errors
collection execution failed, exiting
- check that IP MIBS are available
snmpwalk -v2c -c "password" 10.10.15.241 .1.3.6.1.2.1.4.20.1.3
IP-MIB::ipAdEntNetMask.10.10.15.241 = IpAddress: 255.255.255.0
IP-MIB::ipAdEntNetMask.10.10.15.242 = IpAddress: 255.255.255.0
IP-MIB::ipAdEntNetMask.10.10.31.10 = IpAddress: 255.255.255.248
IP-MIB::ipAdEntNetMask.10.10.31.33 = IpAddress: 255.255.255.224
- default juniper.xml datacollectionfile contains this
<systemDef name="Juniper Routers">
<sysoidMask>.1.3.6.1.4.1.2636.1.</sysoidMask>
<collect>
<includeGroup>juniper-router</includeGroup>
<includeGroup>mib2-X-interfaces</includeGroup>
<includeGroup>mib2-X-interfaces-pkts</includeGroup>
<includeGroup>ietf-bgp4-peer-stats</includeGroup>
</collect>
</systemDef>
I''ll appreciate any troubleshooting suggestions
Note
Juniper swtches are displaying links correctly
Thanks
Steven
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