We have devices SRX firewall devices modeled in Spectrum that are having problems with communicating with snmp.
Release : Any
Component : Discovery and modeling
This is an issue with the SRX devices as described in Juniper Problem Report ID PR1616775 (attached) as follows:
This issue can be seen on SRX Series devices for SNMP poll queries and traps on multi routing-instance environment.
If the SNMP query ingresses SRX on one routing-instance while the polled interface exists in a different routing-instance, then the SNMPD will drop that SNMP query.
For example: the SNMP packet ingress on routing-instance A while the polled interface is part of routing-instance B.
This occurs due to kernel inserting incorrect routing-instance ID (B instead of A) in the SNMP packet before sending to SNMPD.
The issue is resolved in Junos releases 20.4R3-S2 and 22.1R1.