CDP Neighbor detection for devices with names longer than 40 characters
Hello, Due to campus naming conventions I have run into several switches with names longer than 40 characters. Normal operation and monitoring is not effected, however Observium does not recognize the neighbor.
I believe this is due to it wanting an exact name match, and since the name in observium may be 42 characters, it does not match to the truncated 40 character CDP name.
Is there a way we can either manually define a neighbor connection, or have the algorithms ignore any characters above the 40 limit? Perhaps by checking for IP address matching as well?
Thank You
Anthony Pisano | Network Design Engineer | IMSS anthony.pisano@caltech.edumailto:anthony.pisano@caltech.edu | (626) 395-4255tel:(626)%20395-4255 | Caltech | caltech.eduhttp://caltech.edu/
Hi Anthony,
can you provide snmp dump from an device with such neighbors? (relay privately with dump)
snmpbulkwalk -v2c -c <community> --hexOutputLength=0 -ObentxU <hostname> .1 > myagent.snmpwalk snmpbulkwalk -v2c -c <community> --hexOutputLength=0 -ObentxU <hostname> .1.3.6.1.4.1 >> myagent.snmpwalk
Pisano, Anthony D. via observium wrote on 11.06.2020 20:39:
Hello, Due to campus naming conventions I have run into several switches with names longer than 40 characters. Normal operation and monitoring is not effected, however Observium does not recognize the neighbor.
I believe this is due to it wanting an exact name match, and since the name in observium may be 42 characters, it does not match to the truncated 40 character CDP name.
Is there a way we can either manually define a neighbor connection, or have the algorithms ignore any characters above the 40 limit? Perhaps by checking for IP address matching as well?
Thank You
Anthony Pisano* | Network Design Engineer | IMSS anthony.pisano@caltech.edu mailto:anthony.pisano@caltech.edu | (626) 395-4255 tel:%28626%29%20395-4255 | Caltech | *caltech.edu http://caltech.edu/*
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participants (2)
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Mike Stupalov -
Pisano, Anthony D.