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Martijn Schmidt 49f206f58e Fix regression in VC hardware detection for JunOS (#9772)
PR #9546 has resulted in Platform being detected as
"Juniper Virtual Chassis Switch" when a set of devices
is stacked. Hence, no more possibility to see whether
it is for example an EX2300 or EX3400 virtual-chassis.

This commit falls back to using rewrite_junos_hardware()
if the "Juniper Virtual Chassis Switch" string is detected
in boxDescr, resulting in usable hardware data.

Caveat - it's possible to build a virtual-chassis of
multiple switch models, but only for higher end hardware:

https://www.juniper.net/documentation/en_US/junos/topics/concept/virtual-chassis-ex4200-overview.html#jd0e75

Example SNMP output:
mschmidt@nlrtm1-librenms1:~$ snmpwalk -v2c -cremoved -m JUNIPER-MIB -M /opt/librenms/mibs hostname jnxBoxDescr
JUNIPER-MIB::jnxBoxDescr.0 = STRING: Juniper Virtual Chassis Switch

Also reported previously via the community forums:
https://community.librenms.org/t/pr-9546-results-in-junos-platform-detection-quirks-in-combination-with-virtual-chassis/6537
2019-02-04 08:55:31 -06:00
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