CTRON-COMMON-MIB :: fnbBypass

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCTRON-COMMON-MIBfnbBypass

fnbBypass

Module: CTRON-COMMON-MIB

OID (symbolic): CTRON-COMMON-MIB::fnbBypass

OID (numeric): 1.3.6.1.4.1.52.1.6.1.2.1.1.1.4

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: Denotes the bypass status of the current Token Ring board. Bypassed means the board is NOT attached to the FNB.

What is fnbBypass?

This read-write enumerated integer denotes whether the current Token Ring board is bypassed, meaning not attached to the FNB, with off(1) meaning not bypassed and on(2) meaning bypassed. An administrator uses this to intentionally isolate a Token Ring board from the shared backplane bus, for instance during maintenance or fault isolation. For example, before physically removing a Token Ring board for service, the admin sets this object to on(2) to cleanly bypass it from the FNB first.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.52.1.6.1.2.1.1.1.4
snmpwalk -v2c -c public <target> CTRON-COMMON-MIB::fnbBypass

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.52.1.6.1.2.1.1.1.4.1
snmpget -v2c -c public <target> CTRON-COMMON-MIB::fnbBypass.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.52.1.6.1.2.1.1.1.4.1 i <value>

Start monitoring Cabletron/Enterasys switch/router (shared definitions module) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CTRON-COMMON-MIB::fnbBypass OID value, configure state conditions and alerts, and monitor any Cabletron/Enterasys switch/router (shared definitions module) from a single console.

OID Breakdown

Upper-level ancestors (10 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.52cabletronCabletron-MIB
1.3.6.1.4.1.52.1commsDeviceCabletron-MIB
1.3.6.1.4.1.52.1.6subsystemCabletron-MIB
1.3.6.1.4.1.52.1.6.1mMACCabletron-MIB
Numeric OIDNameModule
1.3.6.1.4.1.52.1.6.1.2fnb2CTRON-COMMON-MIB
1.3.6.1.4.1.52.1.6.1.2.1fnbTRCTRON-COMMON-MIB
1.3.6.1.4.1.52.1.6.1.2.1.1fnbTRTableCTRON-COMMON-MIB
1.3.6.1.4.1.52.1.6.1.2.1.1.1fnbTREntryCTRON-COMMON-MIB
1.3.6.1.4.1.52.1.6.1.2.1.1.1.4fnbBypassCTRON-COMMON-MIB