EFDMIM-MIB :: efdmimRingUpstreamMac

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsEFDMIM-MIBefdmimRingUpstreamMac

efdmimRingUpstreamMac

Module: EFDMIM-MIB

OID (symbolic): EFDMIM-MIB::efdmimRingUpstreamMac

OID (numeric): 1.3.6.1.4.1.52.1.6.4.1.1.1.1

Node type: OBJECT-TYPE

Type: OCTET STRING

Access: read-only

Description: This is the 6 octet canonical representation of the upstream neighbor's address. The upstream neighbor is the last MAC to receive the token before this MAC. Please Note: SMT Rev 6.2 and under specify the unknown address as 00-00-00-00-00-00. SMT revisions after 6.2 specify the unknown address as 00-00-F8-00-00-00.

What is efdmimRingUpstreamMac?

Reports the 6-byte MAC address of this FDDI node's upstream neighbor, the last station to pass the token before it reaches this device, which an admin uses to trace ring wiring order; older SMT revisions (6.2 and earlier) represent an unknown neighbor as all-zeros while newer revisions use 00-00-F8-00-00-00.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.52.1.6.4.1.1.1.1
snmpwalk -v2c -c public <target> EFDMIM-MIB::efdmimRingUpstreamMac

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.52.1.6.4.1.1.1.1.1
snmpget -v2c -c public <target> EFDMIM-MIB::efdmimRingUpstreamMac.1

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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
1.3.6.1.4.1.52.1.6.4.1dlForceOnBootCTRON-COMMON-MIB
Numeric OIDNameModule
1.3.6.1.4.1.52.1.6.4nb55EFDMIM-MIB
1.3.6.1.4.1.52.1.6.4.1.1efdmimRingTableEFDMIM-MIB
1.3.6.1.4.1.52.1.6.4.1.1.1efdmimRingEntryEFDMIM-MIB
1.3.6.1.4.1.52.1.6.4.1.1.1.1efdmimRingUpstreamMacEFDMIM-MIB