S5-ETH-MULTISEG-TOPOLOGY-MIB :: s5EnMsTopBdgCompBdgMac1

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › S5-ETH-MULTISEG-TOPOLOGY-MIB › s5EnMsTopBdgCompBdgMac1

s5EnMsTopBdgCompBdgMac1

Module: S5-ETH-MULTISEG-TOPOLOGY-MIB

OID (symbolic): S5-ETH-MULTISEG-TOPOLOGY-MIB::s5EnMsTopBdgCompBdgMac1

OID (numeric): 1.3.6.1.4.1.45.1.6.13.3.1.1.12

Node type: OBJECT-TYPE

Type: MacAddress

Access: read-only

Description: The first MAC address of a companion bridge of the bridge that sent the topology message. The value is 00:00:00:00:00:00 for local bridges (since there is no companion bridge) and also when the companion MAC address is unknown for remote bridges.

What is s5EnMsTopBdgCompBdgMac1?

The first MAC address of this (deprecated) bridge's companion bridge; reads as all-zeros for local bridges (which have no companion) or when the companion's MAC is unknown for a remote bridge.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.45.1.6.13.3.1.1.12
snmpwalk -v2c -c public <target> S5-ETH-MULTISEG-TOPOLOGY-MIB::s5EnMsTopBdgCompBdgMac1

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.45.1.6.13.3.1.1.12.1
snmpget -v2c -c public <target> S5-ETH-MULTISEG-TOPOLOGY-MIB::s5EnMsTopBdgCompBdgMac1.1

Start monitoring Nortel BayStack 5000-series Ethernet chassis switch (multi-segment topology discovery) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the S5-ETH-MULTISEG-TOPOLOGY-MIB::s5EnMsTopBdgCompBdgMac1 OID value, configure state conditions and alerts, and monitor any Nortel BayStack 5000-series Ethernet chassis switch (multi-segment topology discovery) 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
1.3.6.1.4.1.45synopticsCMU-MIB
1.3.6.1.4.1.45.1productsSYNOPTICS-ROOT-MIB
1.3.6.1.4.1.45.1.6series5000SYNOPTICS-ROOT-MIB
1.3.6.1.4.1.45.1.6.13s5EnMsTopS5-ROOT-MIB
Numeric OIDNameModule
1.3.6.1.4.1.45.1.6.13.3s5EnMsTopBdgS5-ETH-MULTISEG-TOPOLOGY-MIB
1.3.6.1.4.1.45.1.6.13.3.1s5EnMsTopBdgTableS5-ETH-MULTISEG-TOPOLOGY-MIB
1.3.6.1.4.1.45.1.6.13.3.1.1s5EnMsTopBdgEntryS5-ETH-MULTISEG-TOPOLOGY-MIB
1.3.6.1.4.1.45.1.6.13.3.1.1.12s5EnMsTopBdgCompBdgMac1S5-ETH-MULTISEG-TOPOLOGY-MIB