CORE-MIB :: corePortFirstChannel

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › CORE-MIB › corePortFirstChannel

corePortFirstChannel

Module: CORE-MIB

OID (symbolic): CORE-MIB::corePortFirstChannel

OID (numeric): 1.3.6.1.4.1.629.1.50.9.3.1.5

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-only

Description: For coreGigaBit(2) ports corePortFirstChannel=corePortLastChannel and is equal to its channel number

What is corePortFirstChannel?

This read-only INTEGER reports the first WDM channel carried by a port; for coreGigaBit ports it equals corePortLastChannel and is simply that port's own channel number. An admin uses it to see which wavelength channel or channels a given port carries. For example, an admin sees corePortFirstChannel=5 matching corePortLastChannel=5, confirming this is a single-channel Gigabit port operating on channel 5.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.629.1.50.9.3.1.5
snmpwalk -v2c -c public <target> CORE-MIB::corePortFirstChannel

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.629.1.50.9.3.1.5.1
snmpget -v2c -c public <target> CORE-MIB::corePortFirstChannel.1

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OID Breakdown

Upper-level ancestors (6 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
Numeric OIDNameModule
1.3.6.1.4.1.629nbaseCORE-MIB
1.3.6.1.4.1.629.1nbSwitchG1CORE-MIB
1.3.6.1.4.1.629.1.50nbSwitchG1IlCORE-MIB
1.3.6.1.4.1.629.1.50.9coreCORE-MIB
1.3.6.1.4.1.629.1.50.9.3corePortTableCORE-MIB
1.3.6.1.4.1.629.1.50.9.3.1corePortEntryCORE-MIB
1.3.6.1.4.1.629.1.50.9.3.1.5corePortFirstChannelCORE-MIB