COM21-HCXOC3-MIB :: hcxOc3UnitShelfId

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCOM21-HCXOC3-MIBhcxOc3UnitShelfId

hcxOc3UnitShelfId

Module: COM21-HCXOC3-MIB

OID (symbolic): COM21-HCXOC3-MIB::hcxOc3UnitShelfId

OID (numeric): 1.3.6.1.4.1.1141.2.91.1.1.1

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-only

Description: contains the associated shelf id.

What is hcxOc3UnitShelfId?

This read-only integer, fixed at value 1, identifies the single chassis shelf the OC-3 card described in this row of the card-level table is installed in. It confirms to an administrator that OC-3 cards in this platform are only supported in shelf 1, unlike the two-shelf Ethernet and Common Controller cards. For example, an operator writing a monitoring script that also polls hcxEtherShelfId would need to account for this OC-3 table always reporting 1 rather than ever seeing a 2.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.1141.2.91.1.1.1
snmpwalk -v2c -c public <target> COM21-HCXOC3-MIB::hcxOc3UnitShelfId

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.1141.2.91.1.1.1.1
snmpget -v2c -c public <target> COM21-HCXOC3-MIB::hcxOc3UnitShelfId.1

Start monitoring Com21 ComController HCX OC-3 ATM uplink card (legacy) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the COM21-HCXOC3-MIB::hcxOc3UnitShelfId OID value, configure state conditions and alerts, and monitor any Com21 ComController HCX OC-3 ATM uplink card (legacy) from a single console.

OID Breakdown

Upper-level ancestors (8 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
1.3.6.1.4.1.1141com21COM21-HCX-MIB
1.3.6.1.4.1.1141.2com21HcxCOM21-HCX-MIB
Numeric OIDNameModule
1.3.6.1.4.1.1141.2.91com21HcxOc3UnitGroupCOM21-HCXOC3-MIB
1.3.6.1.4.1.1141.2.91.1com21HcxOc3UnitTableCOM21-HCXOC3-MIB
1.3.6.1.4.1.1141.2.91.1.1com21HcxOc3UnitEntryCOM21-HCXOC3-MIB
1.3.6.1.4.1.1141.2.91.1.1.1hcxOc3UnitShelfIdCOM21-HCXOC3-MIB