COM21-HCXRX-MIB :: hcxUpstreamSerialNumber

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCOM21-HCXRX-MIBhcxUpstreamSerialNumber

hcxUpstreamSerialNumber

Module: COM21-HCXRX-MIB

OID (symbolic): COM21-HCXRX-MIB::hcxUpstreamSerialNumber

OID (numeric): 1.3.6.1.4.1.1141.2.33.1.1.15

Node type: OBJECT-TYPE

Type: DisplayString

Access: read-only

Description: contains the serial number of the RX card. This will be an empty string if card is missing.

What is hcxUpstreamSerialNumber?

This read-only DisplayString of up to 16 characters holds the RX card's serial number, returning an empty string when the card is missing from the slot. It gives an admin a way to track hardware inventory and warranty/RMA information for each installed card via SNMP rather than reading a physical label. For example, when opening an RMA case for a failed RX card, the admin records the value of hcxUpstreamSerialNumber pulled remotely before the card is shipped back.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.1141.2.33.1.1.15
snmpwalk -v2c -c public <target> COM21-HCXRX-MIB::hcxUpstreamSerialNumber

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.1141.2.33.1.1.15.1
snmpget -v2c -c public <target> COM21-HCXRX-MIB::hcxUpstreamSerialNumber.1

Start monitoring Com21 ComController HCX downstream RX card (legacy) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the COM21-HCXRX-MIB::hcxUpstreamSerialNumber OID value, configure state conditions and alerts, and monitor any Com21 ComController HCX downstream RX 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
1.3.6.1.4.1.1141.2.33com21HcxUpstrmUnitGroupCOM21-HCXRX-MIB
1.3.6.1.4.1.1141.2.33.1com21HcxUpstrmUnitTableCOM21-HCXRX-MIB
1.3.6.1.4.1.1141.2.33.1.1com21HcxUpstrmUnitEntryCOM21-HCXRX-MIB
1.3.6.1.4.1.1141.2.33.1.1.15hcxUpstreamSerialNumberCOM21-HCXRX-MIB