COM21-HCXTX-MIB :: hcxDownstreamBootVersion

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › COM21-HCXTX-MIB › hcxDownstreamBootVersion

hcxDownstreamBootVersion

Module: COM21-HCXTX-MIB

OID (symbolic): COM21-HCXTX-MIB::hcxDownstreamBootVersion

OID (numeric): 1.3.6.1.4.1.1141.2.23.4

Node type: OBJECT-TYPE

Type: DisplayString

Access: read-only

Description: contains the version of the TX card boot ROM. An empty string if card not present.

What is hcxDownstreamBootVersion?

This read-only DisplayString (16 bytes), empty if no card is present, reports the boot ROM version of the TX card. An admin checks this to confirm boot code compatibility before attempting a firmware upgrade on that card. For example, an admin checks the boot version here before pushing new firmware to make sure the card's boot ROM supports the target image.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.1141.2.23.4
snmpwalk -v2c -c public <target> COM21-HCXTX-MIB::hcxDownstreamBootVersion

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.1141.2.23.4.1
snmpget -v2c -c public <target> COM21-HCXTX-MIB::hcxDownstreamBootVersion.1

Start monitoring Com21 ComController HCX upstream TX unit (legacy) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the COM21-HCXTX-MIB::hcxDownstreamBootVersion OID value, configure state conditions and alerts, and monitor any Com21 ComController HCX upstream TX unit (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
1.3.6.1.4.1.1141.2.23com21HcxDnstrmUnitGroupCOM21-HCXTX-MIB
1.3.6.1.4.1.1141.2.23.4hcxDownstreamBootVersionCOM21-HCXTX-MIB