CTRON-APPN-MIB :: nwAppnSysBlockNum

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCTRON-APPN-MIBnwAppnSysBlockNum

nwAppnSysBlockNum

Module: CTRON-APPN-MIB

OID (symbolic): CTRON-APPN-MIB::nwAppnSysBlockNum

OID (numeric): 1.3.6.1.4.1.52.4.2.2.2.3.5.2.1.1.2.25

Node type: OBJECT-TYPE

Type: DisplayString

Access: read-write

Description: This represents the 3 hexadecimal digit block number which precedes the 5 digit id number in the 8 digit node id used in XIDs and Alerts. The block number identifies the product type. Both the block number and id number combined, uniquely identify this instance of APPN Routing Services within the installation network.

What is nwAppnSysBlockNum?

This read-write 3-character string holds the hexadecimal block number that, combined with the id number, forms the 8-digit node id used in this node's XIDs and Alerts and identifies its product type. Getting this value wrong can cause XID exchanges or Alert reporting to misidentify the device's product type to adjacent nodes or NetView. An admin configuring this router for the first time would set the block number to match the product-type code assigned for this hardware family.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.52.4.2.2.2.3.5.2.1.1.2.25
snmpwalk -v2c -c public <target> CTRON-APPN-MIB::nwAppnSysBlockNum

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.52.4.2.2.2.3.5.2.1.1.2.25.1
snmpget -v2c -c public <target> CTRON-APPN-MIB::nwAppnSysBlockNum.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.52.4.2.2.2.3.5.2.1.1.2.25.1 s <value>

Start monitoring Cabletron/Enterasys router (IBM SNA/APPN) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CTRON-APPN-MIB::nwAppnSysBlockNum OID value, configure state conditions and alerts, and monitor any Cabletron/Enterasys router (IBM SNA/APPN) from a single console.

OID Breakdown

Upper-level ancestors (12 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
1.3.6.1.4.1.52cabletronCabletron-MIB
1.3.6.1.4.1.52.4mibsCTRON-AP3000-MIB
1.3.6.1.4.1.52.4.2ctronExpCTRON-MIB-NAMES
1.3.6.1.4.1.52.4.2.2ctronRouterExpROUTER-OIDS
1.3.6.1.4.1.52.4.2.2.2nwRouterROUTER-OIDS
1.3.6.1.4.1.52.4.2.2.2.3nwRtrProtoSuitesROUTER-OIDS
Numeric OIDNameModule
1.3.6.1.4.1.52.4.2.2.2.3.5nwAppnRouterCTRON-APPN-MIB
1.3.6.1.4.1.52.4.2.2.2.3.5.2nwAppnComponentsCTRON-APPN-MIB
1.3.6.1.4.1.52.4.2.2.2.3.5.2.1nwAppnSystemCTRON-APPN-MIB
1.3.6.1.4.1.52.4.2.2.2.3.5.2.1.1nwAppnSysConfigCTRON-APPN-MIB
1.3.6.1.4.1.52.4.2.2.2.3.5.2.1.1.2nwAppnSysCfgLocalNodeCTRON-APPN-MIB
1.3.6.1.4.1.52.4.2.2.2.3.5.2.1.1.2.25nwAppnSysBlockNumCTRON-APPN-MIB