DECNET-PHIV-MIB :: phivSystemState

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › DECNET-PHIV-MIB › phivSystemState

phivSystemState

Module: DECNET-PHIV-MIB

OID (symbolic): DECNET-PHIV-MIB::phivSystemState

OID (numeric): 1.3.6.1.2.1.18.1.1

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: This represents the operational state of the executor node. The possible states are: ON Allows logical links. OFF Allows no new links, terminates existing links, and stops routing traffic through. SHUT Allows no new logical links, does not destroy existing logical links, and goes to the OFF state when all logical links are gone.

RESTRICTED Allows no new incoming logical links from other nodes.

NOTE: These values are incremented by one compared to the standard DECnet values in order to maintain compliance with RFC 1155).

What is phivSystemState?

Sets or reports the DECnet Phase IV executor node's operational state: on (allows logical links), off (blocks new links and tears down existing ones), shut (drains existing links then goes off), or restricted (blocks new incoming links only). An admin would set this to shut before a planned outage so active sessions finish gracefully, or to restricted to stop other nodes from initiating new connections while keeping current sessions alive. Note the enumerated values are offset by one from native DECnet numbering to stay compliant with RFC 1155.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.2.1.18.1.1
snmpwalk -v2c -c public <target> DECNET-PHIV-MIB::phivSystemState

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.2.1.18.1.1.1
snmpget -v2c -c public <target> DECNET-PHIV-MIB::phivSystemState.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.2.1.18.1.1.1 i <value>

Start monitoring Legacy DEC systems/routers (DECnet Phase IV) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the DECNET-PHIV-MIB::phivSystemState OID value, configure state conditions and alerts, and monitor any Legacy DEC systems/routers (DECnet Phase IV) 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
1.3.6.1.2mgmtAPERTUS-NPG-MIB
1.3.6.1.2.1mib_2AXON-MIB
1.3.6.1.2.1.18phivDECnet-iv
1.3.6.1.2.1.18.1phivSystemDECnet-iv
Numeric OIDNameModule
1.3.6.1.2.1.18.1.1phivSystemStateDECNET-PHIV-MIB