CTRON-DECIV-ROUTER-MIB :: nwDecIVFwdIfMtu

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCTRON-DECIV-ROUTER-MIBnwDecIVFwdIfMtu

nwDecIVFwdIfMtu

Module: CTRON-DECIV-ROUTER-MIB

OID (symbolic): CTRON-DECIV-ROUTER-MIB::nwDecIVFwdIfMtu

OID (numeric): 1.3.6.1.4.1.52.4.2.2.2.3.3.2.2.2.1.1.1.6

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: Specifies the Maximum Transmission Unit (MTU) for DECnet packets on the router port for which the entry exists. This includes the DECnet header and data, but does not include framing.

What is nwDecIVFwdIfMtu?

nwDecIVFwdIfMtu is a read-write integer specifying the maximum transmission unit, in bytes, for DECnet packets sent on this router port, covering the DECnet header and data but not the underlying frame's own framing overhead. An admin adjusts this to match the DECnet payload size the port's underlying media and framing can actually carry without fragmentation problems. For example, lowering nwDecIVFwdIfMtu on a port using a WAN encapsulation with limited payload capacity keeps DECnet packets small enough to avoid being dropped or fragmented by that link.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.52.4.2.2.2.3.3.2.2.2.1.1.1.6
snmpwalk -v2c -c public <target> CTRON-DECIV-ROUTER-MIB::nwDecIVFwdIfMtu

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.52.4.2.2.2.3.3.2.2.2.1.1.1.6.1
snmpget -v2c -c public <target> CTRON-DECIV-ROUTER-MIB::nwDecIVFwdIfMtu.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.52.4.2.2.2.3.3.2.2.2.1.1.1.6.1 i <value>

Start monitoring Cabletron router/multiprotocol switch (legacy DECnet Phase IV) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CTRON-DECIV-ROUTER-MIB::nwDecIVFwdIfMtu OID value, configure state conditions and alerts, and monitor any Cabletron router/multiprotocol switch (legacy DECnet Phase IV) 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
1.3.6.1.4.1.52.4.2.2.2.3.3nwDecIVRouterCTRON-DECIV-ROUTER-MIB
1.3.6.1.4.1.52.4.2.2.2.3.3.2nwDecIVComponentsCTRON-DECIV-ROUTER-MIB
1.3.6.1.4.1.52.4.2.2.2.3.3.2.2nwDecIVForwardingCTRON-DECIV-ROUTER-MIB
1.3.6.1.4.1.52.4.2.2.2.3.3.2.2.2nwDecIVFwdInterfacesCTRON-DECIV-ROUTER-MIB
1.3.6.1.4.1.52.4.2.2.2.3.3.2.2.2.1nwDecIVFwdIfConfigCTRON-DECIV-ROUTER-MIB
1.3.6.1.4.1.52.4.2.2.2.3.3.2.2.2.1.1nwDecIVFwdIfTableCTRON-DECIV-ROUTER-MIB
1.3.6.1.4.1.52.4.2.2.2.3.3.2.2.2.1.1.1nwDecIVFwdIfEntryCTRON-DECIV-ROUTER-MIB
1.3.6.1.4.1.52.4.2.2.2.3.3.2.2.2.1.1.1.6nwDecIVFwdIfMtuCTRON-DECIV-ROUTER-MIB