BayNetworks-IISIS-MIB :: wfIisisIfHelloMtuSize

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsBayNetworks-IISIS-MIBwfIisisIfHelloMtuSize

wfIisisIfHelloMtuSize

Module: BayNetworks-IISIS-MIB

OID (symbolic): BayNetworks-IISIS-MIB::wfIisisIfHelloMtuSize

OID (numeric): 1.3.6.1.4.1.18.3.5.3.2.8.5.1.12

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: Configure Hello MTU size per I-ISIS interface This parameter has the following values/meanings:

1 - Use the MTU specified by IP 2 - Use the MTU of ethernet, regardless of what IP says > 2 - Use this value as the actual MTU. If the value is smaller than what I-ISIS needs as a minimum then the mtu specified by IP is used. For example, 3 would never be used as an MTU.

What is wfIisisIfHelloMtuSize?

Configures the MTU used for Hello packets on this interface: a value of 1 (the default) uses the MTU specified by IP, 2 always uses the Ethernet MTU regardless of IP, and any value greater than 2 is used directly as the MTU, falling back to the IP-specified MTU if it is smaller than I-ISIS needs. For example, a value of 3 would never actually be used as an MTU per the source description.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.18.3.5.3.2.8.5.1.12
snmpwalk -v2c -c public <target> BayNetworks-IISIS-MIB::wfIisisIfHelloMtuSize

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.18.3.5.3.2.8.5.1.12.1
snmpget -v2c -c public <target> BayNetworks-IISIS-MIB::wfIisisIfHelloMtuSize.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.18.3.5.3.2.8.5.1.12.1 i <value>

Start monitoring Bay Networks/Nortel (Wellfleet BayRS) routers (legacy) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the BayNetworks-IISIS-MIB::wfIisisIfHelloMtuSize OID value, configure state conditions and alerts, and monitor any Bay Networks/Nortel (Wellfleet BayRS) routers (legacy) 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
1.3.6.1.4.1.18wellfleetWellfleet-COMMON-MIB
1.3.6.1.4.1.18.3wfSwSeries7Wellfleet-COMMON-MIB
1.3.6.1.4.1.18.3.5wfApplicationWellfleet-COMMON-MIB
1.3.6.1.4.1.18.3.5.3wfInternetWellfleet-COMMON-MIB
1.3.6.1.4.1.18.3.5.3.2wfIpRoutingWellfleet-COMMON-MIB
1.3.6.1.4.1.18.3.5.3.2.8wfIisisGroupWellfleet-COMMON-MIB
Numeric OIDNameModule
1.3.6.1.4.1.18.3.5.3.2.8.5wfIisisIfTableBayNetworks-IISIS-MIB
1.3.6.1.4.1.18.3.5.3.2.8.5.1wfIisisIfEntryBayNetworks-IISIS-MIB
1.3.6.1.4.1.18.3.5.3.2.8.5.1.12wfIisisIfHelloMtuSizeBayNetworks-IISIS-MIB