ZYXEL-IF-LOOPBACK-MIB :: zyIfLoopbackMask

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › ZYXEL-IF-LOOPBACK-MIB › zyIfLoopbackMask

zyIfLoopbackMask

Module: ZYXEL-IF-LOOPBACK-MIB

OID (symbolic): ZYXEL-IF-LOOPBACK-MIB::zyIfLoopbackMask

OID (numeric): 1.3.6.1.4.1.890.1.15.3.28.1.2.1.4

Node type: OBJECT-TYPE

Type: IpAddress

Access: read-write

Description: The subnet mask of an IP routing domain that is associated to a loopback interface.

What is zyIfLoopbackMask?

This read-write object holds the subnet mask of the IP routing domain associated with this loopback interface. Admins configure this alongside zyIfLoopbackIpAddress to fully define the loopback's addressing, though loopbacks are typically assigned a host mask since they represent a single logical address. Setting zyIfLoopbackMask to 255.255.255.255 gives the loopback a host-only /32 mask, the typical configuration for a router-ID style loopback.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.890.1.15.3.28.1.2.1.4
snmpwalk -v2c -c public <target> ZYXEL-IF-LOOPBACK-MIB::zyIfLoopbackMask

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.890.1.15.3.28.1.2.1.4.1
snmpget -v2c -c public <target> ZYXEL-IF-LOOPBACK-MIB::zyIfLoopbackMask.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.890.1.15.3.28.1.2.1.4.1 a <value>

Start monitoring ZyXEL router/Layer 3 switch (loopback-interface creation/address/admin-state config status) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the ZYXEL-IF-LOOPBACK-MIB::zyIfLoopbackMask OID value, configure state conditions and alerts, and monitor any ZyXEL router/Layer 3 switch (loopback-interface creation/address/admin-state config status) from a single console.

OID Breakdown

Upper-level ancestors (10 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
1.3.6.1.4.1.890zyxelIES5206-MIB
1.3.6.1.4.1.890.1productsIES5206-MIB
1.3.6.1.4.1.890.1.15nwa1100nhNWA1100-NH
1.3.6.1.4.1.890.1.15.3esMgmtNWA1100-NH
Numeric OIDNameModule
1.3.6.1.4.1.890.1.15.3.28zyxelIfLoopbackZYXEL-IF-LOOPBACK-MIB
1.3.6.1.4.1.890.1.15.3.28.1zyxelIfLoopbackSetupZYXEL-IF-LOOPBACK-MIB
1.3.6.1.4.1.890.1.15.3.28.1.2zyxelIfLoopbackTableZYXEL-IF-LOOPBACK-MIB
1.3.6.1.4.1.890.1.15.3.28.1.2.1zyxelIfLoopbackEntryZYXEL-IF-LOOPBACK-MIB
1.3.6.1.4.1.890.1.15.3.28.1.2.1.4zyIfLoopbackMaskZYXEL-IF-LOOPBACK-MIB