---
oid: "1.3.6.1.4.1.8691.2.21.1.3.2.3"
asn1-notation: "{iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprise(1) 8691 nport(2) iaw5x50AIO(21) swMgmt(1) networkSetting(3) ethernetSetting(2) ethNetMask(3)}"
description: "ethNetMask OBJECT-TYPE"
classification: "MIB object for network management"
last-modified: "2022-10-14"
---

## OID : `1.3.6.1.4.1.8691.2.21.1.3.2.3`

```asn1
{iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprise(1) 8691 nport(2) iaw5x50AIO(21) swMgmt(1) networkSetting(3) ethernetSetting(2) ethNetMask(3)}
```

### Description

```asn1
ethNetMask OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"A subnet mask represents all of the network hosts
at one geographic location, in one building, or on
the same local area network. When a packet is sent
out over the network, the NPort IAW5x50A-IO series
device server will use the subnet mask to check
whether the TCP/IP host specified in the packet is
on the local network segment. If the address is on
the same network segment as the NPort IAW5x50A-IO
series device server, a connection is established
directly from the NPort IAW5x50A-IO series device
server. Otherwise, the connection is established
through the given default gateway."
```

**Classification**: MIB object for network management

### Child OIDs

No child OID

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