---
oid: "1.3.6.1.4.1.637.54.1.25.2.1.5.1.2"
asn1-notation: "{iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprise(1) 637 ltt(54) tsdim(1) opticsimEthMib(25) opticsimEthNEMib(2) opticsimEthNEMibObject(1) opticsIMEthConfExtTable(5) opticsIMEthConfExtEntry(1) opticsIMEthConfExtlbInternal(2)}"
description: "opticsIMEthConfExtlbInternal OBJECT-TYPE "
last-modified: "2026-06-02"
tags: [oid-repository]
---

## OID: `1.3.6.1.4.1.637.54.1.25.2.1.5.1.2` (last updated: 2026-06-02)

```asn1
{iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprise(1) 637 ltt(54) tsdim(1) opticsimEthMib(25) opticsimEthNEMib(2) opticsimEthNEMibObject(1) opticsIMEthConfExtTable(5) opticsIMEthConfExtEntry(1) opticsIMEthConfExtlbInternal(2)}
```

### Description

```asn1
opticsIMEthConfExtlbInternal OBJECT-TYPE 
SYNTAX TruthValue 
MAX-ACCESS read-write 
STATUS current 
DESCRIPTION 
"This object specifies if the internal loopback is active or not. 
The default value is FALSE"

**Classification**: MIB object for network management

### Child OIDs

No child OID

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**Note to implementers:**: The OID repository is constantly updated but does not necessarily store the latest (or most accurate) version of this formal description. For an implementation, it is recommended to search the web for a more recent description. If this is the case, please update the above description.