---
oid: "1.3.6.1.4.1.637.54.1.25.2.1.4.1.6"
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) opticsIMifMauExtTable(4) opticsIMifMauExtEntry(1) opticsIMifMauExtCrossoverState(6)}"
description: "opticsIMifMauExtCrossoverState OBJECT-TYPE "
last-modified: "2026-06-02"
tags: [oid-repository]
---

## OID: `1.3.6.1.4.1.637.54.1.25.2.1.4.1.6` (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) opticsIMifMauExtTable(4) opticsIMifMauExtEntry(1) opticsIMifMauExtCrossoverState(6)}
```

### Description

```asn1
opticsIMifMauExtCrossoverState OBJECT-TYPE 
SYNTAX INTEGER 
MAX-ACCESS read-only 
STATUS current 
DESCRIPTION 
"The opticsIMifMauExtCrossoverMode indicates, if possible, the positioning 
of trasmitter and receiver respect to the line: 
- unknown, with value equal to 1, if not identifiable 
- mdI, with value equal to 2, means tx and rx are as for DCE (e.g. Hub or 
switch) 
- mDIX, with value equal to 3, means they are reverted just as for DTE 
(e.g. PC)."

**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.