---
oid: "1.3.6.1.4.1.637.54.1.25.2.1.4.1.9"
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) opticsIMifMauExtSynchRole(9)}"
description: "opticsIMifMauExtSynchRole OBJECT-TYPE "
last-modified: "2026-06-02"
tags: [oid-repository]
---

## OID: `1.3.6.1.4.1.637.54.1.25.2.1.4.1.9` (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) opticsIMifMauExtSynchRole(9)}
```

### Description

```asn1
opticsIMifMauExtSynchRole OBJECT-TYPE 
SYNTAX INTEGER {notRelevant(0), master(1), slave(2), auto(3)} 
MAX-ACCESS read-write 
STATUS current 
DESCRIPTION 
"A value that uniquely identifies the synchronization role of the Ethernet 
interface (1000Base-T) advertised by the local auto-negotiation entity. 
The 'auto' value is not allowed in case the 
opticsIMifMauExtSynchOperationMode is set to 'synchronous' value."

**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.