---
oid: "1.3.6.1.4.1.2281.3.2.3.7.1.7"
asn1-notation: "{iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprise(1) 2281 gnUnits(3) gnIDU(2) gnMux(3) gnHptCfgTable(7) gnHptCfgEntry(1) gnHptCfgTug3Structure1(7)}"
description: "gnHptCfgTug3Structure1 OBJECT-TYPE"
classification: "MIB object for network management"
last-modified: "2018-03-27"
---

## OID : `1.3.6.1.4.1.2281.3.2.3.7.1.7`

```asn1
{iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprise(1) 2281 gnUnits(3) gnIDU(2) gnMux(3) gnHptCfgTable(7) gnHptCfgEntry(1) gnHptCfgTug3Structure1(7)}
```

### Description

```asn1
gnHptCfgTug3Structure1 OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(4))
ACCESS read-write
STATUS mandatory
DESCRIPTION
"This field set the TUG-3 #1 structure: (hexadecimal number)
the lsb 4 bits set VC12=0 or VC3=1 structure to the TUG3 #1. (the K of the KLM index is 1)
for VC12 structure the next 21 bits (for SDH) or 28 bits (for SONET) set each of the VC12
to be blocked (bit is 0) or unblocked (bit is 1).
if it is VC3 only one more bit indicates if it is blocked (0) or unblocked (1).
if a VC12 is set to blocked (this is the default) the system will send TU-AIS in that VC12.
it it is unblocked it will be path-through or mapped to a E1/T1 port (according to the gnAccessCfgLowPathIndex).
the 21 or 28 bits order is as folwed (from lsb to msb direction): first 7 bits for M=1 (from KLM index),
the next 7 bits for M=2, the next for M=3, and the last (only for SONET) for M=4.
Example : SDH, VC12 strcture, blocked VCs: KLM=111,121 (M=1), 112,122 (M=2), 163,173 (M=3), unblocked VCs: all the other.
the value in bits will be: 0011111 1111100 1111100 0000, and in Hexadecimal: 0x7FE7C0. (so enter: 00 7F E7 C0)."
```

**Classification**: MIB object for network management

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