---
oid: "0.0.17.3303.127.1.2.1.3.9.1.7"
asn1-notation: "{itu-t(0) recommendation(0) q(17) q3303(3303) hyphen(127) 1 pib(2) version2(1) rwServiceInfoClasses(3) 9 1 rwFilterSrcPrefixLength(7)}"
description: "rwFilterSrcPrefixLength OBJECT-TYPE"
classification: "MIB object for network management"
last-modified: "2024-11-05"
---

## OID : `0.0.17.3303.127.1.2.1.3.9.1.7`

```asn1
{itu-t(0) recommendation(0) q(17) q3303(3303) hyphen(127) 1 pib(2) version2(1) rwServiceInfoClasses(3) 9 1 rwFilterSrcPrefixLength(7)}
```

### Description

```asn1
rwFilterSrcPrefixLength OBJECT-TYPE
SYNTAX InetAddressPrefixLength
STATUS current
DESCRIPTION
"The length of a mask for the matching of the source IP address. This attribute is interpreted only if the InetAddressType is 'ipv4', 'ipv4z', 'ipv6' or 'ipv6z'.
Masks are constructed by setting bits in sequence from the most-significant bit downwards for RwFilterSrcPrefixLength bits length. All other bits in the mask, up to the number needed to fill the length of the address RwFilterDstAddr are cleared to zero. A zero bit in the mask then means that the corresponding bit in the address always matches.
In IPv4 addresses, a length of 0 indicates a match of any address; a length of 32 indicates a match of a single host address, and a length between 0 and 32 indicates the use of a CIDR Prefix. IPv6 is similar, except that prefix lengths range from 0..128."
REFERENCE "Textual Conventions for Internet Network Addresses. RFC 4001."
DEFVAL {0}
```

**Classification**: MIB object for network management

### Supplementary information

Automatically extracted from [ITUT-RwPib](http://www.itu.int/ITU-T/formal-language/itu-t/q/q3303.1/2012/ITUT-RwPib.html).

### Child OIDs

No child OID

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