es.tid.ospf.ospfv2.lsa.tlv

Class OSPFTLV

java.lang.Object

es.tid.ospf.ospfv2.lsa.tlv.OSPFTLV

Direct Known Subclasses:

LinkTLV, RouterAddressTLV

public abstract class OSPFTLV
extends Object

Base class for OSPF TLVs, from RFC 3630 . RFC 3630 TE Extensions to OSPF Version 2 2.3.2. TLV Header The LSA payload consists of one or more nested Type/Length/Value (TLV) triplets for extensibility. The format of each TLV is: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Value... | . . . . . . +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ The Length field defines the length of the value portion in octets (thus a TLV with no value portion would have a length of zero). The TLV is padded to four-octet alignment; padding is not included in the length field (so a three octet value would have a length of three, but the total size of the TLV would be eight octets). Nested TLVs are also 32-bit aligned. Unrecognized types are ignored. This memo defines Types 1 and 2. See the IANA Considerations section for allocation of new Types.

Author:

ogondio

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	log Logger
protected byte[]	tlv_bytes Bytes of the TLV
protected int	TLVType Type of the OSPF TLV
protected int	TotalTLVLength Total length of the TLV (including type, length and padding)

Constructor Summary

Constructors

Constructor and Description
OSPFTLV()
OSPFTLV(byte[] bytes, int offset)

Method Summary

Modifier and Type	Method and Description
abstract void	encode()
protected void	encodeHeader()
byte[]	getTlv_bytes()
static int	getTLVLength(byte[] bytes, int offset)
int	getTLVType()
int	getTLVValueLength()
int	getTotalTLVLength()
static int	getTotalTLVLength(byte[] bytes, int offset)
static int	getType(byte[] bytes, int offset)
protected void	setTlv_bytes(byte[] tlv_bytes)
protected void	setTLVType(int tLVType)
protected void	setTLVValueLength(int TLVValueLength) Sets the lenght of the VALUE of the TLV.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

TLVType

protected int TLVType

Type of the OSPF TLV

TotalTLVLength

protected int TotalTLVLength

Total length of the TLV (including type, length and padding)

tlv_bytes

protected byte[] tlv_bytes

Bytes of the TLV

log

protected static final org.slf4j.Logger log

Logger

Constructor Detail

OSPFTLV

public OSPFTLV()

OSPFTLV

public OSPFTLV(byte[] bytes,
               int offset)

Parameters:

bytes -

offset -

Method Detail

encodeHeader

protected void encodeHeader()

getTLVValueLength

public int getTLVValueLength()

getTotalTLVLength

public int getTotalTLVLength()

getTotalTLVLength

public static int getTotalTLVLength(byte[] bytes,
                                    int offset)

getTLVLength

public static int getTLVLength(byte[] bytes,
                               int offset)

getType

public static int getType(byte[] bytes,
                          int offset)

getTLVType

public int getTLVType()

setTLVType

protected void setTLVType(int tLVType)

getTlv_bytes

public byte[] getTlv_bytes()

setTlv_bytes

protected void setTlv_bytes(byte[] tlv_bytes)

setTLVValueLength

protected void setTLVValueLength(int TLVValueLength)

Sets the lenght of the VALUE of the TLV. The total length is computed!!!

Parameters:

TLVValueLength -

encode

public abstract void encode()