org.onosproject.bgpio.protocol.ver4

Class BgpUpdateMsgVer4

java.lang.Object

org.onosproject.bgpio.protocol.ver4.BgpUpdateMsgVer4

All Implemented Interfaces:

BgpMessage, BgpUpdateMsg, Writeable

public class BgpUpdateMsgVer4
extends Object
implements BgpUpdateMsg

BGP Update Message: UPDATE messages are used to transfer routing information between BGP peers. The information in the UPDATE message is used by core to construct a graph

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BgpUpdateMsgVer4.Writer Writer class for writing BGP update message to channel buffer.

Field Summary

Fields

Modifier and Type	Field and Description
static int	BYTE_IN_BITS
static BgpHeader	DEFAULT_UPDATE_HEADER
protected static org.slf4j.Logger	log
static byte[]	marker
static int	MARKER_LENGTH
static int	MIN_LEN_AFTER_WITHDRW_ROUTES
static int	MINIMUM_COMMON_HEADER_LENGTH
static BgpType	MSG_TYPE
static int	PACKET_MINIMUM_LENGTH
static byte	PACKET_VERSION
static org.onosproject.bgpio.protocol.ver4.BgpUpdateMsgVer4.Reader	READER
static BgpUpdateMsgVer4.Writer	WRITER

Constructor Summary

Constructors

Constructor and Description
BgpUpdateMsgVer4(BgpHeader bgpHeader, List<org.onlab.packet.IpPrefix> withdrawnRoutes, BgpPathAttributes bgpPathAttributes, List<org.onlab.packet.IpPrefix> nlri) Constructor to initialize parameters for BGP Update message.

Method Summary

Modifier and Type	Method and Description
BgpPathAttributes	bgpPathAttributes() Returns path attributes in BGP Update Message.
BgpHeader	getHeader() Returns BGP Header of BGP Message.
BgpType	getType() Returns BGP Type of BGP Message.
BgpVersion	getVersion() Returns version of BGP Message.
List<org.onlab.packet.IpPrefix>	nlri() Returns NLRI list of prefix.
static LinkedList<org.onlab.packet.IpPrefix>	parseNlri(org.jboss.netty.buffer.ChannelBuffer cb) Parses NLRI from channel buffer.
static LinkedList<org.onlab.packet.IpPrefix>	parseWithdrawnRoutes(org.jboss.netty.buffer.ChannelBuffer cb) Parsing withdrawn routes from channel buffer.
String	toString()
List<org.onlab.packet.IpPrefix>	withdrawnRoutes() Returns withdrawn Routes.
void	writeTo(org.jboss.netty.buffer.ChannelBuffer channelBuffer) Writes byte streams of messages to channel buffer.

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final org.slf4j.Logger log

PACKET_VERSION

public static final byte PACKET_VERSION

See Also:

Constant Field Values

PACKET_MINIMUM_LENGTH

public static final int PACKET_MINIMUM_LENGTH

See Also:

Constant Field Values

MARKER_LENGTH

public static final int MARKER_LENGTH

See Also:

Constant Field Values

BYTE_IN_BITS

public static final int BYTE_IN_BITS

See Also:

Constant Field Values

MIN_LEN_AFTER_WITHDRW_ROUTES

public static final int MIN_LEN_AFTER_WITHDRW_ROUTES

See Also:

Constant Field Values

MINIMUM_COMMON_HEADER_LENGTH

public static final int MINIMUM_COMMON_HEADER_LENGTH

See Also:

Constant Field Values

MSG_TYPE

public static final BgpType MSG_TYPE

marker

public static byte[] marker

DEFAULT_UPDATE_HEADER

public static final BgpHeader DEFAULT_UPDATE_HEADER

READER

public static final org.onosproject.bgpio.protocol.ver4.BgpUpdateMsgVer4.Reader READER

WRITER

public static final BgpUpdateMsgVer4.Writer WRITER

Constructor Detail

BgpUpdateMsgVer4

public BgpUpdateMsgVer4(BgpHeader bgpHeader,
                        List<org.onlab.packet.IpPrefix> withdrawnRoutes,
                        BgpPathAttributes bgpPathAttributes,
                        List<org.onlab.packet.IpPrefix> nlri)

Constructor to initialize parameters for BGP Update message.

Parameters:

bgpHeader - in Update message

withdrawnRoutes - withdrawn routes

bgpPathAttributes - BGP Path attributes

nlri - Network Layer Reachability Information

Method Detail

parseNlri

public static LinkedList<org.onlab.packet.IpPrefix> parseNlri(org.jboss.netty.buffer.ChannelBuffer cb)
                                                       throws BgpParseException

Parses NLRI from channel buffer.

Parameters:

cb - channelBuffer

Returns:

list of IP Prefix

Throws:

BgpParseException - while parsing NLRI

parseWithdrawnRoutes

public static LinkedList<org.onlab.packet.IpPrefix> parseWithdrawnRoutes(org.jboss.netty.buffer.ChannelBuffer cb)
                                                                  throws BgpParseException

Parsing withdrawn routes from channel buffer.

Parameters:

cb - channelBuffer

Returns:

list of IP prefix

Throws:

BgpParseException - while parsing withdrawn routes

getVersion

public BgpVersion getVersion()

Description copied from interface: BgpMessage

Returns version of BGP Message.

Specified by:

getVersion in interface BgpMessage

Specified by:

getVersion in interface BgpUpdateMsg

Returns:

version of BGP Message

getType

public BgpType getType()

Description copied from interface: BgpMessage

Returns BGP Type of BGP Message.

Specified by:

getType in interface BgpMessage

Specified by:

getType in interface BgpUpdateMsg

Returns:

BGP Type of BGP Message

writeTo

public void writeTo(org.jboss.netty.buffer.ChannelBuffer channelBuffer)

Description copied from interface: Writeable

Writes byte streams of messages to channel buffer.

Specified by:

writeTo in interface BgpMessage

Specified by:

writeTo in interface BgpUpdateMsg

Specified by:

writeTo in interface Writeable

Parameters:

channelBuffer - channelBuffer

bgpPathAttributes

public BgpPathAttributes bgpPathAttributes()

Description copied from interface: BgpUpdateMsg

Returns path attributes in BGP Update Message.

Specified by:

bgpPathAttributes in interface BgpUpdateMsg

Returns:

path attributes in BGP Update Message

withdrawnRoutes

public List<org.onlab.packet.IpPrefix> withdrawnRoutes()

Description copied from interface: BgpUpdateMsg

Returns withdrawn Routes.

Specified by:

withdrawnRoutes in interface BgpUpdateMsg

Returns:

withdrawn Routes

nlri

public List<org.onlab.packet.IpPrefix> nlri()

Description copied from interface: BgpUpdateMsg

Returns NLRI list of prefix.

Specified by:

nlri in interface BgpUpdateMsg

Returns:

NLRI list of prefix

getHeader

public BgpHeader getHeader()

Description copied from interface: BgpMessage

Returns BGP Header of BGP Message.

Specified by:

getHeader in interface BgpMessage

Specified by:

getHeader in interface BgpUpdateMsg

Returns:

BGP Header of BGP Message

toString

public String toString()

Overrides:

toString in class Object