es.tid.pce.pcep.messages

Class PCEPResponse

java.lang.Object

es.tid.pce.pcep.messages.PCEPMessage

es.tid.pce.pcep.messages.PCEPResponse

All Implemented Interfaces:

PCEPElement

public class PCEPResponse
extends PCEPMessage

PCEP Response Message (RFC 5440). 6.5. Path Computation Reply (PCRep) Message The PCEP Path Computation Reply message (also referred to as a PCRep message) is a PCEP message sent by a PCE to a requesting PCC in response to a previously received PCReq message. The Message-Type field of the PCEP common header for the PCRep message is set to 4. The bundling of multiple replies to a set of path computation requests within a single PCRep message is supported by PCEP. If a PCE receives non-synchronized path computation requests by means of one or more PCReq messages from a requesting PCC, it MAY decide to bundle the computed paths within a single PCRep message so as to reduce the control plane load. Note that the counter side of such an approach is the introduction of additional delays for some path computation requests of the set. Conversely, a PCE that receives multiple requests within the same PCReq message MAY decide to provide each computed path in separate PCRep messages or within the same PCRep message. A PCRep message may contain positive and negative replies. A PCRep message may contain a set of computed paths corresponding to either a single path computation request with load-balancing (see Section 7.16) or multiple path computation requests originated by a requesting PCC. The PCRep message may also contain multiple acceptable paths corresponding to the same request. The PCRep message MUST contain at least one RP object. For each reply that is bundled into a single PCReq message, an RP object MUST be included that contains a Request-ID-number identical to the one specified in the RP object carried in the corresponding PCReq message (see Section 7.4 for the definition of the RP object). If the path computation request can be satisfied (i.e., the PCE finds a set of paths that satisfy the set of constraints), the set of computed paths specified by means of Explicit Route Objects (EROs) is inserted in the PCRep message. The ERO is defined in Section 7.9. The situation where multiple computed paths are provided in a PCRep message is discussed in detail in Section 7.13. Furthermore, when a PCC requests the computation of a set of paths for a total amount of bandwidth by means of a LOAD-BALANCING object carried within a PCReq message, the ERO of each computed path may be followed by a BANDWIDTH object as discussed in section Section 7.16. If the path computation request cannot be satisfied, the PCRep message MUST include a NO-PATH object. The NO-PATH object (described in Section 7.5) may also contain other information (e.g, reasons for the path computation failure). The format of a PCRep message is as follows: ::= where: ::=[] ::= [] [] [] ::=[] ::= where: ::=[] [] [] --ESTADO DRAFT [] [] ::=[]

Author:

Oscar Gonzalez de Dios

Field Summary

Fields

Modifier and Type	Field and Description
LinkedList<Response>	ResponseList

Fields inherited from class es.tid.pce.pcep.messages.PCEPMessage

messageBytes

Constructor Summary

Constructors

Constructor and Description
PCEPResponse() Construct new PCEP Request from scratch
PCEPResponse(byte[] bytes)

Method Summary

Modifier and Type	Method and Description
void	addResponse(Response response)
void	decode() Decode the PCEP Response message
void	encode() Encodes the PCEP Response Message
boolean	equals(Object obj)
Response	getResponse(int index)
LinkedList<Response>	getResponseList()
int	hashCode()
void	setResponsetList(LinkedList<Response> responseList)
String	toString()

Methods inherited from class es.tid.pce.pcep.messages.PCEPMessage

encodeHeader, getBytes, getLength, getMessageType, getMessageType, getVer, setMessageLength, setMessageType

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

ResponseList

public LinkedList<Response> ResponseList

Constructor Detail

PCEPResponse

public PCEPResponse()

Construct new PCEP Request from scratch

PCEPResponse

public PCEPResponse(byte[] bytes)
             throws PCEPProtocolViolationException

Throws:

PCEPProtocolViolationException

Method Detail

addResponse

public void addResponse(Response response)

getResponse

public Response getResponse(int index)

getResponseList

public LinkedList<Response> getResponseList()

setResponsetList

public void setResponsetList(LinkedList<Response> responseList)

encode

public void encode()
            throws PCEPProtocolViolationException

Encodes the PCEP Response Message

Throws:

PCEPProtocolViolationException

decode

public void decode()
            throws PCEPProtocolViolationException

Decode the PCEP Response message

Throws:

PCEPProtocolViolationException

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class PCEPMessage

equals

public boolean equals(Object obj)

Overrides:

equals in class PCEPMessage