es.tid.rsvp.objects

Class SessionAttribute

java.lang.Object

es.tid.rsvp.objects.RSVPObject

es.tid.rsvp.objects.SessionAttribute

All Implemented Interfaces:

RSVPElement

Direct Known Subclasses:

SessionAttributeWOResourceAffinities, SessionAttributeWResourceAffinities

public abstract class SessionAttribute
extends RSVPObject

RFC 3209 RSVP-TE Session Attribute Object

The Session Attribute Class is 207. Two C_Types are defined, LSP_TUNNEL, C-Type = 7 and LSP_TUNNEL_RA, C-Type = 1. The LSP_TUNNEL_RA C-Type includes all the same fields as the LSP_TUNNEL C-Type. Additionally it carries resource affinity information. The formats are as follows: 4.7.1. Format without resource affinities SESSION_ATTRIBUTE class = 207, LSP_TUNNEL C-Type = 7 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 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Setup Prio | Holding Prio | Flags | Name Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | // Session Name (NULL padded display string) // | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Setup Priority The priority of the session with respect to taking resources, in the range of 0 to 7. The value 0 is the highest priority. The Setup Priority is used in deciding whether this session can preempt another session. Holding Priority The priority of the session with respect to holding resources, in the range of 0 to 7. The value 0 is the highest priority. Holding Priority is used in deciding whether this session can be preempted by another session. Flags 0x01 Local protection desired This flag permits transit routers to use a local repair mechanism which may result in violation of the explicit route object. When a fault is detected on an adjacent downstream link or node, a transit router can reroute traffic for fast service restoration. 0x02 Label recording desired This flag indicates that label information should be included when doing a route record. 0x04 SE Style desired This flag indicates that the tunnel ingress node may choose to reroute this tunnel without tearing it down. A tunnel egress node SHOULD use the SE Style when responding with a Resv message. Name Length The length of the display string before padding, in bytes. Session Name A null padded string of characters.

Field Summary

Fields inherited from class es.tid.rsvp.objects.RSVPObject

bytes, classNum, cType, length

Constructor Summary

Constructors

Constructor and Description
SessionAttribute()

Method Summary

Modifier and Type	Method and Description
abstract void	decode(byte[] bytes, int offset)
abstract void	encode() Generic method to encode an RSVP element

Methods inherited from class es.tid.rsvp.objects.RSVPObject

decodeHeader, encodeHeader, getBytes, getClassNum, getClassNum, getcType, getcType, getLength, getLength, setBytes, setClassNum, setcType, setLength

Methods inherited from class java.lang.Object

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

Constructor Detail

SessionAttribute

public SessionAttribute()

Method Detail

encode

public abstract void encode()
                     throws RSVPProtocolViolationException

Description copied from interface: RSVPElement

Generic method to encode an RSVP element

Specified by:

encode in interface RSVPElement

Specified by:

encode in class RSVPObject

Throws:

RSVPProtocolViolationException

decode

public abstract void decode(byte[] bytes,
                            int offset)
                     throws RSVPProtocolViolationException

Specified by:

decode in class RSVPObject

Throws:

RSVPProtocolViolationException