Moby Dick Consolidated System Integration Plan

D0103v1.doc Version 1 6.7.2003
User
Profile
Data
QBroker
QBrokerEngine
NetStatus
RouterInterface
COPSDriver
Linux Router
Figure 76 – COPSDriver as a PDP interface
COPS communication between AR and QoSBroker is made by the COPSApi referred before. The Api
implements a COPS-RSVP-like protocol, with the exception in the FHO message that is the only
unsolicited message the Api supports. This interface uses the change of Keep-Alive messages in order to
the network components to announce its running state to the network elements that they are connected.
4.4.3.1.2.4 Data format interchanged between AR and QoSBroker
BehaviourData: It describes the QoSManager queues parameters. This structure can be described:
- dscp_b;
- dest_addr;
- queue_type;
- behaviuor;
- borrow_flag;
- min_gred_queue;
- max_gred_queue;
- prob_gred_queue;
At QoSManager start-up time, the QoSManager requests the configuration from the QoSBroker. The
QoSBroker collects an array of BehaviourData from describing QoSManager queues information and
send them to QoSManager.
RD (Resource Description). It describes the resource that is being requested to the AR by a host. Such a
description has:
-Source address;
-Destination address;
-DSCP signalling code;
DSCP is the reference to the QoS profile wanted. With this information QoSBroker will analyse network
conditions and decide about accepting or rejecting that flow.
FHOData(Fast Handover data). It describes the FHO process being requested to the QoSBroker. This
structure has:
- oCoA ( the old CoA): the address in use by the MN that is making a FHO;
- nCoA ( the new CoA): the address that will be used by the MN after the FHO process;
- nAR ( new AR): the address of the router that will connect the MN after the FHO.
FHOServReserv (Fast Handover Service Reservation): is the fast handover registered service
description sent by the QoSBroker to the nAR after a FHO decision was taken. This data structures has:
- SourceAddress (Source address): is the source address of the registered service for the MN;
- DestAddress (Destination address): is the destiny address of the service registered to that MN;
- DSCP: is the DSCP of the regis tered service;
- PolicyBW (Policy Bandwidth): is bandwidth values send to nAR that is used for the data rate
parameter of the queue that is created to keep this service packets;
- PolicyBurst (Policy Burst): is the burst rate value that defines the burst rate of the queue that
AR will create in it interface to keep this service packets;
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