Moby Dick Consolidated System Integration Plan

D0103v1.doc Version 1 6.7.2003
Router Interface
VirtualRouter
Engine
Router
List
Database
CLIDriver
COPSDriver
Cisco
Router
Linux Router
Figure 74 - VirtualRouter
4.4.3.1.2.2 CLIDriver
CLIDriver is the driver that will communicate with the routers using the Command Line Interface. It will
receive requests from the VirtualRouter and then forward them to the routers through a set of instructions
that are present in the database.
Router Interface
VirtualRouter
Engine
Router
List
Database
CLIDriver
Engine
CLI
Command
Cisco
Router
Router
Figure 75 - CLIDriver
When the Virtual router receives a message from a CLI router, it sends this message to the
appropriatedriver. CLIDriver check in this database how to format the message in routers CLI commands.
Then it will send the list of commands one by one to the router, making the message configuration.
4.4.3.1.2.3 COPSDriver
COPS protocol was specially designed to exchange network policy information between a network policy
decision point (PDP) and policy enforcement points. In this case the policy decision point is the broker
and the policy enforcement point is the router. When the router starts receiving a set of packets from a
user with some QoSProfile code, it will ask the QoSBroker to reserve resources to this particular flow.
After analysing the network conditions, the QoSBroker will send an answer that will be applied by the
router. In order to supply the QoSBroker with all needed information to judge about that reservation,
router and QoSBroker should exchange some messages with some data.
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