Moby Dick Consolidated System Integration Plan

D0103v1.doc Version 1 6.7.2003
AR startup
Open COPS
connection
- Send CO message and
Receive CA message
Configuration
procedure
END
Figure 42: QoS Manager start-up
4.2.2.5.3 Internal Interface spec
Three elements constitute the QoS Manager, the PEP module, the QoS Attendant Module and the DSCP
table. PEP communicates with both QoS Attendant and DSCP table. No communication exists between
DSCP table and the QoS Attendant.
DSCP table is accessed only by the PEP and indeed it is just a variable in the PEP code. This variable is
an array, each element of the array being an authorized (DSCP, CoA) pair and its TTL.
QoSAttendant is part of the code of the PEP. It checks if a message comes from the FHO module and if
so, the PEP is awaken and start to process the received message.
4.2.2.5.4 State Machine
No.
Signal
0 Start
1 CA received
2 DEC(conf) received
3 Always
4 Signal from FHO module FAST_HANDOVER_INI
5 Always (or DEC from QoSB)
6 Signal from FHO module: START_QOSB_LISTEN
6b Unsolicited DEC(Context Transfer) message received
7 KA timer expires
8 KA received
9 Accounting timer expires
10 Always
11 Time out to check for new packets and packet with new (CoA,DSCP,DestAddress) found
12 Positive DEC(AF) received
13 Always
14 Negative DEC(AF) received
15 DEC(AF) with reconf. Flag set received
16 End
Table 6: State Machine
4.2.2.6 AAAC Attendant
The AAAC attendant acts as AAAC client and is responsible for communication between AAAC server
on behalf of the MT. This includes all security specific functionalities like key handling and network
access procedures, i.e., it deals with registration and setup.
This module must also deal with accounting issues. For that purpose it must have an interface with the
Metering module.
The Attendant comprises a module of software that implements the AAAC signalling and a set of routing
policies; some of these policies are set up as a consequence of the AAAC signalling.
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