Moby Dick Consolidated System Integration Plan
Moby Dick Consolidated System Integration Plan
Moby Dick Consolidated System Integration Plan
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D0103v1.doc Version 1 6.7.2003<br />
The Local Log Management transfers the logs generated by Integrated Loggers to the Auditing<br />
Framework.<br />
4.2.1.9 DSCP Marking Software (DMS)<br />
The goal of the DMS is to mark packets with a DiffServ Code Point (DSCP) reflecting the level of QoS<br />
requested by the corresponding stream. Packets are marked according filtering rules (i.e. policies) defined<br />
by the network administrator, in the user space.<br />
When a new packet is ready to be transmitted to the layer two, the DMS inspects its header and consults a<br />
DSCP Matching Table. This table contains a set of filters to apply on the information extracted from the<br />
header, and the values of the associated DSCPs. Then, if one of the filters matches perfectly with this<br />
information, the packet is marked with the value of the DSCP associated with this filter.<br />
4.2.2 Description of the different Components<br />
4.2.2.1 Network device drivers<br />
This is a standard WLAN driver. In <strong>Moby</strong> <strong>Dick</strong> the hostap driver (http://hostap.epitest.fi/), version 19-05,<br />
by Jouni Malinen will be used.<br />
The WLAN driver will be configured to work in ad-hoc mode, using a common SSID and a common<br />
frequency with other WLAN ARs in the <strong>Moby</strong> <strong>Dick</strong> network and with the MTs. This configuration, and<br />
the reasons behind it, is explained in detail in appendix A.<br />
Network device drivers<br />
WLAN<br />
Ethernet<br />
Figure 30: Network Device Driver<br />
The Network Device Drivers provide layer 2 connectivity to the AR. WLAN will be used in WLAN AR<br />
to provide WLAN access to visiting MT. Ethernet will be used to provide network access to visiting MTs.<br />
Also Ethernet will be used to connect the AR to the core network (perhaps crossing other routers). In case<br />
of TD-CDMA infrastructure these functionality will be placed at the RG.<br />
4.2.2.2 Enhanced IPv6 stack/IPSec/DiffServ packet Filter<br />
Enhanced IPv6<br />
Standard IPv6 stack<br />
IPSe<br />
Diffserv<br />
Packet filter<br />
Figure 31: Enhanced Ipv6 Stack<br />
The enhanced IPv6 stack will be based on the IPv6 stack of the linux kernel 2.4.16. Functionality that<br />
must be present:<br />
• Standard IPv6 functionality.<br />
• IPSec: for authentication of packets.<br />
• Diffserv and packet filter, that includes:<br />
o Filtering: all packets received must belong to a flow in the DSCP table or they must be<br />
signalling packets for network access procedures (a particular DSCP code) that must be<br />
given to upper layers. If not, they must be dropped.<br />
o Shaping: when sending packets, to control that flows adjust to agreed bandwidth.<br />
D0103v1.doc 46 / 168
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