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 />
o DMHA kernel module (re-)loading (start and stop) functions<br />
o Utilization of a user-space process to read the appropriate configuration file and to write<br />
configuration data to the DMHA kernel module<br />
4.7 Home Agent Software Specification<br />
This document gives the software specification of the different components of the Home Agent (HA).<br />
There are no additional <strong>Moby</strong> <strong>Dick</strong> requirements to the Home Agent apart from the (standard) Mobile IP<br />
stack. However, for the sake of completeness. This section specifies the software structure of the Home<br />
Agent.<br />
4.7.1 Overview<br />
According to the current <strong>Moby</strong> <strong>Dick</strong> specifications, the one and only component of the Home Agent is<br />
the provision of (macro) mobility, as provided by Mobile IPv6 stack from MIPL<br />
(www.mipl.mediapoli.org ).<br />
Mobile NCP IPv6 module<br />
MIPv6<br />
Home Agent functionality<br />
Figure 94: Mobile IPv6 Module<br />
The Mobile IPv6 Home Agent acts as proxy for in its home network registered roaming Mobile Nodes.<br />
The detailed behaviour of this functionality will be detailed in the next chapter.<br />
4.7.2 Detailed description of the components<br />
This chapter gives a detailed description of the sub-blocks of each component, and their interactions with<br />
other components.<br />
4.7.2.1 Mobile IPv6 Module<br />
The Mobile IPv6 module is integrated into the IPv6 stack and has the following interactions.<br />
IPv6 NCP stack<br />
Mobile NCP IPv6 stack<br />
MIPv6<br />
Home Agent functionality<br />
Network NCP Device Driver<br />
Ethernet<br />
(or WVLAN<br />
or W-CDMA)<br />
Fi<br />
gure 95: Mobile Ipv6 Module<br />
The Mobile IPv6 stack in the Home Agent provides standard Home Agent functionality; i.e., the Home<br />
Agent acts as a proxy for roaming Mobile Nodes of its (home) network and delivers packets destined for<br />
this roaming Mobile Nodes to their current point of attachment via IP-in-IP encapsulation (i.e.,<br />
tunnelling). Therefore, the Home Agent always needs to be informed about the current location (i.e. Careof-Address<br />
CoA) of the Mobile Nodes, which are stored in a binding cache.<br />
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