HP-UX Mobile IPv6 A.01.01 Release Notes

What Is Included in HP-UX Mobile IPv6 A.01.01?

Chapter8

other and bypass the Home Agent. The Correspondent Node sends packets directly to the

Mobile Node’s Care-of Address, and the Mobile Node sends packets directly to the

Correspondent Node.

Return Routability Procedure

The return routability procedure provides reasonable proof to the Correspondent Node that it

can contact the Mobile Node through both the Home and Care-of Addresses; thereby,

protecting the Correspondent Node from attackers that send false Binding Update messages.

In this procedure, the Mobile Node exchanges messages with the Correspondent Node using

both the Mobile Node’s Home and Care-of Addresses and builds a shared key. The Mobile

Node uses this shared key to attach a cryptographic signature to the Binding Update

message, which the Correspondent Node authenticates to obtain the proof.

Dynamic Home Agent Address Discovery

With Dynamic Home Agent Address Discovery, a Mobile Node only needs a home network

prefix configured and it can dynamically find the address of a Home Agent on its home

network when it needs to register its Care-of Address.

Prefix Discovery

Prefix Discovery allows a Mobile Node to get network prefix information about its Home

Network and to configure its Home Address if needed. The Home Agent monitors prefix

information from Router Advertisement messages on the Home Network. The Mobile Node

can request prefix information by sending a Mobile Prefix Solicitation message to the Home

Agent.

Multi-Processor Scaling

HP designed and implemented HP-UX Mobile IPv6 for multi-processor scaling in

environments using high-end systems supporting a large number of Mobile Nodes. Scaling the

number of processors increases the number of Kernel-module instances processing IPv6

mobility message headers on the system.