Mobile transfer between networks with direct routing

[LSE1234]

Wireless and Mobile Networks - Mobile transfer between networks with direct routing
In this setting: // HENCE my textbook briefly says, but not clarify well
1)
Anchor Foreign Agent is the Foreign Agent in that foreign network where the mobile node was first found...
well,
when mobile node moves to a new foreign network, and again to another,...and so on Anchor Foreign Agent is fixed or moves and this, be the pre-the-new-Foreign Agent, Foreign Agent?

2)
Mostly in this case we have DIRECT COMMUNICATION between Correspondent Agent & new Foreign Agent OR, Correspondent Agent & Anchor Foreign Agent?

 

[QuantumQuest]

1) Let's first clarify what is Anchor Foreign Agent. In Mobile Internet Protocol (Mobile IP) , a Foreign Agent is a router serving as a mobility agent for a mobile node. It works in conjuction with a Home Agent (router on a mobile node's home network that holds information about the current location of a device). Foreign Agent is used for Internet traffic forwarding for a device connecting to the Internet from any other location than its home network. Now, Anchor Foreign Agent is the foreign agent in the first visited network. Data are always rooted first to the Anchor Foreign Agent. When mobile moves, New Foreign Agent arranges to have data forwarded from old Foreign Agent.

2) In the case of a new Foreign Agent we have direct communication between Correspondent Agent and Anchor Foreign Agent. New Foreign Agent has direct communication with Anchor Foreign Agent.