Soft-state protocol

Interesting discussions of soft-state can be found in:
1. S. Raman and S. McCanne, "A Model, Analysis, and Protocol Framework for Soft State-based Communication," Proc. 1999 ACM SIGCOMM (Boston, MA, Aug. 1999)
2. P. Ji, Z. Ge, J. Kurose, and D. Towsley, "A Comparison of Hard-state and Soft-state Signaling Protocols, "Proc. 2003 ACM SIGCOMM (Karlsruhe, Germany, Aug. 2003)
3. J. Lui, V. Misra, and D. Rubenstein, "On the Robustness of Soft State Protocols," Proc. IEEE Int. Conference on Network Protocols (ICNP '04), pp. 50-60.

In a soft-state protocol, the state is removed via a timeout event if it is not explicitly refreshed.

Paper reading 關於 MANET與mobile ip整合

原文

Su-Jin Lee, Dae-In Choi, and Hyun-Kook Kahng, "Performance of Enhanced Mobile IP in MANET," The Joint International Conference on Optical Internet and Next Generation Network, 2006. COIN-NGNCON 2006. pp. 144-146, July 9-13, 2006.

該論文提出一種dynamic advertisement的方法，在MIP註冊過程中，也就是binding update時，採用AODV方式。文中提出兩種advertisements，一個稱為AASI (Agent Advertisement message with Short beacon Interval)，他的advertisement範圍為一個hop；另一個稱為AALI (Agent Advertisement message with Long beacon Interval)，有較長的registration lifetime與TTL。使用advertisement、可以轉送的solicitation(文章未提及solicitation可以被轉送)、以及active route就可以完成mobile IP的註冊binding工作。Routing方式是先採用類似AODV，發送e-RREQ，然後destination node replies e-RREP回source。

This paper proposed two kinds of advertisement (AASI Agent Advertisement message with Short beacon Interval and AALI Agent Advertisement message with Long beacon Interval) in foreign agent so that the AODV's scarce resources are not further burdened with MIP overhead and the required information is received on demand.

NEMO與階層式CA

今天在meeting裏，康康報告一篇MANET上做CA的論文。

此次報告由於背景問題說明不是清楚，再加上文章符號甚多，中間許多東西也不甚了解，以致報告起來聽者也無法得知太多資訊。

不過這裡提到hierarchy CA的問題，倒是陳老師提出可以在NEMO下做的題目。

憑證的發行單位是可以單位的hierarchy方式發行，此與NEMO architecture的hierarchy topology類似，應該可以做這方面的study。另外hierarchy CA與Trusted Computing有關，可能要進一步看相關資料才可以知道。