340 |
SIP: Understanding the Session Initiation Protocol |
Table 15.4
HIP References
RFC 5201 HIP Base Protocol [10]
RFC 5202 ESP transport of HIP [13]
RFC 5203 HIP registration extension [14]
RFC 5204 HIP rendezvous extension [15]
RFC 5205 HIP DNS extension [16]
RFC 5206 HIP mobility and multihoming [17]
RFC 5207
HIP NAT traversal [18] (specification does not use hole punching and has limited utility)
15.7 Questions
Q15.1 List some P2P properties of SIP.
Q15.2 Explain how an overlay uses a DHT.
Q15.3 For the Chord overlay in Figure 15.4, fill in the missing entries in the finger tables of Tables 15.5 and 15.6.
Q15.4 Explain how HITs are self-certifying.
Q15.5 Why does the use of peer protocol require changes in the way a SIP URI is resolved?
Figure 15.4 Chord overlay for Question Q15.3.
Peer-to-Peer SIP |
341 |
Table 15.5
Chord Finger Table for Node 27 in Figure 15.4
|
|
|
Closest to |
k |
Node |
Actual Node |
|
|
|
|
|
0 |
20 |
+ 27 |
53 |
1 |
21 |
+ 27 |
53 |
2 |
22 |
+ 27 |
53 |
3 |
23 |
+ 27 |
53 |
4 |
24 |
+ 27 |
? |
5 |
25 |
+ 27 |
? |
6 |
26 |
+ 27 |
? |
7 |
27 |
+ 27 |
159 |
Table 15.6
Chord Finger Table for Node 180 in Figure 15.4
|
|
|
Closest to |
k |
Node |
Actual Node |
|
|
|
|
|
0 |
20 |
+ 180 |
192 |
1 |
21 |
+ 180 |
192 |
2 |
22 |
+ 180 |
? |
3 |
23 |
+ 180 |
? |
4 |
24 |
+ 180 |
202 |
5 |
25 |
+ 180 |
? |
6 |
26 |
+ 180 |
27 |
7 |
27 |
+ 180 |
? |
References
[1]Camarillo, G., “Peer-to-Peer (P2P) Architectures,” draft-iab-p2p-archs-01 (work in progress), April 2009.
[2]Rosenberg, J., H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley, and E. Schooler, “SIP: Session Initiation Protocol,” RFC 3261, June 2002.
[3]Mahy, R., R. Sparks, J. Rosenberg, D. Petrie, and A. Johnston, “A Call Control and MultiParty Usage Framework for the Session Initiation Protocol (SIP),” draft-ietf-sipping-cc- framework-11 (work in progress), March 2009.
[4]Sinnreich, H., A. Johnston, and E. Shim, “Simple SIP Usage Scenario for Applications in the Endpoints,” draft-sinnreich-sip-tools-07 (work in progress), June 2009.
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[5]Stoica, I., et al., “Chord: A Scalable Peer-to-Peer Lookup Service for Internet Applications,” ACM SIGCOMM 2001, San Diego, CA, August 2001, pp. 149-160.
[6]Jennings, C., et al., “Resource Location and Discovery (RELOAD) Base Protocol,” draft- ietf-p2psip-base-02 (work in progress), March 2009.
[7]Baset, S., H. Schulzrinne, and M. Matuszewski, “Peer-to-Peer Protocol (P2PP),” draft- baset-p2psip-p2pp-01 (work in progress), November 2007.
[8]http://www.ietf.org/html.charters/p2psip-charter.html.
[9]Jennings, C., et al., “A SIP Usage for RELOAD,” draft-ietf-p2psip-sip-01 (work in progress), March 2009.
[10]Moskowitz, R., et al., “Host Identity Protocol,” RFC 5201, April 2008.
[11]Nikander, P., J. Laganier, and F. Dupont, “An IPv6 Prefix for Overlay Routable Cryptographic Hash Identifiers (ORCHID),” RFC 4843, April 2007.
[12]Camarillo, G., et al., “HIP BONE: Host Identity Protocol (HIP) Based Overlay Networking Environment,” draft-ietf-hip-bone-01 (work in progress), March 2009.
[13]Jokela, P., R. Moskowitz, and P. Nikander, “Using the Encapsulating Security Payload (ESP) Transport Format with the Host Identity Protocol (HIP),” RFC 5202, April 2008.
[14]Laganier, J., T. Koponen, and L. Eggert, “Host Identity Protocol (HIP) Registration Extension,” RFC 5203, April 2008.
[15]Laganier, J., and L. Eggert, “Host Identity Protocol (HIP) Rendezvous Extension,” RFC 5204, April 2008.
[16]Nikander, P., and J. Laganier, “Host Identity Protocol (HIP) Domain Name System (DNS) Extensions,” RFC 5205, April 2008.
[17]Nikander, P., et al., “End-Host Mobility and Multihoming with the Host Identity Protocol,” RFC 5206, April 2008.
[18]Stiemerling, M., J. Quittek, and L. Eggert, “NAT and Firewall Traversal Issues of Host Identity Protocol (HIP) Communication,” RFC 5207, April 2008.
[19]Gurtov, A., Host Identity Protocol (HIP): Towards the Secure Mobile Internet, Wiley Series on Communications Networking & Distributed Systems, New York: John Wiley & Sons, 2008.