transport modes

1 files changed, 121 insertions, 9 deletions

diff --git a/draft-gsenger-anycast-relay-00.txt b/draft-gsenger-anycast-relay-00.txt
index 5e8484f..b4c2615 100644
--- a/draft-gsenger-anycast-relay-00.txt
+++ b/draft-gsenger-anycast-relay-00.txt
@@ -315,13 +315,96 @@ Internet-Draft           Anycast stream relaying              March 2007
 
 2.2.  Transport modes
 
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+Gsenger                 Expires September 2, 2007               [Page 6]
+
+Internet-Draft           Anycast stream relaying              March 2007
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 2.2.1.  anycast udp mode
 
-2.2.2.  unicast tcp with anycast initialisation
+   An example of anytun used with udp transport
 
-2.2.3.  full anycast tcp
+             -----------                      -----------
+             |   RTP   |      ----------      |   RTP   |
+             -----------  ->  |server 1|  ->  -----------
+             |   UDP   |      ----------      |   UDP   |
+             -----------                      -----------
+   -----     |   IPv6  |      ----------      |   IPv6  |     -----
+   |   |  -> -----------  ->  |server 2|  ->  -----------  -> |   |
+   -----     |  anytun |      ----------      |  anytun |     -----
+   #####     -----------                      -----------     #####
+             |   UDP   |      ----------      |   UDP   |
+   client 1  -----------  ->  |server 3|  ->  -----------     client 2
+             |   IPv4  |      ----------      |   IPv4  |
+             -----------                      -----------
+             |   ...   |       anycast        |   ...   |
+
+                                 Figure 4
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+   In anycast udp mode the data between clients and anycast serveres is
+   carried by udp packets.  Packets are routed by the serveres from one
+   client to another.  Because udp is stateless no inforamtion has to be
+   syncronised
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+2.2.2.  anycast light udp mode
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+   An example of anytun used with udp transport
 
-2.2.3.1.  keep alive message request
+             -----------                      -----------
+             |   RTP   |      ----------      |   RTP   |
+             -----------  ->  |server 1|  ->  -----------
+             |   UDP   |      ----------      |   UDP   |
+             -----------                      -----------
+   -----     |   IPv6  |      ----------      |   IPv6  |     -----
+   |   |  -> -----------  ->  |server 2|  ->  -----------  -> |   |
+   -----     |  anytun |      ----------      |  anytun |     -----
+   #####     -----------                      -----------     #####
+             |lightUDP |      ----------      |lightUDP |
+   client 1  -----------  ->  |server 3|  ->  -----------     client 2
+             |   IPv4  |      ----------      |   IPv4  |
+             -----------                      -----------
+             |   ...   |       anycast        |   ...   |
+
+                                 Figure 5
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+   The light UDP mode is neerly the same as the normal UDP mode, the
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+Gsenger                 Expires September 2, 2007               [Page 7]
+
+Internet-Draft           Anycast stream relaying              March 2007
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+   only difference is, that the udp size is set to the udp header lenght
+   and not to the length of the full packet and therefor the checksum is
+   only calculated for the udo header itself.  So there is no error
+   correction or detection done on the payload.  This can be usefull if
+   realtime data is beeing transimittet or the tunneled protocol does
+   error correction/detection by itself.
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+2.2.3.  unicast tcp with anycast initialisation
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+2.2.4.  full anycast tcp
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+2.2.4.1.  keep alive message request
 
    Most NAT routers need a tcp connection to transmit some packets once
    in while to stay open.  In full anycast tcp mode anytun hast to
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-Gsenger                 Expires September 2, 2007               [Page 6]
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+Gsenger                 Expires September 2, 2007               [Page 8]
 
 Internet-Draft           Anycast stream relaying              March 2007
 
@@ -388,7 +500,7 @@ Internet-Draft           Anycast stream relaying              March 2007
 
 
 
-Gsenger                 Expires September 2, 2007               [Page 7]
+Gsenger                 Expires September 2, 2007               [Page 9]
 
 Internet-Draft           Anycast stream relaying              March 2007
 
@@ -444,7 +556,7 @@ Appendix A.  The appan
 
 
 
-Gsenger                 Expires September 2, 2007               [Page 8]
+Gsenger                 Expires September 2, 2007              [Page 10]
 
 Internet-Draft           Anycast stream relaying              March 2007
 
@@ -500,7 +612,7 @@ Internet-Draft           Anycast stream relaying              March 2007
 
 
 
-Gsenger                 Expires September 2, 2007               [Page 9]
+Gsenger                 Expires September 2, 2007              [Page 11]
 
 Internet-Draft           Anycast stream relaying              March 2007
 
@@ -556,7 +668,7 @@ Author's Address
 
 
 
-Gsenger                 Expires September 2, 2007              [Page 10]
+Gsenger                 Expires September 2, 2007              [Page 12]
 
 Internet-Draft           Anycast stream relaying              March 2007
 
@@ -612,5 +724,5 @@ Acknowledgment
 
 
 
-Gsenger                 Expires September 2, 2007              [Page 11]
+Gsenger                 Expires September 2, 2007              [Page 13]