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Diffstat (limited to 'draft-gsenger-anycast-relay-00.txt')
| -rw-r--r-- | draft-gsenger-anycast-relay-00.txt | 130 |
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 + + + + + + + + + + + + + + + + + +Gsenger Expires September 2, 2007 [Page 6] + +Internet-Draft Anycast stream relaying March 2007 + + 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 + + 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 + +2.2.2. anycast light udp mode + + 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 + + The light UDP mode is neerly the same as the normal UDP mode, the + + + +Gsenger Expires September 2, 2007 [Page 7] + +Internet-Draft Anycast stream relaying March 2007 + + + 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. + +2.2.3. unicast tcp with anycast initialisation + +2.2.4. full anycast tcp + +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 @@ -332,7 +415,36 @@ Internet-Draft Anycast stream relaying March 2007 -Gsenger Expires September 2, 2007 [Page 6] + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +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] |