RFC 3259 (rfc3259) - Page 2 of 39


A Message Bus for Local Coordination



Alternative Format: Original Text Document

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RFC 3259          A Message Bus for Local Coordination        April 2002


   6.    Transport  . . . . . . . . . . . . . . . . . . . . . . . . . 13
   6.1   Local Multicast/Broadcast  . . . . . . . . . . . . . . . . . 14
   6.1.1 Mbus multicast groups for IPv4 . . . . . . . . . . . . . . . 15
   6.1.2 Mbus multicast groups for IPv6 . . . . . . . . . . . . . . . 15
   6.1.3 Use of Broadcast . . . . . . . . . . . . . . . . . . . . . . 16
   6.1.4 Mbus UDP Port Number . . . . . . . . . . . . . . . . . . . . 16
   6.2   Directed Unicast . . . . . . . . . . . . . . . . . . . . . . 16
   7.    Reliability  . . . . . . . . . . . . . . . . . . . . . . . . 18
   8.    Awareness of other Entities  . . . . . . . . . . . . . . . . 20
   8.1   Hello Message Transmission Interval  . . . . . . . . . . . . 21
   8.1.1 Calculating the Interval for Hello Messages  . . . . . . . . 22
   8.1.2 Initialization of Values . . . . . . . . . . . . . . . . . . 23
   8.1.3 Adjusting the Hello Message Interval when the Number of
         Entities increases . . . . . . . . . . . . . . . . . . . . . 23
   8.1.4 Adjusting the Hello Message Interval when the Number of
         Entities decreases . . . . . . . . . . . . . . . . . . . . . 23
   8.1.5 Expiration of hello timers . . . . . . . . . . . . . . . . . 23
   8.2   Calculating the Timeout for Mbus Entities  . . . . . . . . . 24
   9.    Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 24
   9.1   mbus.hello . . . . . . . . . . . . . . . . . . . . . . . . . 24
   9.2   mbus.bye . . . . . . . . . . . . . . . . . . . . . . . . . . 25
   9.3   mbus.ping  . . . . . . . . . . . . . . . . . . . . . . . . . 25
   9.4   mbus.quit  . . . . . . . . . . . . . . . . . . . . . . . . . 26
   9.5   mbus.waiting . . . . . . . . . . . . . . . . . . . . . . . . 26
   9.6   mbus.go  . . . . . . . . . . . . . . . . . . . . . . . . . . 27
   10.   Constants  . . . . . . . . . . . . . . . . . . . . . . . . . 27
   11.   Mbus Security  . . . . . . . . . . . . . . . . . . . . . . . 28
   11.1  Security Model . . . . . . . . . . . . . . . . . . . . . . . 28
   11.2  Encryption . . . . . . . . . . . . . . . . . . . . . . . . . 28
   11.3  Message Authentication . . . . . . . . . . . . . . . . . . . 29
   11.4  Procedures for Senders and Receivers . . . . . . . . . . . . 30
   12.   Mbus Configuration . . . . . . . . . . . . . . . . . . . . . 31
   12.1  File based parameter storage . . . . . . . . . . . . . . . . 33
   12.2  Registry based parameter storage . . . . . . . . . . . . . . 34
   13.   Security Considerations  . . . . . . . . . . . . . . . . . . 34
   14.   IANA Considerations  . . . . . . . . . . . . . . . . . . . . 35
   15.   References . . . . . . . . . . . . . . . . . . . . . . . . . 35
   A.    About References . . . . . . . . . . . . . . . . . . . . . . 37
   B.    Limitations and Future Work  . . . . . . . . . . . . . . . . 37
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 38
   Full Copyright Statement . . . . . . . . . . . . . . . . . . . . . 39










Ott, et. al.                 Informational


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