rfc3258.txt

bind 9.3结合mysql数据库

4.2 Decreased Risks

   The increase in number of physical servers reduces the likelihood
   that a denial-of-service attack will take out a significant portion
   of the DNS infrastructure.  The increase in servers also reduces the
   effect of machine crashes, fiber cuts, and localized disasters by
   reducing the number of users dependent on a specific machine.

5. Acknowledgments

   Masataka Ohta, Bill Manning, Randy Bush, Chris Yarnell, Ray Plzak,
   Mark Andrews, Robert Elz, Geoff Huston, Bill Norton, Akira Kato,
   Suzanne Woolf, Bernard Aboba, Casey Ajalat, and Gunnar Lindberg all
   provided input and commentary on this work.  The editor wishes to
   remember in particular the contribution of the late Scott Tucker,
   whose extensive systems experience and plain common sense both
   contributed greatly to the editor's own deployment experience and are
   missed by all who knew him.








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6. References

   [SECONDARY] Elz, R., Bush, R., Bradner, S. and M. Patton, "Selection
               and Operation of Secondary DNS Servers", BCP 16, RFC
               2182, July 1997.

   [ROOT]      Bush, R., Karrenberg, D., Kosters, M. and R. Plzak, "Root
               Name Server Operational Requirements", BCP 40, RFC 2870,
               June 2000.

   [ANYCAST]   Patridge, C., Mendez, T. and W. Milliken, "Host
               Anycasting Service", RFC 1546, November 1993.







































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Appendix A.

       __________________
Peer 1-|                |
Peer 2-|                |
Peer 3-|     Switch     |
Transit|                |  _________                   _________
etc    |                |--|Router1|---|----|----------|Router2|---WAN-|
       |                |  ---------   |    |          ---------       |
       |                |              |    |                          |
       |                |              |    |                          |
       ------------------            [NTP] [DNS]                       |
                                                                       |
                                                                       |
                                                                       |
                                                                       |
       __________________                                              |
Peer 1-|                |                                              |
Peer 2-|                |                                              |
Peer 3-|     Switch     |                                              |
Transit|                |  _________                   _________       |
etc    |                |--|Router3|---|----|----------|Router4|---WAN-|
       |                |  ---------   |    |          ---------       |
       |                |              |    |                          |
       |                |              |    |                          |
       ------------------            [NTP] [DNS]                       |
                                                                       |
                                                                       |
                                                                       |
                                                                       |
       __________________                                              |
Peer 1-|                |                                              |
Peer 2-|                |                                              |
Peer 3-|     Switch     |                                              |
Transit|                |  _________                   _________       |
etc    |                |--|Router5|---|----|----------|Router6|---WAN-|
       |                |  ---------   |    |          ---------       |
       |                |              |    |                          |
       |                |              |    |                          |
       ------------------            [NTP] [DNS]                       |
                                                                       |
                                                                       |
                                                                       |








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                                                                       |
       __________________                                              |
Peer 1-|                |                                              |
Peer 2-|                |                                              |
Peer 3-|     Switch     |                                              |
Transit|                |  _________                   _________       |
etc    |                |--|Router7|---|----|----------|Router8|---WAN-|
       |                |  ---------   |    |          ---------
       |                |              |    |
       |                |              |    |
       ------------------            [NTP] [DNS]








































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RFC 3258        Distributing Authoritative Name Servers       April 2002


7. Editor's Address

   Ted Hardie
   Nominum, Inc.
   2385 Bay Road.
   Redwood City, CA 94063

   Phone: [phone]
   EMail: [e-mail]










































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8.  Full Copyright Statement

   Copyright (C) The Internet Society (2002).  All Rights Reserved.

   This document and translations of it may be copied and furnished to
   others, and derivative works that comment on or otherwise explain it
   or assist in its implementation may be prepared, copied, published
   and distributed, in whole or in part, without restriction of any
   kind, provided that the above copyright notice and this paragraph are
   included on all such copies and derivative works.  However, this
   document itself may not be modified in any way, such as by removing
   the copyright notice or references to the Internet Society or other
   Internet organizations, except as needed for the purpose of
   developing Internet standards in which case the procedures for
   copyrights defined in the Internet Standards process must be
   followed, or as required to translate it into languages other than
   English.

   The limited permissions granted above are perpetual and will not be
   revoked by the Internet Society or its successors or assigns.

   This document and the information contained herein is provided on an
   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.



















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