rfc1354.txt

著名的RFC文档,其中有一些文档是已经翻译成中文的的.


RFC 1354                IP Forwarding Table MIB                July 1992


                    0 1 1 0  ==>  12      0 1 1 1  ==>  14
                    1 0 0 0  ==>  16      1 0 0 1  ==>  18
                    1 0 1 0  ==>  20      1 0 1 1  ==>  22
                    1 1 0 0  ==>  24      1 1 0 1  ==>  26
                    1 1 1 0  ==>  28      1 1 1 1  ==>  30

                Protocols defining 'policy' otherwise must  ei-
                ther define a set of values which are valid for
                this  object  or  must  implement  an  integer-
                instanced  policy table for which this object's
                value acts as an index."
             ::= { ipForwardEntry 3 }


         ipForwardNextHop OBJECT-TYPE
             SYNTAX   IpAddress
             ACCESS   read-only
             STATUS   mandatory
             DESCRIPTION
                "On remote routes, the address of the next sys-
                tem en route; Otherwise, 0.0.0.0."
             ::= { ipForwardEntry 4 }


         ipForwardIfIndex OBJECT-TYPE
             SYNTAX   INTEGER
             ACCESS   read-write
             STATUS   mandatory
             DESCRIPTION
                "The ifIndex value which identifies  the  local
                interface  through  which  the next hop of this
                route should be reached."
             DEFVAL { 0 }
             ::= { ipForwardEntry 5 }


         ipForwardType OBJECT-TYPE
             SYNTAX   INTEGER {
                         other    (1), -- not specified by this MIB
                         invalid  (2), -- logically deleted
                         local    (3), -- local interface
                         remote   (4)  -- remote destination
                      }
             ACCESS   read-write
             STATUS   mandatory
             DESCRIPTION
                "The type of route.  Note that local(3)  refers
                to  a route for which the next hop is the final



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                destination; remote(4) refers to  a  route  for
                which  the  next  hop is not the final destina-
                tion.

                Setting this object to the value invalid(2) has
                the  effect  of  invalidating the corresponding
                entry in the ipForwardTable object.   That  is,
                it  effectively  disassociates  the destination
                identified with said entry from the route iden-
                tified    with    said   entry.    It   is   an
                implementation-specific matter  as  to  whether
                the agent removes an invalidated entry from the
                table.  Accordingly, management  stations  must
                be prepared to receive tabular information from
                agents that corresponds to entries not current-
                ly  in  use.  Proper interpretation of such en-
                tries requires examination of the relevant  ip-
                ForwardType object."
             DEFVAL { invalid }
             ::= { ipForwardEntry 6 }

         ipForwardProto OBJECT-TYPE
             SYNTAX   INTEGER {
                         other     (1),  -- not specified
                         local     (2),  -- local interface
                         netmgmt   (3),  -- static route
                         icmp      (4),  -- result of ICMP Redirect

                                 -- the following are all dynamic
                                 -- routing protocols
                         egp       (5),  -- Exterior Gateway Protocol
                         ggp       (6),  -- Gateway-Gateway Protocol
                         hello     (7),  -- FuzzBall HelloSpeak
                         rip       (8),  -- Berkeley RIP or RIP-II
                         is-is     (9),  -- Dual IS-IS
                         es-is     (10), -- ISO 9542
                         ciscoIgrp (11), -- Cisco IGRP
                         bbnSpfIgp (12), -- BBN SPF IGP
                         ospf      (13), -- Open Shortest Path First
                         bgp       (14), -- Border Gateway Protocol
                         idpr      (15)  -- InterDomain Policy Routing
                      }
             ACCESS   read-only
             STATUS   mandatory
             DESCRIPTION
                "The routing mechanism via which this route was
                learned.  Inclusion of values for gateway rout-
                ing protocols is not  intended  to  imply  that



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                hosts should support those protocols."
             ::= { ipForwardEntry 7 }


         ipForwardAge OBJECT-TYPE
             SYNTAX   INTEGER
             ACCESS   read-only
             STATUS   mandatory
             DESCRIPTION
                "The number of seconds  since  this  route  was
                last  updated  or  otherwise  determined  to be
                correct.  Note that no semantics of  `too  old'
                can  be implied except through knowledge of the
                routing  protocol  by  which  the   route   was
                learned."
             DEFVAL  { 0 }
             ::= { ipForwardEntry 8 }


         ipForwardInfo OBJECT-TYPE
             SYNTAX   OBJECT IDENTIFIER
             ACCESS   read-write
             STATUS   mandatory
             DESCRIPTION
                "A reference to MIB definitions specific to the
                particular  routing protocol which is responsi-
                ble for this route, as determined by the  value
                specified  in the route's ipForwardProto value.
                If this information is not present,  its  value
                should be set to the OBJECT IDENTIFIER { 0 0 },
                which is a syntactically valid object  identif-
                ier, and any implementation conforming to ASN.1
                and the Basic Encoding Rules must  be  able  to
                generate and recognize this value."
             DEFVAL  { { 0 0 } } -- 0.0
             ::= { ipForwardEntry 9 }


         ipForwardNextHopAS OBJECT-TYPE
             SYNTAX   INTEGER
             ACCESS   read-write
             STATUS   mandatory
             DESCRIPTION
                "The Autonomous System Number of the Next  Hop.
                When  this  is  unknown  or not relevant to the
                protocol indicated by ipForwardProto, zero."
             DEFVAL { 0 }
             ::= { ipForwardEntry 10 }



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         ipForwardMetric1 OBJECT-TYPE
             SYNTAX   INTEGER
             ACCESS   read-write
             STATUS   mandatory
             DESCRIPTION
                "The primary routing  metric  for  this  route.
                The  semantics of this metric are determined by
                the routing-protocol specified in  the  route's
                ipForwardProto  value.   If  this metric is not
                used, its value should be set to -1."
             DEFVAL { -1 }
             ::= { ipForwardEntry 11 }


         ipForwardMetric2 OBJECT-TYPE
             SYNTAX   INTEGER
             ACCESS   read-write
             STATUS   mandatory
             DESCRIPTION
                "An alternate routing metric  for  this  route.
                The  semantics of this metric are determined by
                the routing-protocol specified in  the  route's
                ipForwardProto  value.   If  this metric is not
                used, its value should be set to -1."
             DEFVAL { -1 }
             ::= { ipForwardEntry 12 }


         ipForwardMetric3 OBJECT-TYPE
             SYNTAX   INTEGER
             ACCESS   read-write
             STATUS   mandatory
             DESCRIPTION
                "An alternate routing metric  for  this  route.
                The  semantics of this metric are determined by
                the routing-protocol specified in  the  route's
                ipForwardProto  value.   If  this metric is not
                used, its value should be set to -1."
             DEFVAL { -1 }
             ::= { ipForwardEntry 13 }


         ipForwardMetric4 OBJECT-TYPE
             SYNTAX   INTEGER
             ACCESS   read-write
             STATUS   mandatory
             DESCRIPTION
                "An alternate routing metric  for  this  route.



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                The  semantics of this metric are determined by
                the routing-protocol specified in  the  route's
                ipForwardProto  value.   If  this metric is not
                used, its value should be set to -1."
             DEFVAL { -1 }
             ::= { ipForwardEntry 14 }


         ipForwardMetric5 OBJECT-TYPE
             SYNTAX   INTEGER
             ACCESS   read-write
             STATUS   mandatory
             DESCRIPTION
                "An alternate routing metric  for  this  route.
                The  semantics of this metric are determined by
                the routing-protocol specified in  the  route's
                ipForwardProto  value.   If  this metric is not
                used, its value should be set to -1."
             DEFVAL { -1 }
             ::= { ipForwardEntry 15 }

     END

5.  Acknowledgements

   This document was produced by the Router Requirements Working Group,
   of which Phil Almquist is the chair.

   Chris Gunner (DEC) and Keith McCloghrie (Hughes LAN Systems) made
   significant comments on it, and it is better for their input.

6.  References

   [1]  Cerf, V., "IAB Recommendations for the Development of Internet
        Network Management Standards", RFC 1052, NRI, April 1988.

   [2]  Cerf, V., "Report of the Second Ad Hoc Network Management Review
        Group", RFC 1109, NRI, August 1989.

   [3]  Rose M., and K. McCloghrie, "Structure and Identification of
        Management Information for TCP/IP-based internets", RFC 1155,
        Performance Systems International, Hughes LAN Systems, May 1990.

   [4]  McCloghrie K., and M. Rose, "Management Information Base for
        Network Management of TCP/IP-based internets", RFC 1156, Hughes
        LAN Systems, Performance Systems International, May 1990.





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RFC 1354                IP Forwarding Table MIB                July 1992


   [5]  Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple
        Network Management Protocol", RFC 1157, SNMP Research,
        Performance Systems International, Performance Systems
        International, MIT Laboratory for Computer Science, May 1990.

   [6]  McCloghrie K., and M. Rose, Editors, "Management Information
        Base for Network Management of TCP/IP-based internets", RFC
        1213, Performance Systems International, March 1991.

   [7]  Information processing systems - Open Systems Interconnection -
        Specification of Abstract Syntax Notation One (ASN.1),
        International Organization for Standardization, International
        Standard 8824, December 1987.

   [8]  Information processing systems - Open Systems Interconnection -
        Specification of Basic Encoding Rules for Abstract Notation One
        (ASN.1), International Organization for Standardization,
        International Standard 8825, December 1987.

   [9]  Rose, M., and K. McCloghrie, Editors, "Concise MIB Definitions",
        RFC 1212, Performance Systems International, Hughes LAN Systems,
        March 1991.

  [10]  McCloghrie K., and M. Rose, Editors, "Management Information
        Base for Network Management of TCP/IP-based internets", RFC
        1213, Performance Systems International, March 1991.

  [11]  Baker, F., and R. Coltun, "OSPF Version 2 Management Information
        Base", RFC 1253, ACC, Computer Science Center, August 1991.

7.  Security Considerations

   Security issues are not discussed in this memo.

8.  Author's Address

   Fred Baker
   Advanced Computer Communications
   315 Bollay Drive
   Santa Barbara, CA  93117-6014

   Phone: [phone]

   EMail: [e-mail]







Baker                                                          [Page 12]