o    ipInHdrErrors

              Note that the error "time-to-live exceeded" can occur in a
              host only when it is forwarding a source-routed datagram.




 



RFC1123              SUPPORT SERVICES -- MANAGEMENT         October 1989


         o    ipOutNoRoutes

              This object counts datagrams discarded because no route
              can be found.  This may happen in a host if all the
              default gateways in the host's configuration are down.

         o    ipFragOKs, ipFragFails, ipFragCreates

              A host that does not implement intentional fragmentation
              (see "Fragmentation" section of [INTRO:1]) MUST return the
              value zero for these three objects.

         o    icmpOutRedirects

              For a host, this object MUST always be zero, since hosts
              do not send Redirects.

         o    icmpOutAddrMaskReps

              For a host, this object MUST always be zero, unless the
              host is an authoritative source of address mask
              information.

         o    ipAddrTable

              For a host, the "IP Address Table" object is effectively a
              table of logical interfaces.

         o    ipRoutingTable

              For a host, the "IP Routing Table" object is effectively a
              combination of the host's Routing Cache and the static
              route table described in "Routing Outbound Datagrams"
              section of [INTRO:1].

              Within each ipRouteEntry, ipRouteMetric1...4 normally will
              have no meaning for a host and SHOULD always be -1, while
              ipRouteType will normally have the value "remote".

              If destinations on the connected network do not appear in
              the Route Cache (see "Routing Outbound Datagrams section
              of [INTRO:1]), there will be no entries with ipRouteType
              of "direct".


         DISCUSSION:
              The current MIB does not include Type-of-Service in an
              ipRouteEntry, but a future revision is expected to make




 



RFC1123              SUPPORT SERVICES -- MANAGEMENT         October 1989


              this addition.

              We also expect the MIB to be expanded to allow the remote
              management of applications (e.g., the ability to partially
              reconfigure mail systems).  Network service applications
              such as mail systems should therefore be written with the
              "hooks" for remote management.

      6.3.3  MANAGEMENT REQUIREMENTS SUMMARY

                                               |           | | | |S| |
                                               |           | | | |H| |F
                                               |           | | | |O|M|o
                                               |           | |S| |U|U|o
                                               |           | |H| |L|S|t
                                               |           |M|O| |D|T|n
                                               |           |U|U|M| | |o
                                               |           |S|L|A|N|N|t
                                               |           |T|D|Y|O|O|t
FEATURE                                        |SECTION    | | | |T|T|e
-----------------------------------------------|-----------|-|-|-|-|-|--
Support SNMP or CMOT agent                     |6.3.1      | |x| | | |
Implement specified objects in standard MIB    |6.3.1      | |x| | | |