nccheck(8) — AIX PS/2 1.2.1



NCCHECK(8,C)                AIX Commands Reference                 NCCHECK(8,C)



-------------------------------------------------------------------------------
nccheck



PURPOSE

Checks cluster /etc/netparams configuration.

SYNTAX


          +-------------------+  +------+
nccheck --|      one of       |--|      |-|
          |------- -L --------|  +- -A -+
          |                   |
          +-- -s --- site # --+
                   ^         |
                   +---------+


DESCRIPTION

The nccheck command is used to rapidly confirm that the cluster /etc/netparams
file matches the standard values (as shipped).  Differences are reported on a
per-item basis.  The nccheck commmand also compares each running kernel in the
cluster to the /etc/netparams file to confirm the use of /etc/params.  The
nccheck provides the user with the ability to check network configuration
parameters against the established norms.  Furthermore, nccheck can be used to
report on various system parameters which may affect network configuration.

The nccheck command runs on any site in a cluster, executing sub-programs on
each desired site in the cluster to gather data.  Once the data has been
gathered, a report is prepared according to the user options and is written to
standard output.  Network parameter check reports are formatted as follows:

  site_number timeout retries window sp_wind checksum
      ... (for each site) ...

Parameters which differ from the norm are highlighted by displaying the norm in
parenthesis following the observed value.

Sites appearing in /etc/sites from which data was not able to be collected are
flagged as in the following report:

  Data was not collected from the following sites:
  site_number reason_data_was_not_collected
      ... (for each site) ...

Extended reports contain parameters and data related to the network
configuration of a site.  The extended reports are formatted as in the
following example:



Processed November 8, 1990       NCCHECK(8,C)                                 1



NCCHECK(8,C)                AIX Commands Reference                 NCCHECK(8,C)




  ---------------------------------------------------------------
   Site               Memory   Buffers      Swap
   Number                                  Space
  ---------------------------------------------------------------
   fafnir   (1)        12160       482     40000
   werth    (2)         8068       284     40000
   atlas    (3)         6016       200     24000
   zaniah   (4)         6016       200     40000

The memory and swap space sizes are reported in 1024-byte granules.

AIX sites running on System/370 virtual machines have the following data
reported:

  ---------------------------------------------------------------
   Site            370paging  370hdclk
   Number               Rate
  ---------------------------------------------------------------
   fafnir   (1)            0         0
   werth    (2)            4         0
   snap     (5)            4         0
   carmen   (14)           0         0

The System/370 paging rate is the paging rate returned by a cpcmd indicate
command.  The System/370 hard clock value is a count of the number of times AIX
has determined that VM is providing an insufficient amount of CPU to AIX.

Network status is reported as in the following example:

  ---------------------------------------------------------------
   Site               # mbuf     # bad     uptime
   Number             denied    routes    of site
  ---------------------------------------------------------------
   fafnir   (1)            0         0   0w  1d  2h 44m 20s
   werth    (2)            0         0   0w  1d 19h 22m 16s
   atlas    (3)           11         0   0w  2d 23h  9m 45s
   zaniah   (4)            0         6   1w  2d 14h 24m 29s
   snap     (5)            0      6225   0w  0d  9h 43m 37s

The "# mbuf denied" and "# bad routes" values are the error counters also
returned by the netstat command.

The status of all interfaces on selected sites is reported in the same format
as ifconfig command output, as in the following example:










Processed November 8, 1990       NCCHECK(8,C)                                 2



NCCHECK(8,C)                AIX Commands Reference                 NCCHECK(8,C)



  The Net Interface Status and Address for site fafnir   (1):
  -------------------------------------------------
    il0: flags=22<BROADCAST,NOTRAILERS> metric 0
       inet 0.0.0.0 netmask 0 broadcast 0.0.0.0
    ceti0: flags=463<UP,BROADCAST,NOTRAILERS,RUNNING,ETHERNET> metric 4
       inet 130.200.6.1 netmask ffff0000 broadcast 130.200.255.255
    vctc0: flags=10<POINTOPOINT> metric 0
       inet 0.0.0.0 netmask 0 broadcast 0.0.0.0

FLAGS

-A          Prepares an extended report.

-L          Gathers data from the local site only.

-s site #   Gathers data from the specified sites.  The default action is to
            prepare network parameter reports for all sites in the cluster.

FILES

/usr/bin/ncbe   Data collector program.

RELATED INFORMATION

See the following commands:  "netparams" and "lnetstat."

In the AIX TCP/IP User's Guide, see the following commands:  ifconfig and
netstat.



























Processed November 8, 1990       NCCHECK(8,C)                                 3

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