DCB-MAXRATE(8)         (22 November 2020)          DCB-MAXRATE(8)

     NAME
          dcb-maxrate - show / manipulate port maxrate settings of the
          DCB (Data Center Bridging) subsystem

     SYNOPSIS
          dcb [ OPTIONS ] maxrate { COMMAND | help }

          dcb maxrate show dev DEV [ tc-maxrate ]

          dcb maxrate set dev DEV [ tc-maxrate RATE-MAP ]

          RATE-MAP := [ RATE-MAP ] RATE-MAPPING

          RATE-MAPPING := { TC | all }

          TC := { 0 .. 7 }

          RATE := { INTEGER[bit] | INTEGERMib | ... }

     DESCRIPTION
          dcb maxrate is used to configure and inspect maximum rate at
          which traffic is allowed to egress from a given traffic
          class.

     PARAMETERS
          The following describes only the write direction, i.e. as
          used with the set command. For the show command, the parame-
          ter name is to be used as a simple keyword without further
          arguments. This instructs the tool to show the value of a
          given parameter. When no parameters are given, the tool
          shows the complete maxrate configuration.

          tc-maxrate RATE-MAP
               RATE-MAP uses the array parameter syntax, see dcb(8)
               for details. Keys are TC indices, values are traffic
               rates in bits per second.  The rates can use the nota-
               tion documented in section PARAMETERS at tc(8).  Note
               that under that notation, "bit" stands for bits per
               second whereas "b" stands for bytes per second. When
               showing, the command line option -i toggles between
               using decadic and ISO/IEC prefixes.

     EXAMPLE & USAGE
          Set rates of all traffic classes to 25Gbps, except for TC 6,
          which will have the rate of 100Gbps:

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     DCB-MAXRATE(8)         (22 November 2020)          DCB-MAXRATE(8)

          # dcb maxrate set dev eth0 tc-maxrate all:25Gbit 6:100Gbit

          Show what was set:

          # dcb maxrate show dev eth0
          tc-maxrate 0:25Gbit 1:25Gbit 2:25Gbit 3:25Gbit 4:25Gbit
          5:25Gbit 6:100Gbit 7:25Gbit

     EXIT STATUS
          Exit status is 0 if command was successful or a positive
          integer upon failure.

     SEE ALSO
          dcb(8)

     REPORTING BUGS
          Report any bugs to the Network Developers mailing list
          <netdev@vger.kernel.org> where the development and mainte-
          nance is primarily done.  You do not have to be subscribed
          to the list to send a message there.

     AUTHOR
          Petr Machata <me@pmachata.org>

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