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 }:RATE

       TC := { 0 .. 7 }

       RATE := { INTEGER[bit] | INTEGERKbit | 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 parameter 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 notation 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:

       # 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
       maintenance is primarily done.  You do not have to be subscribed to the list to send a message there.

AUTHOR

       Petr Machata <me@pmachata.org>

iproute2                                        22 November 2020                                  DCB-MAXRATE(8)