Provided by: lldpad_0.9.46-3.1_i386 bug

NAME

       PFC - Show / manipulate PFC TLV configuration

SYNOPSIS

       lldptool  -t -i ethx -V PFC [ -c [ enableTx | willing | enabled | delay
       ] ]

       lldptool -T -i ethx -V PFC <CONFIG_ARG=value ...>

           CONFIG_ARG:=

            enableTx=<yes|no>

            willing=<yes|no|0|1>

            enabled=<none|[0..7],[0..7],...>

            delay=<integer value>

DESCRIPTION

       The PFC TLV is used to display and set current PFC TLV attributes.

ARGUMENTS

       enableTx
              Enable the PFC TLV to be transmitted in the  LLDP  PDU  for  the
              specified interface.

       willing
              Display  or  set the willing attribute. If set to yes and a peer
              TLV is received then the peer PFC attributes will  be  used.  If
              set to no then locally configured attributes are used.

       enabled
              Display  or  set  the  priorities  with  PFC  enabled.  The  set
              attribute takes a comma separated list of priorities to  enable,
              or the string none to disable all priorities.

       delay  Display  or  set  the  delay  attribute  used  to  configure PFC
              thresholds in hardware buffers. If PFC  is  enabled  and  frames
              continue  to  be  dropped  due  to  full  hardware  buffers then
              increasing this value may help.

Theory of Operations

       The PFC TLV uses the Symmetric attribute passing state machine  defined
       in  IEEE  802.1Qaz.   This means the attributes used will depend on the
       willing bit. If the willing bit is set to 1 and a peer TLV is  received
       then  the peers attributes will be used. If the willing bit is set to 0
       the local attributes will  be  used.  When  both  the  peer  and  local
       configuration  are  willing  a  tie  breaking  scheme is used. For more
       detailed coverage see the specification.

EXAMPLE & USAGE

       Enable PFC for priorities 1, 2, and 4 on eth2
              lldptool -T -i eth2 -V PFC enabled=1,2,4

       Disable PFC for all priorities on eth2
              lldptool -T -i eth2 -V PFC enabled=none

       Display configuration of PFC enabled priorities for eth2
              lldptool -t -i eth2 -V PFC -c enabled

       Display last transmitted PFC TLV on eth2
              lldptool -t -i eth2 -V PFC

SOURCE

       o      IEEE 802.1Qaz (http://www.ieee802.org/1/pages/dcbridges.html)

NOTES

SEE ALSO

       lldptool(8), lldpad(8)

AUTHOR

       John Fastabend