Provided by: lldpad_0.9.46-3.1_i386 bug

NAME

       DCBX - Show / manipulate DCBX configuration

SYNOPSIS

       lldptool -t -i ethx -V IEEE-DCBX -c [mode]

       lldptool -T -i ethx -V IEEE-DCBX mode=reset

       lldptool -t -i ethx -V <CIN-DCBX|CEE-DCBX> -c [enableTx]

       lldptool -T -i ethx -V <CIN-DCBX|CEE-DCBX> enableTx=<yes|no>

DESCRIPTION - DCBX MODE

       lldpad supports the following versions of the DCB capabilities exchange
       (DCBX) protocol:

       CIN DCBX
              <http://download.intel.com/technology/eedc/dcb_cep_spec.pdf>

       CEE DCBX
              <http://www.ieee802.org/1/files/public/docs2008/az-wadekar-dcbx-
              capability-exchange-discovery-protocol-1108-v1.01.pdf>

       IEEE DCBX
              See the IEEE 802.1Qaz-2011 specification for details."

       IEEE  DCBX  is  the  default  DCBX  mode  for  a DCB capable interface.
       Therefore the default and configured IEEE DCBX TLVs will be transmitted
       when  the  interface  comes  up.   lldpad can be globally configured to
       support one of the legacy DCBX versions (CIN or CEE).   If  the  remote
       LLDP  agent  does  not  transmit any IEEE DCBX TLVs and does transmit a
       legacy DCBX TLV which matches the configured legacy DCBX version,  then
       the  DCBX  mode  will  drop  back  to  legacy  DCBX  mode.  It will not
       transition back to IEEE DCBX mode until the next link reset.  If lldpad
       has  dropped  back  to  legacy  DCBX mode for a given interface and the
       daemon is  stopped  and  restarted,  the  legacy  DCBX  mode  for  that
       interface will be used instead of starting out in IEEE DCBX mode.  This
       behavior only applies to the case where lldpad is restarted and is  not
       persistent across a system reboot.

       The  DCBX mode can be queried and configured by using the special tlvid
       IEEE-DCBX.  There is not an actual TLV which corresponds to this tlvid.
       Its  use  is to query and reset the IEEE DCBX mode.  When queried, IEEE
       DCBX mode can take the following values:

       auto - IEEE DCBX will be used (intially) if lldpad  is  restarted.   An
       exception  is  if  the DCBX mode has been forced to a legacy DCBX mode,
       then the specified legacy mode will be used.  See information about the
       'dcbx'   parameter  in  dcbtool(8)  for  more  information  about  this
       exception."

       CEE - CEE DCBX will be used if lldpad is restarted

       CIN - CIN DCBX will be used if lldpad is restarted

       The IEEE DCBX mode can be reset to auto by setting the mode argument to
       the value reset

DESCRIPTION - DCBX CONFIGURATION

       The  detailed  configuration  of  the  IEEE  DCBX  TLVs can be found in
       related lldptool man pages for each IEEE DCBX TLV (see lldptool-pfc(8),
       lldptool-ets(8) and lldptool-app(8)).

       The  detailed  configuration  of the CIN and CEE DCBX TLVs is performed
       using dcbtool (see dcbtool(8)).  However, lldptool  can  configure  the
       enableTx  parameter  of  the CIN and CEE DCBX TLVs (as it can with most
       other TLVs).  Since lldpad only transmits TLVs for one version of  DCBX
       on any given interface, the enableTx parameter for the CIN and CEE DCBX
       TLVs (and for the IEEE DCBX feature TLVs) takes effect  only  when  the
       corresponding DCBX version is active.

ARGUMENTS

       mode=reset
              Reset  the DCBX mode that will be used if lldpad is restarted by
              setting the mode argument to reset using the special tlvid IEEE-
              DCBX.

       enableTx
              Enable  the  specified  DCBX  TLV  (CIN-DCBX  or CEE-DCBX) to be
              transmitted in the LLDPDU if that DCBX mode  for  the  specified
              interface has been selected.

EXAMPLE & USAGE

       Query  the  current DCBX mode that will be used if lldpad is restarted.
       (this is not a persistent setting)
              lldptool -t -i eth3 -V IEEE-DCBX -c mode

       Reset the DCBX mode to be 'auto' (start in IEEE DCBX  mode)  after  the
       next lldpad restart
              lldptool -T -i eth3 -V IEEE-DCBX mode=reset

       Enable transmission of the CEE DCBX TLV
              lldptool -T -i eth3 -V CEE-DCBX enableTx=yes

       Disable transmission of the CIN DCBX TLV
              lldptool -T -i eth3 -V CIN-DCBX enableTx=no

       Query the configuration of enableTx for the CEE DCBX TLV
              lldptool -t -i eth3 -V CEE-DCBX -c enableTx

NOTES

SEE ALSO

       dcbtool(8),  lldptool(8),  lldptool-ets(8),  lldptool-pfc(8), lldptool-
       app(8), lldpad(8)

AUTHOR

       Eric Multanen