Show commands

The show commands display the following:
  • Dual Signature Indicator (#) which denotes the PD connected to the port is a Dual Signature PD.

  • Power Delivery Indicator (*) which indicate loss of power to a port in the event of loss of a PSU powering the port.

  • Power Demotion Indicator (^) which appears when the switch is unable to supply the entire power requested by the PD. The scenarios include:

Example of show pow br

switch(config)# show pow br
Status and Configuration Information
  System Power Status          : No redundancy
  PoE Power Status             : No redundancy
  Operational Power Status     : No redundancy
  Available: 1440 W  Used: 89 W  Remaining: 1351 W
 PoE    Pwr  	Pwr      Pre-std Alloc Alloc  PSE Pwr PD Pwr PoE Port    PLC PLC
 Port   Enab 	Priority Detect  Cfg   Actual Rsrvd   Draw   Status      Cls Type
 ------ ---- -------- ------- ----- ------ ------- ------- ----------- --- ---- 
 #1     Yes  	low      off    usage usage  57.3 W  49.1 W  Delivering  4   3
 2      Yes  	low      off    usage usage  0.0 W   0.0 W   Searching   0   -
#10     Yes  	low      on     usage usage  2.0 W   1.9 W   Delivering  3^  3
 14     Yes  	low      off    usage usage  9.0 W   8.4 W   Delivering  3^  3
 24     Yes  	low      off    usage lldp   7.3 W   6.9 W   Delivering  4   2
 # - Dual signature power delivery
 ^ - Power demoted ports

Example of show pow port

Example show command output at a port where LLDP is enabled for a Dual Signature PD.

switch(config)$ show pow 1/28

  Status and Configuration Information for port 1/28

  Power Enable      : Yes                   PoE Port Status    : Delivering
  PLC Class/Type    : 5/4                   Priority Config    : critical
  DLC Class/Type    : 5/4                   Pre-std Detect     : on
  Alloc By Config   : usage                 Configured Type    :
  Alloc By Actual   : lldp                  PoE Value Config   : n/a


  PoE Counter Information

  Over Current Cnt  : 284                   MPS Absent Cnt     : 5
  Power Denied Cnt  : 0                     Short Cnt          : 0


  LLDP Information

  PSE Allocated Power Value : 0.0 W           PSE TLV Configured : dot3, MED
  PD Requested Power Value  : 0.0 W           PSE TLV Sent Type  : dot3
  MED LLDP Detect           : Enabled         PD TLV Sent Type   : dot3


  LLDP Dual Signature Information

  PSE Allocated Power Value A : 20.0 W      PSE Allocated Power Value B : 20.0 W
  PD Requested Power Value A  : 20.0 W      PD Requested Power Value B  : 20.0 W


  Power Information

  PSE Voltage       : 54.0 V                PSE Reserved Power : 3.2 W
  PD Amperage Draw  : 57 mA                 PD Power Draw      : 3.2 W

Example show command output at a port where LLDP is disabled.

switch(slot 1)$ show pow 1
 Status and Configuration Information for port 1
  Power Enable      : Yes                   PoE Port Status    : Delivering
  PLC Class/Type    : 4/3                   Priority Config    : low
  DLC Class/Type    : 0/-                   Pre-std Detect     : off
  Alloc By Config   : usage                 Configured Type    :
  Alloc By Actual   : usage                 PoE Value Config   : n/a
  PoE Counter Information
  Over Current Cnt  : 0                     MPS Absent Cnt     : 0
  Power Denied Cnt  : 0                     Short Cnt          : 0

  LLDP Information
  PSE Allocated Power Value : 0.0 W         PSE TLV Configured : MED
  PD Requested Power Value  : 0.0 W         PSE TLV Sent Type  : MED
  MED LLDP Detect           : Disabled      PD TLV Sent Type   : n/a

  LLDP Dual Signature Information
  PSE Allocated Power Value A : 25.5 W      PSE Allocated Power Value B : 25.5 W
  PD Requested Power Value A  : 0.0 W       PD Requested Power Value B  : 0.0 W

  Power Information
  PSE Voltage       : 55.0 V                PSE Reserved Power : 57.4 W
  PD Amperage Draw  : 890 mA                PD Power Draw      : 49.2 W

 
Example show command output at a port for a Single Signature PD.
switch(slot 1)$ show pow 14
 Status and Configuration Information for port 14
  Power Enable      : Yes                   PoE Port Status    : Delivering
  PLC Class/Type    : 3/3                   Priority Config    : low
  DLC Class/Type    : 0/-                   Pre-std Detect     : off
  Alloc By Config   : usage                 Configured Type    :
  Alloc By Actual   : usage                 PoE Value Config   : n/a
  PoE Counter Information
  Over Current Cnt  : 0                     MPS Absent Cnt     : 0
  Power Denied Cnt  : 0                     Short Cnt          : 0

  LLDP Information
  PSE Allocated Power Value : 8.3 W         PSE TLV Configured : dot3, MED
  PD Requested Power Value  : 0.0 W         PSE TLV Sent Type  : dot3
  MED LLDP Detect           : Disabled      PD TLV Sent Type   : n/a

  Power Information
  PSE Voltage       : 54.0 V                PSE Reserved Power : 9.0 W
  PD Amperage Draw  : 151 mA                PD Power Draw      : 8.4 W

Example of show lldp info loc/remote port

A Dual Signature PD is connected to the 2930M .3bt switch:
 LLDP Local Port Information Detail
 Port     : 1/1
 PortType : local
 PortId   : 1
 PortDesc : 1/1
 Pvid     : 1

Poe Plus Information Detail

 Poe Device Type            : Type2 PSE
 Power Source               : Primary
 Power Priority             : Low
 PD Requested Power value   : 25.5 Watts
 PSE Allocated  Power Value : 0.0 Watts
 PD Requested Power value Mode A   :  25.5 Watts
 PSE Allocated  Power Value Alt A  :  12.7 Watts
 PD Requested Power value Mode B   :  25.5 Watts
 PSE Allocated  Power Value Alt B  :  12.7 Watts