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