AOS-CX Switches with High Power-over-Ethernet Problems

The AOS-CX Switches had excessive Power-over-Ethernet problems insight can be accessed from the Global, Site, and Switches context. This insight provides information on the switches that have not received the required power from PoE Power over Ethernet. PoE is a technology for wired Ethernet LANs to carry electric power required for the device in the data cables. The IEEE 802.3af PoE standard provides up to 15.4 W of power on each port. devices connected to them. PoE issues occur in switches when power is denied, or power is demoted from the device connected to them. It is categorized under availability since the impacted switches are unable to receive sufficient power. This insight displays the following information:

Time Series Graph

In Global and Site context the time series graph displays the count of switches experiencing power issues in the network during the selected time period. You can hover your mouse on each bar graph to see the number of impacted switches during the selected time under each severity. In the Device context, this graph displays the severity level of the selected switch experiencing power issues during the selected time period.

Cards

The cards vary based on the context that you access the insight from. Click one of the cards to view further details:

Table 1: Cards Context

Cards

Context

Site

Global

Switch

Global, Site

Wired Clients

Global, Site

Site

Lists the number of sites where switches have PoE issue. Click the arrow to view the pictorial graph of the Most Impacted sites. Click the number displayed on the Site card, to view a detailed description of the impacted sites:

  • Site—Name of the site where the impacted switch resides and link to the specific insight at the site context.
  • Events—Number of events generated pertaining to PoE failures in each site.
  • Ports—Number of ports for which power is denied.
  • Switches—Number of switches for which power is denied.
  • Impact (Minutes)—Amount of time (minutes) for which power is denied in each site.

Switch

Lists the number of switches that experience PoE issues in the network. Click the arrow to view the pictorial graph of the Most Impacted switches. Click the Switch drop-down list to view the following:

  • Switch Model—Pictorial graph of PoE issues classified by switch models.
  • FW Version—Pictorial graph of PoE issues classified by switch firmware versions.

Click the number displayed on the Switch card to view a detailed description of the impacted switches:

  • Switch Name—Name of the switch experiencing power issues and link to the specific insight at the switch context.
  • Serial—Serial number of the impacted switch and link to the specific insight at the switch context.
  • Events—Number of events generated pertaining to PoE failures in each switch.
  • Wired Clients—Number of clients impacted by the PoE failures.
  • Impact (Minutes)—Amount of time (minutes) for which power is denied in each switch.
  • Stack ID—Stack ID of the impacted switch.
  • Number of Events—Number of events generated pertaining to PoE failures in each switch.
  • Model—Model number of the impacted switch.
  • FW Version—Version of the firmware running on each switch.
  • Site—Name of the site where the switch exists.

Wired Clients

Lists the MAC Media Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network. Address, name, host name, and auth ID of the clients connected to a switch that experience PoE issues. Click the arrow to view the pictorial graph of the Most Impacted clients. Click the Wired Clients drop-down list to view the following:

  • Model—Pictorial graph of all the device types models connected to the impacted switch.
  • Vendor—Pictorial graph of the device type vendors connected to the impacted switch.

Click the number displayed on the Wired Clients card to view a detailed description of the impacted switches:

  • Wired Client—Name of the client.
  • Client MAC—MAC address of the client.
  • Description—An overview of the connected devices, including the OS type, model, and version.
  • Switch Name—Name of the impacted switch where the client resides and link to the specific insight at the switch context.
  • Serial—Serial number of the impacted switch and link to the specific insight at the switch context.
  • Stack ID—Stack ID of the impacted switch where the client resides.
  • Port Number—Port number of the switch the client device is connected to.
  • Power Requested/Offered—PoE consumption for each client.
  • Reason—Cause of the denied PoE power in each client.
  • Status—Status of client.
  • Model—Hardware model of the impacted switch where the client resides.
  • Vendor—Vendor of the wired client.
  • Site—Name of the site where the client resides.