Cisco 3825 Hardware Installation Guide - Page 237

Chapter 18 Connecting Cisco EtherSwitch Service Modules Cisco EtherSwitch Services Modules Port LEDs Each port has a port LED. These port LEDs, as a group or individually, display information about the module and about the individual ports. Table 18-7 explains how to interpret the port LED colors in different port modes on the Cisco StackWise EtherSwitch service module. Table 18-8 explains how to interpret the port LED colors for link status on the Cisco EtherSwitch service modules. Table 18-7 Port LEDs on the Cisco StackWise EtherSwitch Service Module Port Mode STAT (default mode) DUPLX SPEED STACK Port LED Color Meaning Off No link, or the port was administratively shut down. Green A link is present. Flashing green Activity is occurring. The port is transmitting or receiving data. Alternating Link fault. Error frames can affect connectivity, and errors such as green-amber excessive collisions, Cyclic Redundancy Check (CRC) errors, and alignment and jabber errors are monitored for a link fault. Amber The port is blocked by the Spanning-Tree Protocol (STP) and is not forwarding data. Note After a port is reconfigured, the port LED can remain amber for up to 30 seconds while STP checks the Cisco StackWise EtherSwitch service module for possible loops. Flashing amber The port is blocked by STP and is transmitting or receiving packets. Off The port is operating in half-duplex mode. Green The port is operating in full-duplex mode. 10/100 and 10/100/1000 ports Off The port is operating at 10 Mbps. Green The port is operating at 100 Mbps. Flashing green The port is operating at 1000 Mbps. SFP ports Off The port is not operating. Green The port is operating at 1000 Mbps. Off No stack member corresponds to that member number. Flashing green Member number of the selected Cisco EtherSwitch service module. Green Member number of other stack member Cisco EtherSwitch service modules. OL-2485-20 Cisco Network Modules Hardware Installation Guide 18-11