Specifications

4-9
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
78-11380-07
Chapter 4 Getting Started with CMS
Front Panel View
VLAN Membership Modes
Table 4-7 lists the colors that outline the ports (Front Panel view) when you click Highlight VLAN Port
Membership Modes on the Configure VLANs tab on the VLAN window. The colors show the VLAN
membership mode of each port. The VLAN membership mode determines the kind of traffic the port
carries and the number of VLANs to which it can belong. For more information about these modes, see
the “VLAN Port Membership Modes” section on page 15-3.
Note This feature is not supported on the Catalyst 1900 and Catalyst 2820 switches.
Table 4-5 Port Modes
Mode LED Description
STAT Link status of the ports. Default mode.
DUPLX Duplex setting on the ports. The default setting on the 10/100 ports is auto. The default setting on the
10/100/1000 ports is full.
SPEED Speed setting on the ports. The default setting on the 10/100 and 10/100/1000 ports is auto.
Table 4-6 Port LEDs
Port Mode Port LED Color Description
STAT Cyan (off) No link.
Green Link present.
Amber Link fault. Error frames can affect connectivity, and errors such as excessive
collisions, CRC errors, and alignment and jabber errors are monitored for a
link-fault indication.
Port is not forwarding. Port was disabled by management, by an address
violation, or by Spanning Tree Protocol (STP).
Note After a port is reconfigured, the port LED can remain amber for up to 30
seconds as STP checks the switch for possible loops.
Brown No link. Port is administratively shut down.
DUPLX Cyan (off) Port is operating in half-duplex mode.
Green Port is operating in full-duplex mode.
SPEED Cyan (off) Port is operating at 10 Mbps (10/100 ports) or no link (10/100/1000 ports and
GBIC module ports).
Green Port is operating at 100 Mbps (10/100 ports) or 1000 Mbps (GBIC module ports).
Blinking green Port is operating at 1000 Mbps (10/100/1000 ports).