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Cisco Network Modules Hardware Installation Guide
OL-2485-20
Chapter 3 Connecting Ethernet, Fast Ethernet, and Token Ring Network Modules
Token Ring Network Modules
Token Ring LEDs
All network modules have an enable (EN) LED. The enable LED indicates that the module has passed
its self-tests and is available to the router.
The 1-Ethernet 1-Token Ring 2-WAN card slot network module and the 1-Fast Ethernet 1-Token Ring
2-WAN card slot network module both have the following Token Ring LEDs:
•
The 16MBPS LED indicates a ring speed of 16 Mbps. If it is off, the ring speed is 4 Mbps.
•
The IN-RING LED indicates that the Token Ring interface is inserted into the ring. If it is off, the
interface is not inserted into the ring.
The 1-Fast Ethernet 1-Token Ring 2-slot network module also has the FDX LED, which indicates
full-duplex mode.
Timesaver
When the IN-RING LED is off, you can unplug the Token Ring cable without causing a problem on
the ring.