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Chapter 1 Overview
Cabling Guidelines
1-4
Catalyst GigaStack Gigabit Interface Converter Hardware Installation Guide
78-6460-04
Figure 1-3 GBIC LED Location on a 1000BASE-X Module
Table 1-2 describes the switch and 1000BASE-X module GBIC slot LED colors
and port status.
Cabling Guidelines
The GigaStack GBIC uses the following Cisco proprietary cables. See Figure 1-4
and Table 1-3 for more information.
22122
GigaStack GBIC
Tighten
Screws
To Activate
WS-X2931-XL
1
0
0
0
B
a
se
X
GBIC LED
1
2
Table 1-2 Switch and 1000BASE-X Module GBIC Slot LEDs
Color Meaning
Off No link, or port was administratively shut down.
Green Link present.
Flashing green Activity. Port is transmitting or receiving data.
Alternating
green-amber
Link fault. Error frames can affect connectivity, and errors
such as excessive collisions, cyclic redundancy check
(CRC) errors, and alignment and jabber errors are
monitored for a link-fault indication.
Solid amber Port is blocked by 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 as STP checks
the switch for possible loops.
Flashing amber Port is blocked by STP and is sending or receiving packets.