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Chapter 6 Cabling the Line Ports and Completing the Installation
Connecting the line ports to the network
SCE 2000 4xGBE Installation and Configuration Guide
6-10
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Testing Connectivity: Examining Link LEDs and Counters
If the
SCE 2000
platform has been powered up, test now to verify that connectivity has been
established on all links. If the
SCE 2000
platform is not powered up, perform this step after
starting the
SCE 2000
platform.
Examining the LEDs
The GBE Link LED must be green in order to verify that an active connection exists.
The GBE Rx and Tx LEDs (if flashing green) indicate that traffic is being received or transmitted
by the
SCE 2000
platform, respectively.
Note that in an inline topology, the Rx and Tx LEDs indicate that packets are being
received/transmitted by the
SCE 2000
platform.
In optical splitter topologies, the Rx LEDs are the sole indicators. The Tx LEDs do not “blink”,
since the Tx is not connected to the port in this topology.
Viewing the Counters to Verify that the Network Traffic is
Reaching the Device
In an inline topology, you can monitor traffic via the platform counters for both the Rx and Tx
connections. The counters increase, together with the increased number of packets that flow
through the
SCE 2000
for both Rx and Tx.
However, in external switch topologies, the counters for the Tx do not increment, that is, Tx does
not have a function in monitoring traffic, as it is disconnected.
To view the Gigabit Ethernet port status, complete the following steps:
Step 1
At the
SCE 2000
# prompt, type
show interface GigabitEthernet 0/
interface-
number
.
This displays the port link and auto-negotiation status.