Testing Connectivity: Examining Link Leds And Counters; Examining The Leds - Cisco SCE 2000 4xGBE Installation And Configuration Manual

Chapter 6 Cabling the Line Ports and Completing the Installation

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.
E
XAMPLE
The following example displays a system response.
SCE 2000#show interface GigabitEthernet 0/1
Auto negotiation configured: Enabled
Actual Status:
Link is on
Auto negotiation: Enabled
Bandwidth: 100000Kbps
Burst-size: 50000bytes
OL-7824-04
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Cisco SCE 2000 4xGBE Installation and Configuration Guide
Connecting the line ports to the network
6-9