EPS 2011-04

6-6

Troubleshooting

Troubleshooting the 620/630

This section describes how to troubleshoot the HP 620 and 630 RPS/EPS. This

section describes the following:

■ basic troubleshooting tips (page 6-6)

■ diagnosing with the LEDs (page 6-7)

■ diagnostic tests (page 6-9)

■ HP customer support services (page 6-10)

Basic Troubleshooting Tips

Most problems are caused by the following situations. Check for these items

first when starting your troubleshooting:

■ Faulty or loose cables. Look for loose or obviously faulty connections.

If the cables appear to be OK, make sure the connections are secure. If

that does not correct the problem, try a different cable.

■ Connection topologies. It is important to make sure you have a valid

connection topology. The 620 RPS/EPS can support two HP PoE switches

on its EPS ports and two HP switches can be connected to its RPS ports.

The 630 RPS/EPS can support one HP PoE+ device on its EPS port and

one HP switch can be connected to the RPS port. Sample topologies are

shown on page 5-26 in this book.

■ Power limitations. Be sure to understand the power limitations of these

devices when connecting switches. An overload condition on a port

causes the port to be shut down. For more information regarding power

limitations see:

• the installation and getting started guide for your particular switch

• chapter 2 of this manual for the HP 620 RPS/EPS or chapter 3 of this

manual for the HP 630 RPS/EPS

•the HP Power over Ethernet (PoE/PoE+) Planning and Implemen-

tation Guide

Note Use caution when power cycling these external power supplies as this may

affect devices receiving operating power from the unit.