Troubleshooting

Rack PDU Access Problems

For problems that persist or are not described here, see the back cover of this manual.

Problem

Solution

 

 

Unable to ping the Rack PDU

If the Rack PDU’s Status LED is green, try to ping another node on the same

 

network segment as the Rack PDU. If that fails, it is not a problem with the Rack

 

PDU. If the Status LED is not green, or if the ping test succeeds, perform the

 

following checks:

 

• Verify all network connections.

 

• Verify the IP addresses of the Rack PDU and the NMS.

 

• If the NMS is on a different physical network (or subnetwork) from the Rack

 

PDU, verify the IP address of the default gateway (or router).

 

• Verify the number of subnet bits for the Rack PDU’s subnet mask.

 

 

Cannot allocate the

Before you can use a terminal program to configure the Rack PDU, you must shut

communications port through a

down any application, service, or program using the communications port.

terminal program

 

 

 

Cannot access the command line

Make sure that you did not change the baud rate. Try 2400, 9600, 19200, or 38400.

interface through a serial

 

connection

 

 

 

Cannot access the command line

• Make sure you are using the correct access method, Telnet or Secure SHell (SSH).

interface remotely

An Administrator can enable these access methods. By default, Telnet is enabled.

 

Enabling SSH automatically disables Telnet.

 

• For SSH, the Rack PDU may be creating a host key. The Rack PDU can take up to

 

one minute to create the host key, and SSH is inaccessible for that time.

 

 

Cannot access the Web interface

• Verify that HTTP or HTTPS access is enabled.

 

• Make sure you are specifying the correct URL — one that is consistent with the

 

security system used by the Rack PDU. SSL requires https, not http, at the

 

beginning of the URL.

 

• Verify that you can ping the Rack PDU.

 

• Verify that you are using a Web browser supported for the Rack PDU. See

 

“Supported Web Browsers” on page 40.

 

• If the Rack PDU has just restarted and SSL security is being set up, the Rack PDU

 

may be generating a server certificate. The Rack PDU can take up to one minute to

 

create this certificate, and the SSL server is not available during that time.

 

 

Cannot communicate using

• If you are having communications problems with Network Port Sharing, check

Network Port Sharing

that the total length of network cable between up to four units is not more than 10

 

meters.

 

• If you are having communications problems with Network Port Sharing, check

 

that a terminator is installed at both ends of up to four units that can be grouped

 

together.

 

• If you are using Network Port Sharing and do not see one or more of the units in

 

the group, check that all units in the group are using the same firmware revision.

 

You can download appropriate firmware revisions from the APC website.

 

 

Metered Rack PDU User Guide

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APC AP88XX, AP8886, AP8861 manual Troubleshooting, Rack PDU Access Problems, Problem Solution
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AP8886, AP88XX, AP8861 specifications

The APC AP8861, part of the AP88XX series, is a highly versatile and advanced power distribution unit (PDU) designed to meet the growing demands of data centers and IT environments. This series encompasses state-of-the-art technologies and features designed to enhance both operational efficiency and reliability.

The AP8861 model is particularly recognized for its modular design, allowing for easy scaling and expansion as data center needs evolve. With a variety of outlet configurations, it can accommodate numerous devices while optimizing power management. The device supports both standard and high-density power distribution, making it suitable for diverse environments, from small server rooms to large-scale data centers.

One of the hallmark features of the AP8861 is its built-in network management capabilities. It allows for real-time monitoring of power consumption, ensuring optimal load balancing and helping prevent overload situations. The device incorporates environmental monitoring through temperature and humidity sensors, enabling administrators to proactively manage operating conditions and mitigate risks to sensitive equipment.

The AP88XX series features advanced Surge Protection, which guards against electrical surges that can damage connected equipment. This is a critical consideration in data centers where the integrity of sensitive electronics is paramount. Additionally, the series supports remote management, allowing IT personnel to monitor and control power distribution from anywhere in the world. This function enhances operational flexibility and facilitates rapid responses to power-related issues.

Another significant characteristic of the AP8861 is its compatibility with APC's software solutions. Integrating seamlessly with IT management platforms enables deeper insights and analytics, leading to informed decision-making regarding power usage and equipment reliability.

The device boasts a high-efficiency design, contributing to reducing overall energy costs. The capability to customize alarm settings for power events and environmental factors further enhances proactive management of the data center environment.

In summary, the APC AP8861 and the entire AP88XX series are engineered for robust performance, enhanced control, and adaptability in power distribution management. Packed with advanced features, this series offers solutions that help businesses optimize their data centers while ensuring maximum uptime and equipment protection, thereby supporting the ever-increasing demands placed on modern IT infrastructures.
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