Troubleshooting

Troubleshooting

Unusual Network Activity

Unusual Network Activity

Network activity that exceeds accepted norms often indicates a hardware problem with one or more of the network components, possibly including the switch. Unusual network activity is usually indicated by the LEDs on the front of the switch or as indicated by measurements from the switch console or from a network management tool such as the HP TopTools for Hubs & Switches. Refer to the installation guide you received with the switch for information on using LEDs to identify unusual network activity.

General Problems

The network runs slow; processes fail; users cannot access servers or

other devices. Broadcast storms may be occurring in the network. These may be due to loops in the network topology (redundant links between nodes).

•Inspect your network topology to make sure there are no loops in the network.

•If your network requires redundant links to guarantee maintenance of network connectivity, turn on Spanning Tree Protocol to maintain a single active path and provide for redundant links.

Duplicate IP Addresses. This is indicated by this Event Log message:

ip: Invalid ARP source: IP address on IP address

where: both instances of IP address are the same address, indicating the IP address that has been duplicated somewhere on the network.

Duplicate IP Addresses in a DHCP Network. If you use a DHCP server to automatically assign IP addresses in your network and you find a device with a valid IP address that does not appear to communicate properly with the server or other devices, a duplicate IP address may have been issued by the server. This can occur if a client has not released a DHCP-assigned IP address after the intended expiration time and the server “leases” the address to another device. This can also happen, for example, if the server is first configured to issue IP addresses with an unlimited duration, then is subse- quently configured to issue IP addresses that will expire after a limited duration. One solution is to configure “reservations” in the DHCP server for specific IP addresses to be assigned to devices having specific MAC addresses. For more information, refer to the documentation for the DHCP server.

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HP 224M, 212M manual Unusual Network Activity, General Problems, Ip Invalid ARP source IP address on IP address
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224M, 212M specifications

The HP 212M and 224M are innovative models in the line of HP printers that combine advanced printing technology with user-friendly features, making them suitable for various printing needs in both home and office environments. These models stand out due to their efficiency, speed, and overall print quality.

One of the main features of the HP 212M and 224M is their high-resolution printing capabilities. They offer sharp text and vivid colors, ensuring that documents, photos, and graphics look professional and appealing. Both models utilize HP’s proprietary thermal inkjet technology, which allows for precise ink placement and minimizes waste, further contributing to the overall cost efficiency of printing.

The HP 212M is designed for lower-volume printing needs, making it an ideal choice for small businesses or home offices that require reliable performance without overwhelming capacity. It supports a range of paper sizes and types, providing versatility for various printing tasks.

On the other hand, the HP 224M is equipped to handle higher volume printing demands. It features larger ink cartridges and advanced paper handling capabilities, allowing it to accommodate larger print jobs without frequent interruptions. This makes it particularly suitable for busy work environments where efficiency is paramount.

Both models come equipped with wireless connectivity options, allowing users to print from smartphones, tablets, and computers seamlessly. The compatibility with mobile printing technologies, such as Apple AirPrint and Google Cloud Print, empowers users to send documents to the printer from virtually anywhere, enhancing workflow and productivity.

Energy efficiency is another characteristic that distinguishes the HP 212M and 224M printers. They are designed to consume less power than traditional printers, contributing to lower energy bills and a reduced carbon footprint. Additionally, HP’s commitment to sustainability is evident through their recyclable cartridge program, encouraging eco-friendly practices among users.

In summary, the HP 212M and 224M printers offer a compelling combination of high-quality printing, advanced technology, and user-friendly features. Whether for personal use or professional settings, these models provide the reliability and performance that users need to meet their printing requirements efficiently.
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