7

UNIX Network

Configuration

The EtherWind print server appears to the network as a UNIX host computer with a unique IP address running the line printer daemon (lpd) protocol. As a result, any host computer that supports the Berkeley remote-LPR command can spool jobs to the print server without the need for any special software on the host computer.

Important Note:

Before configuring a UNIX print queue, the EtherWind must have a valid IP address.

Berkeley UNIX Host Configuration

Berkeley UNIX host computers include Linux, Digital Equipment Corporation Digital UNIX, OSF/1, and ULTRIX; Compaq Tru64 UNIX; SunOS (not Solaris), SCO UNIX; and many others. Sun Solaris, HP/UX, IBM AIX users should skip to the appropriate sections later in this manual.

Important Note:

Do not use the Linux X-Windows graphical user interface printer configuration utility, because it does not work with TROY print servers. Instead, Linux users should follow the configuration steps listed in this section.

Important Note:

SCO UNIX users should use the rlpconf command to create a printer and auto- matically configure the /etc/printcap file (you will still need to edit the /etc/hosts file). Enter the print server's service name (XCD_xxxxxx_P1) as the name of the printer (refer to the print server self-test for the exact name of this service), and enter the name of the print server that you assigned in the /etc/hosts file as the remote host name; note that because this name must be unique for each print- er, we recommend using the XCD_xxxxxx_P1 service instead of the normal BINARY_P1 service.

1. Edit the /etc/hosts file: (or equivalent local host table). For example:

192.189.207.33xcdprinter

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TROY Group 802.11b manual Unix Network, Berkeley Unix Host Configuration, 192.189.207.33xcdprinter

802.11b specifications

TROY Group 802.11b is a significant advancement in wireless networking technology, introduced in the late 1990s. Operating within the 2.4 GHz frequency band, 802.11b provided users with robust connectivity and established a foundation for future wireless standards. This protocol marked a transition from wired networking to wireless, enabling greater mobility and flexibility for users.

One of the main features of the 802.11b standard is its data transmission rate, which supports speeds of up to 11 Mbps. While this may seem modest by today’s standards, it was a groundbreaking achievement at the time. The 802.11b technology utilized Direct Sequence Spread Spectrum (DSSS) modulation, which allowed multiple data streams to coexist with minimal interference. This was crucial in environments with numerous wireless devices.

Security was another important consideration, and 802.11b incorporated Wired Equivalent Privacy (WEP) for data protection. WEP attempted to secure wireless transmissions by encrypting data packets, although it was later found to have vulnerabilities. Nevertheless, it was a starting point for securing wireless communication until more robust security protocols, such as WPA and WPA2, were developed.

The compatibility of 802.11b with earlier standards like 802.11 meant that devices could be mixed and matched, allowing for a smooth transition to wireless networks. With a typical range of around 100 to 300 feet, it was suitable for various environments, from homes to offices. In addition, the protocol facilitated peer-to-peer networking, allowing devices to communicate directly without the need for an access point.

In terms of hardware, 802.11b required compatible wireless network interface cards (NICs) and access points. These devices were increasingly integrated into laptops and desktops, leading to widespread adoption and the growing popularity of wireless networking in everyday life.

In conclusion, TROY Group 802.11b laid the groundwork for modern wireless communication. Its features, including data rates of up to 11 Mbps, DSSS modulation, and initial security measures like WEP, made it a pioneer in the industry. Although it has been succeeded by faster and more secure protocols, the legacy of 802.11b lives on as a crucial development in the evolution of wireless technology, setting the stage for the high-speed and secure connections that users enjoy today.