Perle Systems MDC, SDS manual Framed-compression

Models: SDS MDC

1 162
Download 162 pages 36.71 Kb
Page 63
Image 63

Configuring Users

framed-compression

Used for User Service PPP or SLIP, determines whether Van Jacobsen Compression is used on the link. VJ compression is a means of reducing the standard TCP/IP header from 40 octets to approximately 5 octets. This gives a significant performance improvement, particularly when interactive applications are being used. For example, when the user is typing, a single character can be passed over the link with a packet as small as 5 octets as opposed to 40 octets when no JV compression is used. VJ Compression has little effect on other types of links, such as ftp, where the packets are much larger. The Framed Compression value will be used in preference to the VJ Compression value set for a Line. The default is Off.

framed-ip

Used for User Service PPP or SLIP, sets the IP address of the remote user. Enter the address in dot decimal notation as follows:

z255.255.255.254 (default)—The IOLAN will use the Remote IP Address set in the PPP settings for the line.

z255.255.255.255—When the User Service is PPP, the IOLAN will allow the remote machine to specify its IP address (overriding the Remote IP Address configured in the line, PPP settings). When the User Service is SLIP, the IOLAN will use the Remote IP Address set for the line (no negotiation).

zn.n.n.n—(where n is a number) Enter the IP address of your choice. This IP address will then be used in preference to the Remote IP Address set for a line.

framed-interface-id

Used for User Service PPP, sets the IPv6 address of the remote user.

framed-mtu

Used for User Service PPP or SLIP, specifies the maximum size of packets, in bytes, being transferred across the link. On noisy links it might be preferable to fragment large packets being transferred over the link, since there will be quicker recovery from errors. Depending on whether you have selected a User Service of SLIP or PPP, details are as follows:

zPPPFramed MTU will be the maximum size of packets that the IOLAN port will accept. This value is negotiated between the two ends of the link. The valid range is 64-1500. The default value is 1500 bytes.

zSLIPFramed MTU will be the maximum size of packets being sent by the IOLAN. The IOLAN will send SLIP packets in the range 256-1500 bytes. The default value is 256 bytes.

The Framed MTU value will be used in preference to the MTU/MRU values set for a Line.

User Commands 63

Page 63
Image 63
Perle Systems MDC, SDS manual Framed-compression

SDS, MDC specifications

Perle Systems is a leading provider of connectivity solutions, renowned for its robustness and reliability in networking hardware. Among its expansive product offerings, the MDC (Multiport Device Converter) and SDS (Serial Device Server) stand out as pivotal solutions for industries requiring seamless data communication and device management.

The Perle MDC serves as a powerful multi-port device converter, providing the ability to connect multiple serial devices to a computer network without needing a separate connection for each device. This is particularly useful in environments with limited computing resources or high device density, such as railways, manufacturing plants, or remote field operations. It is designed to convert serial communication, which is commonly used in legacy devices, into Ethernet/IP or TCP/IP protocols, ensuring that older devices can integrate into modern networks.

Main features of the MDC include its robust design for industrial environments, support for a variety of serial protocols, and multiple device connections. It supports data rates of up to 115200 bps and provides easy monitoring and configuration via a web-based interface. Additionally, the MDC incorporates advanced security features including SSL and SSH encryption, ensuring data integrity and protection against unauthorized access.

On the other hand, the Perle SDS model exemplifies advanced serial device hosting capabilities, allowing users to connect Ethernet networks to serial devices. It acts as a bridge, enabling remote devices to be configured and managed over IP networks. The SDS series is known for its versatility, supporting a range of serial communication protocols, including RS-232, RS-422, and RS-485, making it suitable for various applications such as point-of-sale systems, industrial automation, and remote monitoring.

The SDS boasts several characteristics that enhance its functionality, such as automatic device discovery, real-time monitoring, and local or cloud-based management options. Its feature set also includes traffic management capabilities, allowing the optimization of device communication by controlling the flow of data, which is critical for applications requiring high reliability and low latency.

Both the MDC and SDS benefit from a strong emphasis on ease of deployment and management. They support a range of network topologies, facilitating seamless integration into existing infrastructures. Furthermore, these devices are backed by Perle Systems' reputation for customer support and a commitment to ongoing innovation, ensuring that organizations can rely on these solutions for future growth and technological advancement.