3.0PPP OPERATIONAL BACKGROUND

PPP is a protocol used for multi-plexed transport over a point-to-point link. PPP operates on all full duplex media, and is a symmetric peer-to- peer protocol, which can be divided into the following main components:

•A standard method to encapsulate datagrams over serial links

•A Link Control Protocol (LCP) to establish, configure, and test the data-link connection

•A family of Network Control Protocols (NCPs) to establish and config- ure different network layer protocols

In order to establish communications over a point-to-point link, each end of the PPP link must first announce its capabilities and agree on the parameters of the link’s operation. This exchange is facilitated through LCP Configure-Request packets.

Once the link has been established and optional facilities have been negotiated, PPP will attempt to establish a network protocol. PPP will use Network Control Protocol (NCP) to choose and configure one or more network layer protocols. Once each of the network layer protocols have been configured, datagrams from the established network layer protocol can be sent over the link. The link will remain configured for these communications until explicit LCP or NCP packets close the link down, or until some external event occurs.

The PPP Bridging Control Protocol (BCP), defined in RFC 1638, config- ures and enables/disables the bridge protocol on both ends of the point- to-point link. BCP uses the same packet exchange mechanism as the Link Control Protocol (LCP). BCP is a Network Control Protocol of PPP, bridge packets may not be exchanged until PPP has reached the net- work layer protocol phase.

3.1 APPLICATIONS

In situations where a routed network requires connectivity to a remote Ethernet network, the interface on a router can be configured as a PPP IP Half Bridge. The WAN line to the remote bridge functions as a Virtual Ethernet interface, effectively extending the routers WAN port connection to the remote network. The bridge device sends bridge packets (BPDU’s) to the router’s WAN interface. The router will receive the layer three address information and will forward these packets based on its IP address.

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Patton electronic PATTON 2707/I user manual PPP Operational Background, Applications
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PATTON 2707/I specifications

The Patton Electronics PATTON 2707/I is a versatile and powerful device designed for the efficient transmission of data over various types of connections. It is particularly recognized for its ability to convert various data formats, making it an ideal choice for both industrial and commercial applications.

One of the standout features of the PATTON 2707/I is its dual-purpose functionality as a serial-to-Ethernet and Ethernet-to-serial converter. This enables users to connect legacy serial devices to modern Ethernet networks, thus facilitating communication between newer and older technologies. With support for both TCP and UDP protocols, the device ensures reliable data transfer over the internet or local area networks.

The PATTON 2707/I uses advanced technology to provide robust and secure data transmission. It incorporates a built-in web server that allows easy configuration and management of the device via a user-friendly interface. This feature simplifies the setup process, enabling users to manage their connections with ease. Additionally, it supports SNMP (Simple Network Management Protocol), which facilitates remote monitoring and management, making it essential for network administrators.

Another significant characteristic of the PATTON 2707/I is its wide compatibility with serial protocols. It supports a variety of data formats, including RS-232, RS-422, and RS-485. This versatility allows for seamless integration with different devices, enhancing its utility in diverse environments. Users can also take advantage of the device’s ability to handle data rates of up to 115200 bps, ensuring fast and efficient communication.

In terms of physical specifications, the PATTON 2707/I is compact and designed for flexibility. It features multiple mounting options, including DIN rail and wall-mount configurations, making it suitable for various installation environments. The robust construction of the device ensures it can withstand industrial conditions, further enhancing its reliability.

Furthermore, the device supports advanced security features, including password-protected access and secure communications protocols. This ensures that data integrity is maintained during transmission, which is crucial for applications that require secure data handling.

In summary, the Patton Electronics PATTON 2707/I is a sophisticated and reliable solution for those needing to integrate serial and Ethernet communications. Its array of features, including dual functionality, web management, wide compatibility, and robust security, make it an indispensable tool in modern data networking. Whether for industrial automation, telecommunications, or any application requiring seamless data connectivity, the PATTON 2707/I stands out as a leader in the field.
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