Perle Systems P840 manual Connection Process, Combination

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ISDN Connection Management

Combination

A combination of the Address Connect and Auto-Call options may be configured when a semi-permanent connection is required to one remote site and a dynamic connection is required to multiple sites. A dynamic connection indicates that the remote site for the second ISDN call will change depending upon what destination IP address is required for the connection. One ISDN B-channel is configured to have an Auto-Call ISDN number and the other B-channel may be used for the Address Connect functions.

Network X

This ISDN connection is made using the first B-channelupon initial power-up and is m aintained according to the Auto-Call param eters.

Network A

555-1 000

The ISDN connection is m ade using the second B-channel

to the appropriate rem ote network according to the entries in the

Address Connect table.

Rem ote Network

ISD N Num ber

Network B

555-2000

Network C

555-3000

Network D

555-4000

Network E

555-5000

Network F

555-6000

Network G

555-7000

Network H

555-8000

555-2000

ISDN N etwork

555-8 000

Network B

Networks C through G

Network H

Figure 2 - 3 Auto-Call & Address Connect WAN Topology

Connection Process

When a LAN client requests a session with a LAN server, the client will initiate the session by sending a session connection request to the server. If the server is located on a remote LAN, the session connection request must be sent to that remote LAN before the server can process the session connection request and reply to it. Any of the call establishment processes may be used to establish the ISDN call between the P840s in order to establish a LAN session between the local and remote LANs.

Once the client-server session has been established, keepalive or status packets are generated by either or both ends of the session. The keepalive packets are used to verify the status of the device at the opposite end of the session.

When Connection Management is enabled, LAN sessions that are established across the ISDN calls are monitored and maintained in a table. The session table may contain up to 256 entries for each supported session type, with the P840 filtering all traffic for any sessions over the 256 limit of the table. The 257th and greater LAN sessions will not be allowed by the P840.

While an ISDN call is up and connected, all traffic within the sessions will be transferred to the partner P840 across the ISDN call.

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Contents Perle P840 Introduction P840 RouterARP-Address Resolution Protocol IP Routing and the P840 RouterProxy ARP Complete IP Connection IP Header Details Redirect Icmp MessagesUnreachable QuenchPing Update MechanismRIP-Routing Information Protocol Time and Mask serverBridging and the P840 Router Initial Bridging ProcessStation Address Learning Aging Timer Filled Address Table Address PurgingAging Exception P840 Router Feature Definitions TelnetLink Compression Typical Compression Ratios by File Type Multilink WAN TopologiesBandwidth On Demand MultipointOperating Software Upgrades Time of Day Connect ApplicationP840 Isdn Connection Management Wide Area Network Topologies SupportedCall Establishment Methods Isdn Connection Management Auto-Call Time-of-Day ConnectionsAddress Connect Manual CallConnection Process CombinationSuspension Process Idle TimerProtocol Awareness Interesting TrafficP840 Session Participation Spoofing Suspended ServerIP Address Connect IP SpecificsTermination Process Suspension of TCP/IP SessionsConsole Connector Pinout InformationEvent Logs Event logsEvent Logs Event Logs Event Logs Event Logs Event Logs Alarm logs Event Logs Event Logs Event Logs Code Description Code Event Logs Event Logs Event Logs Event Logs Event Logs PPP Security logs MAC Address Filtering SecurityFiltering Security-Filter if DestinationSecurity-Filter if Source Security-Forward if Destination Filtering Security-Forward if SourceFiltering Pattern Filter Operators Bridge Pattern FilteringProtocol Discrimination Filter all IP Packets Protocol Type FieldInternet Protocol IP IP, and no moreFiltering Filter all IP without TCP traffic Transport Control Protocol / Internet Protocol TCP/IPFilter only TCP/IP Filter all except TCP/IPEthernet Broadcasting Bandwidth ConservationFilter all DEC Ethernet MulticastingGeneral Restrictions Internet AddressesEthernet Station Addresses Mask Combinations Mask would be 6-010203040506&12-0800&23-06 ExampleIP Router Pattern Filtering Frame Formats Ethernet Type Codes Octet Locations on an IP Routed TCP/IP Frame Octet Locations on a Bridged XNS Frame

P840 specifications

Perle Systems is renowned for its high-performance networking hardware, and the Perle P840 model exemplifies this reputation with its advanced features and technologies. Designed for small to medium-sized enterprises, the P840 serves as a versatile and reliable solution for connectivity needs.

One of the main features of the Perle P840 is its robust network performance, supporting both Ethernet and serial connectivity. With support for RS-232, RS-422, and RS-485 interfaces, the P840 enables seamless integration of legacy devices into modern network architectures, allowing businesses to leverage existing infrastructure without the need for extensive upgrades.

The P840 also boasts advanced security features to protect sensitive data during transmission. It supports SSL encryption and VPN capabilities, ensuring that data travels securely across the network. Additionally, it implements strong authentication protocols, providing organizations with peace of mind knowing that their communications are safeguarded against potential threats.

Another standout characteristic of the P840 is its flexibility in configuration. It offers multiple port configurations, allowing for customization based on specific user needs. With options for both managed and unmanaged modes, the device can easily adapt to various network environments. This flexibility makes it suitable for diverse applications, including industrial automation, process control, and telecommunications.

The Perle P840 is designed for durability and reliability, featuring a rugged enclosure that can withstand demanding environments. Its solid-state components reduce the risk of failure, contributing to increased uptime and lower maintenance costs. Furthermore, the compact design allows for easy installation in tight spaces, making it a practical choice for various deployment scenarios.

In terms of management and monitoring, the P840 includes an intuitive web-based interface, enabling administrators to configure settings and monitor network performance effortlessly. SNMP support further enhances management capabilities, allowing for integration into larger network management systems.

Overall, the Perle P840 stands out as a powerful solution for enterprises seeking seamless connectivity, robust security, and flexibility in configuration. Its combination of advanced features and durable design makes it an ideal choice for industries requiring reliable serial and network connectivity in challenging environments. With the P840, businesses can build a resilient networking infrastructure that supports their growing demands while safeguarding their critical data.
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