Cabletron Systems CSX1200, CSX1000 manual Cyberswitch

THE CYBERSWITCH

Unique System Features

automatically adjust the number of network connections. Thus, your network costs will reflect the actual bandwidth being used.

•Filtering

Allows you to control the flow of frames through the network. Filtering becomes necessary if you need to restrict remote access or control widespread transmission of sporadic messages. Customer-defined filters can forward messages based on addresses, protocol, or packet data.

•Data Compression

Allows the system to negotiate compression algorithms with another device on the network. After successfully negotiating compression, data is compressed by the remote device and transmitted to the system. The system decompresses the data, processes the information contained in the user data, and forwards the data as required. The system can receive data coming over a WAN or a LAN, and compress the data before transmitting it to another device on the network. The net effect is to increase interconnect bandwidth by decreasing transmission time. If negotiation for compression fails, data is transmitted uncompressed.

•Dial Out Capability

The system will dial out to remote devices. This feature allows the system to accept user data received on the Ethernet LAN or ISDN network and initiate a data connection to the remote device specified in the user data. This allows devices on the local LAN to initiate connections to networks connected to the system over the switched digital network. The system monitors the connection for utilization and will remove the connection when it becomes idle.

•Dynamic Management

Provides a “real-time” management mechanism that allows many system parameters to be changed without interrupting the current execution state of the system software. This feature consists of a series of console commands that enable a user to display current system parameters, change many parameters dynamically, and write changes to disk files so that they remain permanent.

•High Speed Digital Connections

The system supports 56Kbps and 64Kbps connections to remote locations. These dial-up digital connections provide reliable high throughput connections for efficient data transfer for the same cost as analog connections. If any remote devices connected to the system support multi- link PPP, up to 32 parallel connections can be made at either 56Kbps or 64Kbps.

•IP Filters

The IP filters allow you to control the transmission of individual IP packets based on the packet type. You can specify packet type by IP address (source or destination) or by IP protocol (TCP, UDP, ICMP).

Once you specify a packet type, two forms of IP filtering are available:

•Forwarding Filters, applied at discrete points of the IP processing path to determine if a packet continues its normal processing, and a

•Connection Filter, which determines if an IP packet requiring a WAN connection may con- tinue.

•Packet Capture

In order to monitor incoming LAN data, the CyberSWITCH packet capture feature will allow you to capture, display, save, and load bridged or routed data packets.

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