Workgroup Remote Access Switch 29
T
HE
C
YBER
SWITCH
Unique System Features
automatically adjust the number of netw ork c onn ect ion s. Th us, your ne twor k cos ts w il l refl ec t
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 mes sages.
Customer-defined filters can forward messages based on addresses, protocol, or packet data.
• Data Compression
Allows the system to negotiate compression algo rithms with another device on the network.
After successfully negotiating compression, data is compressed by the remote device and
transmitted to the system. The system decompr e sses 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 bef ore transmitting it to ano ther 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 u ser dat a
received on the Ethernet LAN or ISDN network and initiate a data connection to the remote
device specified in the user data. This al lows 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 e nable a user to display current system
parameters, change many par amete r s dy nami ca lly , a nd wri te chan ge s t o di sk f il es s o tha t they
remain permanent.
• High Speed Digital Connections
The system supports 56Kbps and 64Kbps connections to remot e locations. The se dial-up digit al
connections provide reliable high throughput connections for efficient data transfer for the
same cost as analog connection s. If any remote devices conn e cted 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 th e transmission of in dividual IP pack ets based on the pa cket
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 r equiring a WAN connection may con-
tinue.
•Packet Capture
In order to monitor incoming LAN data, the Cybe rSWITCH packet capture feature will allow
you to capture, display, save, and load bridged or routed data packets.