Enterasys csx5500 用户指南
Central Site Remote Access Switch 31
T
HE
C
YBER
SWITCH
Unique System Features
U
NIQUE
S
YSTEM
F
EATURES
The CyberSWITCH combines unique features that improve cost-effectiveness, reliability, and
performance for wide area network connections to remote devices. These features include:
performance for wide area network connections to remote devices. These features include:
•
Bandwidth Agility
The CyberSWITCH dynamically controls the bandwidth in use between itself and other PPP
devices. This is accomplished by establishing and disconnecting calls. The number of calls is
limited only by the types and number of lines available. The system monitors the connections
for utilization and will add and remove the connections based on user-configurable
throughput parameters. As network bandwidth requirements increase or decrease, the system
will automatically adjust the number of network connections. Thus, your network costs will
reflect the actual bandwidth being used.
The CyberSWITCH dynamically controls the bandwidth in use between itself and other PPP
devices. This is accomplished by establishing and disconnecting calls. The number of calls is
limited only by the types and number of lines available. The system monitors the connections
for utilization and will add and remove the connections based on user-configurable
throughput parameters. As network bandwidth requirements increase or decrease, the system
will automatically adjust the number of network connections. Thus, your network costs will
reflect the actual bandwidth being used.
•
Filtering
The CyberSWITCH’s filtering feature 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.
The CyberSWITCH’s filtering feature 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.
•
Combining Leased Line and Switched Connections
Use the Switched Connections feature to automatically backup failed or overloaded leased
lines (for example, in peak hour overflow situations). The capability of combining switched
connections with leased line capacity allows you to reduce costs and greatly improve the
reliability and performance of leased line networks.
Use the Switched Connections feature to automatically backup failed or overloaded leased
lines (for example, in peak hour overflow situations). The capability of combining switched
connections with leased line capacity allows you to reduce costs and greatly improve the
reliability and performance of leased line networks.
The following graph illustrates the relationship between cost and hours of usage when
comparing a switched connection to a dedicated connection:
comparing a switched connection to a dedicated connection:
•
Data Compression
The CyberSWITCH can negotiate compression algorithms with another device on the network.
After successfully negotiating compression, data is compressed by the remote device and
transmitted to the CyberSWITCH 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.
The CyberSWITCH can negotiate compression algorithms with another device on the network.
After successfully negotiating compression, data is compressed by the remote device and
transmitted to the CyberSWITCH 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.
Cost
Hours of Usage
Switched
Connection
Connection
Dedicated Connection