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Operation
SecureFast Virtual Networking
Secure Fast Virtual Networking combines the best elements of bridging and
routing technologies with connection-oriented switching. Essential to Cabletron's
SecureFast architecture is the ability to embed layer-three virtual routing services
directly into its high-performance switches. Through a simple firmware upgrade,
customers can add "intranet management" software to a broad line of Cabletron
switches, including an installed base of over one million ports.
With Cabletron's "connection-oriented" architecture, users avoid latency and
performance problems and can build intranetworks that more closely mirror the
organizational structure of their business.
Since SecureFast Virtual Networking implements the same connection-oriented
concepts as ATM, customers are guaranteed a smooth migration from packet-
based LANs to cell-based technologies. SecureFast Switching allows customers to
receive many of the benefits of ATM such as security and accountability within
LAN infrastructures.
An equally important SecureFast Virtual Networking feature is a broadcast
interception service that resolves issues such as security, broadcasts, multi-casts
and network flooding. Broadcast interception allows customers to cost-effectively
control broadcast traffic in a switched network without requiring a router.
i960 Core
The i960 core provides the SNMP protocol stacks, to support industry-standard
MIBs. Additionally, Cabletron enterprise extension MIBs are supported for each
media type. Advanced management services, such as the Distributed LAN
Monitor, telnet and network address to MAC address mapping, are also provided
by the i960 core.
The host engine sends and receives packets via the CPU SmartSwitch ASIC
Interface. This method allows the traditional switch to perform spanning tree
protocol and other traditional switching functions. The SMB Interfaces provide
communication to the Host Engine for management functions and
communication with other modules in the chassis.
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