Cisco SFE2000 Release Notes page 5

Release Notes for Cisco Small Business SFE2000 Series 24-port 10/100 Ethernet Switches
Back Pressure Support
On half-duplex links, the receiving port prevents buffer overflows by occupying
the link so that it is unavailable for additional traffic.
Virtual Cable Testing (VCT)
VCT detects and reports copper link cabling occurrences, such as open cables
and cable shorts.
Optical Transceiver Analysis
The Finisar optical transceiver provides access to a set of parameters that can be
monitored and displayed to the system administrator.
MDI/MDIX Support
The device automatically detects whether the cable connected to an RJ-45 port is
crossed or straight through, when auto-negotiation is enabled. Standard wiring for
end stations is Media-Dependent Interface (MDI) and the standard wiring for hubs
and switches is known as Media-Dependent Interface with Crossover (MDIX).
Auto Negotiation
Auto negotiation allows the device to advertise modes of operation. The auto
negotiation function provides the means to exchange information between two
devices that share a point-to-point link segment, and to automatically configure
both devices to take maximum advantage of their transmission capabilities.
Auto-negotiation advertisement is also supported. Port advertisement allows the
system administrator to configure the port speeds advertised.
Manual Port Control and Identification
While port settings can be derived automatically, as described above, many
settings can be set by the user manually.
MAC Address Supported Features
•
MAC Address Capacity Support—This device supports up to 8K MAC
addresses. It reserves specific MAC addresses for system use.
•
Static MAC Entries— MAC entries can be manually entered in the Bridging
Table, as an alternative to learning them from incoming frames. These user-
defined entries are not subject to aging and are preserved across resets
and reboots.
Release Notes
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