3Com 3CRDSF9PWR-US - OfficeConnect Managed Fast Ethernet PoE Switch User Manual - page 233
Switch Features
233
SNMP Alarms and Trap Logs
The system logs events with severity codes and timestamps. Events are
sent as SNMP traps to a Trap Recipient List.
SNMP Versions 1 and 2
Simple Network Management Protocol
(SNMP) over the UDP/IP protocol
controls access to the system.
Spanning Tree Protocol
802.1D Spanning tree is a standard Layer 2 switch requirement that
allows bridges to automatically prevent and resolve L2 forwarding loops.
Switches exchange configuration messages using specifically formatted
frames and selectively enable and disable forwarding on ports.
SSL
Secure Socket Layer (SSL) is an application-level protocol that enables
secure transactions of data through privacy, authentication, and data
integrity. It relies upon certificates and public and private keys.
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.
TCP
Transport Control Protocol
(TCP). TCP connections are defined between 2
ports by an initial synchronization exchange. TCP ports are identified by
an IP address and a 16-bit port number. Octets streams are divided into
TCP packets, each carrying a sequence number.
TFTP Trivial File Transfer Protocol
The device supports boot image, software and configuration
upload/download via TFTP.
Virtual Cable Testing
VCT
detects and reports copper link cabling occurrences, such as open
cables and cable shorts.
VLAN Support
VLANs are collections of switching ports that comprise a single broadcast
domain. Packets are classified as belonging to a VLAN based on either the
VLAN tag or based on a combination of the ingress port and packet
contents. Packets sharing common attributes can be grouped in the same
VLAN.
Web-based Management
With web-based management, the system can be managed from any
web browser. The system contains a Web Server, which serves HTML
pages, through which the system can be monitored and configured. The
system internally converts web-based input into configuration commands,
MIB variable settings and other management-related settings.
Table 13
Features of the OfficeConnect Managed Fast Ethernet PoE Switch (continued)
Feature
Description