3Com 3CRDSF9PWR manual Interface with Crossover Mdix

232APPENDIX B: DEVICE SPECIFICATIONS AND FEATURES

Table 13 Features of the OfficeConnect Managed Fast Ethernet PoE Switch (continued)

Feature	Description
MAC Address Capacity Support	The device supports up to 8K MAC addresses. The device reserves specific
	MAC addresses for system use.
MAC Multicast Support	Multicast service is a limited broadcast service, which allows one-to-many
	and many-to-many connections for information distribution. Layer 2
	Multicast service is where a single frame is addressed to a specific
	Multicast address, from where copies of the frame are transmitted to the
	relevant ports.
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).
Password Management	Password management provides increased network security and improved
	password control. Passwords for HTTP, HTTPS, and SNMP access are
	assigned security features. For more information on Password
	Management, see “Default Users and Passwords” page 33.
Port-based Authentication	Port-based authentication enables authenticating system users on a
	per-port basis via an external server. Only authenticated and approved
	system users can transmit and receive data. Ports are authenticated via
	the Remote Authentication Dial In User Service (RADIUS) server using the
	Extensible Authentication Protocol (EAP).
Port-based Virtual LANs	Port-based VLANs classify incoming packets to VLANs based on their
	ingress port.
Port Mirroring	Port mirroring monitors and mirrors network traffic by forwarding copies
	of incoming and outgoing packets from a monitored port to a monitoring
	port. Users specify which target port receives copies of all traffic passing
	through a specified source port.
Power over Ethernet	Provides power to devices over LAN connection.
RADIUS Clients	RADIUS is a client/server-based protocol. A RADIUS server maintains a
	user database, which contains per-user authentication information, such
	as user name, password and accounting information.
Rapid Spanning Tree	Spanning Tree can take 30-60 seconds for each host to decide whether its
	ports are actively forwarding traffic. Rapid Spanning Tree (RSTP) detects
	uses of network topologies to enable faster convergence, without
	creating forwarding loops.
Remote Monitoring	Remote Monitoring (RMON) is an extension to SNMP, which provides
	comprehensive network traffic monitoring capabilities (as opposed to
	SNMP which allows network device management and monitoring).
	RMON is a standard MIB that defines current and historical MAC-layer
	statistics and control objects, allowing real-time information to be
	captured across the entire network.
Self-Learning MAC Addresses	The device enables automatic MAC address learning from incoming
	packets. The MAC addresses are stored in the Bridging Table