Table of Contents
Advertisement
F e a t u r e
Power over Ethernet
Private VLANs
RADIUS Clients
Rapid Spanning Tree
Remote Monitoring
Self-Learning MAC Addresses
SNMP Alarms and Trap Logs
SNMP Versions 1, 2 and 3
Appendix A, Device Specifications & Features
D e s c r i p t i o n
Power over Ethernet (PoE) provide power to devices over exist-
ing LAN cabling, without updating or modifying the network infra-
structure. Power over Ethernet removes the necessity of placing
network devices next to power sources. Power over Ethernet can
be used in the following applications:
•
IP Phones
•
Wireless Access Points
•
IP Gateways
•
PDAs
•
Audio and video remote monitoring
Private VLAN ports are a Layer 2 security feature which provide
isolation between ports within the same Broadcast domain.
RADIUS is a client/server-based protocol. A RADIUS server
maintains a user database, which contains per-user authentica-
tion information, such as user name, password and accounting
information.
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 (RMON) is an extension to SNMP, which pro-
vides 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.
The device enables automatic MAC address learning from incom-
ing packets. The MAC addresses are stored in the Bridging Table
The system logs events with severity codes and timestamps.
Events are sent as SNMP traps to a Trap Recipient List.
For more information on SNMP Alarms and Traps, see "Defining
SNMP Parameters."
Simple Network Management Protocol (SNMP) over the UDP/IP
protocol controls access to the system, a list of community entries
is defined, each of which consists of a community string and its
access privileges. There are 3 levels of SNMP security read-only,
read-write and super. Only a super user can access the commu-
nity table.
Page 234
Advertisement
Table of Contents
