3Com 2924-PWR manual Port Authentication See Ieee

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Multicast Switching A process whereby the switch filters incoming multicast frames for services for which no attached host has registered, or forwards them to all ports contained within the designated multicast VLAN group.

Out-of-BandManagement of the network from a station not attached to the Management network.

Port Authentication See IEEE 802.1X.

Port Mirroring A method whereby data on a target port is mirrored to a monitor port for troubleshooting with a logic analyzer or RMON probe. This allows data on the target port to be studied unobstructively.

Port Trunk Defines a network link aggregation and trunking method which specifies how to create a single high-speed logical link that combines several lower-speed physical links.

Power over Ethernet Power over Ethernet provides power to devices over existing LAN (PoE) cabling, without updating or modifying the network infrastructure.

Power over Ethernet removes the necessity of placing network devices next to power sources.

Private VLANs Private VLANs provide port-based security and isolation between ports within the assigned VLAN. Data traffic on downlink ports can only be forwarded to, and from, uplink ports.

Protected Extensible A protocol proposed by Microsoft, Cisco and RSA Security for securely Authentication transporting authentication data, including passwords, over 802.11 Protocol (PEAP) wireless networks. Like the competing standard Tunneled Transport

Layer Security (TTLS), PEAP makes it possible to authenticate wireless LAN clients without requiring them to have certificates, simplifying the architecture of secure wireless LANs.Protocol-Independent Multicasting (PIM)

This multicast routing protocol floods multicast traffic downstream, and calculates the shortest-path back to the multicast source network via reverse path forwarding. PIM uses the router’s IP routing table rather than maintaining a separate multicast routing table as with DVMRP. PIM - Sparse Mode is designed for networks where the probability of a multicast client is low, such as on a Wide Area Network. PIM - Dense Mode is designed for networks where the probability of a multicast client is high and frequent flooding of multicast traffic can be justified.