3Com 2916-SFP User Guide - Page 209

Dial-in User Service, Private VLANs

Page 209 highlights

209 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-Band Management 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. 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 Authentication Protocol (PEAP) A protocol proposed by Microsoft, Cisco and RSA Security for securely transporting authentication data, including passwords, over 802.11 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. Remote Authentication Dial-in User Service (RADIUS) RADIUS is a logon authentication protocol that uses software running on a central server to control access to RADIUS-compliant devices on the network.

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209
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-Band
Management
Management of the network from a station not attached to the
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.
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
Authentication
Protocol (PEAP)
A protocol proposed by Microsoft, Cisco and RSA Security for securely
transporting authentication data, including passwords, over 802.11
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.
Remote
Authentication
Dial-in User Service
(RADIUS)
RADIUS
is a logon authentication protocol that uses software running
on a central server to control access to RADIUS-compliant devices on
the network.