ZyXEL Communications GS-2750, Руководство пользователя

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Chapter 41 Product Specifications
GS-2750 User’s Guide
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Port Mirroring Port mirroring allows you to copy traffic going from one or all ports to
another or all ports in order that you can examine the traffic from the
mirror port (the port you copy the traffic to) without interference.
Static Route Static routes tell the Switch how to forward IP traffic when you configure
the TCP/IP parameters manually.
Multicast VLAN Registration
(MVR)
Multicast VLAN Registration (MVR) is designed for applications (such as
Media-on-Demand (MoD)) using multicast traffic across a network. MVR
allows one single multicast VLAN to be shared among different
subscriber VLANs on the network.
This improves bandwidth utilization by reducing multicast traffic in the
subscriber VLANs and simplifies multicast group management.
IP Multicast With IP multicast, the Switch delivers IP packets to a group of hosts on
the network - not everybody. In addition, the Switch can send packets to
Ethernet devices that are not VLAN-aware by untagging (removing the
VLAN tags) IP multicast packets.
RIP RIP (Routing Information Protocol) allows a routing device to exchange
routing information with other routers.
VRRP Virtual Router Redundancy Protocol (VRRP), defined in RFC 2338,
allows you to create redundant backup gateways to ensure that the
default gateway of a host is always available.
STP (Spanning Tree
Protocol) / RSTP (Rapid
STP)
(R)STP detects and breaks network loops and provides backup links
between switches, bridges or routers. It allows a Switch to interact with
other (R)STP -compliant switches in your network to ensure that only
one path exists between any two stations on the network.
Loop Guard Use the loop guard feature to protect against network loops on the edge
of your network.
IP Source Guard Use IP source guard to filter unauthorized DHCP and ARP packets in
your network.
Link Aggregation Link aggregation (trunking) is the grouping of physical ports into one
logical higher-capacity link. You may want to trunk ports if for example, it
is cheaper to use multiple lower-speed links than to under-utilize a high-
speed, but more costly, single-port link.
Port Authentication and
Security
For security, the Switch allows authentication using IEEE 802.1x with an
external RADIUS server and port security that allows only packets with
dynamically learned MAC addresses and/or configured static MAC
addresses to pass through a port on the Switch.
Authentication and
Accounting
The Switch supports authentication and accounting services via
RADIUS and AAA servers.
Device Management Use the web configurator or commands to easily configure the rich range
of features on the Switch.
Port Cloning Use the port cloning feature to copy the settings you configure on one
port to another port or ports.
Syslog The Switch can generate syslog messages and send it to a syslog
server.
Firmware Upgrade Download new firmware (when available) from the ZyXEL web site and
use the web configurator, CLI or an FTP/TFTP tool to put it on the
Switch.
Note: Only upload firmware for your specific model!
Table 126 Firmware Specifications
FEATURE DESCRIPTION