ZyXEL Communications VES-1616F-44, Руководство пользователя

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VES-1616F/1624F-44 User’s Guide
Chapter 1 Getting to Know Your Switch 31
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.
IGMP Snooping
The switch supports IGMP snooping enabling group multicast traffic to be only forwarded to
ports that are members of that group; thus allowing you to significantly reduce multicast
traffic passing through your switch.
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.
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.
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.
Maintenance and Management Features
• Access Control
You can specify the service(s) and computer IP address(es) to control access to the switch
for management.
• Configuration and Firmware Maintenance