ZyXEL Communications Dimension ES-4124, Руководство пользователя

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ES-4124 User’s Guide
Appendix A Product Specifications 349
A
P P E N D I X
A
Product Specifications
This section describes the general software features of the switch.
Table 115 Firmware Features
FEATURE DESCRIPTION
IP Routing Domain An IP interface (also known as an IP routing domain) is not bound to a
physical port. Configure an IP routing domain to allow the switch to route
traffic between different networks.
VLAN A VLAN (Virtual Local Area Network) allows a physical network to be
partitioned into multiple logical networks. Devices on a logical network
belong to one group. A device can belong to more than one group. With
VLAN, a device cannot directly talk to or hear from devices that are not in
the same group(s); the traffic must first go through a router.
VLAN Stacking Use VLAN stacking to add an outer VLAN tag to the inner IEEE 802.1Q
tagged frames that enter the network. By tagging the tagged frames
(“double-tagged” frames), the service provider can manage up to 4,094
VLAN groups with each group containing up to 4,094 customer VLANs.
This allows a service provider to provide different service, based on
specific VLANs, for many different customers.
MAC Address Filter Filter traffic based on the source and/or destination MAC address and
VLAN group (ID).
DHCP (Dynamic Host
Configuration Protocol)
Use this feature to have the switch assign IP addresses, an IP default
gateway and DNS servers to computers on your network.
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.
Differentiated Services
(DiffServ)
With DiffServ, the switch marks packets so that they receive specific per-
hop treatment at DiffServ-compliant network devices along the route
based on the application types and traffic flow.
Classifier and Policy You can create a policy to define actions to be performed on a traffic flow
grouped by a classifier according to specific criteria such as the IP
address, port number or protocol type, etc.
Queuing Queuing is used to help solve performance degradation when there is
network congestion. Three scheduling services are supported: Strict
Priority Queuing (SPQ), Weighted Round Robin (WRR) and Weighted
Fair Queuing (WFQ). This allows the switch to maintain separate queues
for packets from each individual source or flow and prevent a source
from monopolizing the bandwidth.
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.