ZyXEL Communications ES-2024 Series, Руководство пользователя, Страница: 250 / 282

Appendix A Product Specifications
ES-2024 Series User’s Guide
250
Storage Environment Temperature: -25º C ~ 70º C (13º F ~ 158º F)
Humidity: 10 ~ 90% (non-condensing)
Fast Ethernet Ports 24 100Base-Tx ports
RJ-45 Ethernet cable connector
Auto-negotiation
Auto-MDI/MDI-X
Compliant with 802.3/802.3u
Back-pressure flow control in half duplex mode
802.3x flow control in full duplex mode
(ES-2024PWR only)
Power over Ethernet to 24 PoE ports (max. 15.4 Watt/port, 185Watt/system)
Power budget management
Gigabit Ethernet Ports 2 Dual Personality interfaces(1000Base-T and SFP redundant)
Supports 100/1000 full duplex mode only
Compliant with 802.3z/802.3ab
Copper/fiber interface auto-selection by signal detection (Fiber first)
Console Port D-Sub 9 pin Female (DCE)
System Monitoring Voltage:
1.25 V: +/- 6%
1.8 V: +/- 6%
3.3 V: +/- 6%
2.5 V: +/- 6%
Temperature:
CPU: 60 degrees C
MAC: 60 degrees C
Fan Speed: 3500~8000 rpm
Table 101 Feature Descriptions
FEATURE DESCRIPTION
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.
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 relay DHCP requests to DHCP servers 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.
Queuing Queuing is used to help solve performance degradation when there is
network congestion. Three scheduling services are supported: Strict
Priority Queuing (SPQ) and Weighted Round Robin (WRR). This allows
the Switch to maintain separate queues for packets from each individual
source or flow and prevent a source from monopolizing the bandwidth.
Table 100 Hardware Specifications (continued)
SPECIFICATION DESCRIPTION