Tanımlama
The DES-1009G is a Gigabit Switch with eight 10/100 Mbps N Way Ethernet ports and one 1000 Mbps Gigabit Ethernet port. The DES-1009G provides a workgroup solution helping to increase network throughput for increased server to client response. The DES-1009G is targeted at small to medium corporate business environments .
The DES-1009G strictly adheres to IEEE 802.3 10BASE-T, IEEE 802.3u 100BASE-TX, and IEEE 802.3z 1000BASE-TX standards. It utilizes the same packet structure format support for the CSMA/CD protocol. In addition, the DES-1009G supports full duplex and flow control. The DES-1009G delivers high-speed 10/100 Mbps Fast Ethernet switching and maximum flexibility by providing dynamic auto-sensing capabilities for 10/100/1000Mb Ethernet segments and workstations.
The DES-1009G utilities a store and forward switching scheme to support rate adaptation and protocol conversion. The DES-1009G supports non-blocking full wire speed data forwarding and filtering rate capabilities for each port. The DES-1009G also has built-in N Way auto-negotiation ports, which automatically identify and determine the correct transmission speed and duplex mode of the attached device.
The DES-1009G provides dynamic filtering through auto-learned MAC addresses and static filtering. In addition, The DES-1009G comes with a 4096 active MAC address entry table and hashing algorithm on address learning per device. The DES-1009G enables auto-aging capabilities and collision backpressure. The DES-1009G supports buffering allocation of 512 bytes each to optimize the performance on mixed network speeds.
Finally, the DES-1009G can help to protect a LAN from broadcast storms through rate filtering, which can control broadcast data and prevent unnecessary absorption of network bandwidth to keep the network speed constant. The DES-1009G provides 3 LEDs per port to connection speed, port status, and network activity. Additional switch LED, report real-time HTTP, ICQ and SMTP traffic.
Genel Özellikler
Standards
- IEEE 802.3 10BASE-T Ethernet (twisted-pair copper)
- IEEE 802.3u 100BASE-TX Fast Ethernet (twisted-pair copper)
- IEEE 802.3ab 1000BASE-T Gigabit Ethernet (twisted-pair copper)
- ANSI/IEEE 802.3 NWay auto-negotiation
- IEEE 802.3x Flow Control
Protocol
CSMA/CD
Data Transfer Rates
- Ethernet:
10Mbps (half duplex)
20Mbps (full duplex)
- Fast Ethernet:
100Mbps (half duplex)
200Mbps (full duplex)
- Gigabit Ethernet:
2000Mbps (full duplex)
Topology
Star
Network Cables
- 10BASE-T:
2-pair UTP Cat. 3, 4, 5 (100 m)
EIA/TIA-586 100-ohm STP (100 m)
- 100BASE-TX, 1000BASE-T:
UTP Cat. 5 (100m max.)
EIA/TIA-568 100-ohm STP (100m max.)
Full/half Duplex
- Full/half duplex for 10/100Mbps speeds
- Full duplex only for Gigabit speed
Media Interface Exchange
1 MDI-II/MDI-X uplink port (shared with Fast Ethernet port 8)
Twisted-pair Rx Reverse Polarity
Auto-correction
LED Indicators
- Per 10/100Mbps port: 100Mbps speed, Link/Act
- Per Gigabit port: 1000Mbps speed, Link/Act
- Per device: Power, Alert, HTTP, ICQ, SMTP
Transmission Method
Store-and-forward
MAC Address Table
4K entries per device
MAC Address Learning
Automatic update
Packet Filtering/Forwarding Rates (half duplex)
- Ethernet: 14,880 pps per port
- Fast Ethernet: 148,810 pps per port
- Gigabit Ethernet: 1,488,100 pps per port
RAM Buffer
2MB per device
Çözümler
Sipariş Bilgisi
DES-1009G 8 10/100Mbps ports, 1 1000BASE-T copper Gigabit port