FEATURES 6 (10/100/1000Mbps) Gigabit Ethernet (TP) switching ports are compliant with IEEE 802.3, 802.3u, and 802.3ab. 2 Gigabit TP/SFP fiber are dual media ports with auto detected function. Supports auto-negotiation for configuring speed and duplex-mode. Supports 802.3x flow control for full-duplex ports. Supports collision-based and carrier-based backpressure for half-duplex ports. Any ports can be in disable mode, force mode or auto-polling mode. Supports Head of Line (HOL) blocking prevention. Supports broadcast storm filtering. Auto-aging with programmable inter-age time. Supports 802.1p Class of Service (CoS) with 2-level priority queuing. Supports port sniffer function. Programmable maximum Ethernet frame size of 1518, 1532, or 9208 bytes (jumbo frame.) Supports port-based VLAN, 802.1Q tag-based VLAN. Efficient self-learning and address recognition mechanism enables forwarding rate at wire speed. Web-based management provides the ability to completely manage the switch from web browser. SNMP/Telnet interface delivers complete in-band management. Supports IEEE 802.1d Spanning Tree Protocol (STP). Supports IEEE 802.1w Rapid Spanning Tree Protocol (RSTP). Supports IEEE 802.1x port-based VLAN classification. Supports IP Multicasting to implement IGMP Snooping function. Supports IEEE 802.3ad port trunking with flexible load distribution and failover function. Supports ingress port security mode for VLAN Tagged and Untagged frame process. Supports SNMP MIB2 and RMON sampling with sampled packet error indication.

TECHNICAL SPECIFICATIONS
Model: GS2208B

Standards: IEEE 802.3 / 802.3ab / 802.3z / 802.3u / 802.3x

Connectors / Slots:
Front Panel
— Eight (8) 10/100/1000Mbps Gigabit Ethernet RJ-45 auto MDI/MDI-X (Ports 1 to 8)
— Two (2) SFP Slots for 1000Mbps Gigabit fiber modules
[ Note: Ports 7's and 8's RJ-45 connectors will be automatically disabled once SFP modules have been installed. Then, the fiber modules will become Ports 7 and 8! ]
Rear Panel
— One (1) RS-232 DB-9 Male Console port
[ Setting: Baud 57600, Data 8, Stop 1, Parity N, Flow NONE ]

Add-On Modules (Sold Separately):
DX-SFP.SX — 1000Base-SX Multi-Mode SFP Duplex-LC, 850nm
DX-SFP.L10 — 1000Base-LX Single-Mode/10km SFP Duplex-LC, 1310nm
DX-SFP.L40 — 1000Base-LX Single-Mode/40km SFP Duplex-LC, 1310nm

Data Transfer Rate:
10/100/1000Mbps (auto-negotiation or forced-mode) for TP 1000Mbps for fiber

Cable / Max Distance:
50/125, 62.5/125µm Multi-Mode fiber, 220m
9/125µm Single-Mode fiber, 10~40km (SFP module dependent)
Category 5 or up UTP, 100m for 100Base-TX and 1000Base-T
Category 3 or up UTP, 100m for 10Base-T

Duplex Mode:
Full for 1000Base-SX/LX/T, and Full/Half (auto-sense or forced-mode) for 10/100Base-TX
MAC Address and Self-learning:
8K MAC addresses and 4K VLAN table entries
Buffer Memory: Embedded 144KB frame buffer
Flow Control:
IEEE 802.3x compliant for Full-duplex
Back pressure flow control for Half-duplex

LEDs:
Unit — POWER, CPU
Per TP Port — LINK/ACT, 10/100/1000
Per SFP Port — LINK/ACT

Power Requirement: 100~240V AC, 50/60Hz, max 13W consumption
Operating Temperature: 0° to 40° C
Humidity: 5% to 90%
Dimension:
44 x 220 x 130.5mm (H x W x D), 19" Rack-mountable with optional brackets
Safety: FCC Class A, CE Mark Approval, RoHS Compliance

MANAGEMENT SUPPORT
System Configuration
Auto-negotiation supports on 10/10/1000Base-T ports, web browser or console interface can set transmission speed (10/100/1000Mbps) and operation mode (Full/Half duplex) on each ports, set VLAN group, set Trunk connection.

Management Agent
SNMP supports; MIB II, Bridge MIB, RMON MIB

Spanning Tree Algorithm
IEEE 802.1D

VLAN Function
Port-based/802.1Q-Tagged, allowed up to 256 active VLANs in one switch
Trunk Function
Ports trunk connections allowed

IGMP
IP Multicast Filtering by passively snooping on the IGMP Query

Bandwidth Control
Support by-port Egress/Ingress rate control
Quality of Service (QoS)
Referred as Class of Service (CoS) by IEEE 802.1P standard.
— Four queues per port
— Packet transmission schedule using Weighted Round Robin (WRR)
— User-defined weight
— Classification of packet priority can be based on either a VLAN tag on packet or a user-defined port priority

Port Security
Limit number of MAC addresses learned per port, static MAC addresses stay in the filtering table

Inter-networking Protocol
Bridging: 802.1D Spanning Tree
IP Multicast: IGMP Snooping, IP Multicast Packet Filtering, Maximum of 256 active VLANs, and IP Multicast sessions

Networking Management
One RS-232 port as local control console
Telnet remote control console
SNMP Agent: MIB-2 (RFC1213), Bridge MIB (RFC1493), RMON MIB (RFC1757) - statistics, VLAN MIB (802.1Q)
Web browser supports based on HTTP Server and CGI parser TFTP
software-upgrade capability (Default access IP: 192.168.1.1)