Filter
Top Products
For more product information, visit us on the web www.ZyXEL.com
65-100-108008B 10/07
Copyright © 2007 ZyXEL Communications Corp. All rights reserved. ZyXEL, ZyXEL logo are registered trademarks of ZyXEL Communications Corp. All other brands,
product names, or trademarks mentioned are the property of their respective owners. All specifications are subject to change without notice.
Specifications
System Compliance
• IEEE 802.3 10Base-T Ethernet
• IEEE 802.3u 100Base-Tx Ethernet
• IEEE 802.ab 1000Base-T Ethernet
• IEEE 802.3z
• IEEE 802.3x Flow control
• IEEE 802.1p Class of service, priority protocols
• IEEE 802.1Q VLAN tagging
• IEEE 802.3ad static port aggregation
Performance
• 48 Gbps/96 Gbps non-blocking switching fabric
• Switching Forwarding Rate 35.7 Mpps/71.4 Mpps
• Wire-speed performance
MAC and Packet Buffer
• 8 K MAC entries
• 512 KB Packet Buffer
Traffic Management and QoS
• Rate Limiting: Port-based bandwidth control
(64 kbps, 256 kbps, 1 Mbps, 10 Mbps, 64 Mbps,
100 Mbps, 1 Gbps)
• Port-based egress traffic shaping
• Broadcast Storm Control
• Congestion control on all ports
• IEEE 802.1p with 4 priority queues per port for
different types of traffic
• WRR (Weighted Round Robin)/SPQ scheduling
algorithm
• Jumbo frame support (up to 9 KB)
Auto VoIP
Auto VoIP module explicitly matches VoIP streams
in switches and assign the highest
priority for the following VoIP packets
• SIP—Session Initiation Protocol
• MGCP—Media Gateway Control Protocol
• SCCP—Skinny Client Control Protocol
Link Aggregation
• IEEE 802.3ad static port aggregation
• Up to 6 aggregation groups, per group
supports up to 8 ports
User Security and Authentication
• Specific MAC forwarding per port: only
specified MAC addresses can access the
network (Port Security)
• IEEE 802.1Q tag-based and port-based VLAN
• 256 static VLAN, up to 4 K dynamic VLAN
• Dynamic ARP
Auto DoS attack prevention
Auto DoS module explicitly matches attack patterns
in switches and prevent network outrage
Types of DoS Attacks can be prevented
• Land Attacks—These attacks result from sending
a specially crafted packet to a machine where the
source host IP address is the same as the
destination host IP address. The system attempts
to reply to itself, resulting in system lockup.
• Blat Attack—These switch result from sending
a specially crafted packet to a machine where
the source host port is the same as the destination
host port. The system attempts to reply to itself,
resulting in system lockup.
• SYNFIN Scans—SYNchronization (SYN,
ACKnowledgement (ACK) and FINish (FIN)
packets are used to initiate, acknowledge and
conclude TCP/IP communication sessions. The
following scans exploit weakness in the TCP/IP
specification and try to illicit a response from a
host to identify ports for an attack:
- Scan SYNFIN—SYN and FIN bits are set in the
packet
- Xmascan—TCP sequence number is zero and the
FIN, URG and PSH bits are set
- NULL scan—TCP sequence number is zero and
all control bits are zeros
- SYN with port <1024—SYN packets with source
port less than 1024
• Smurf Attacks—This attack uses Internet Control
Message Protocol (ICMP) echo requests packets
(pings) to cause network congestion or outrages
• Ping Flooding—This attack floods the target
network with ICMP packets
• SYN/SYN-ACK Flooding—This attack floods the
target network with SYN or SYN/ACK packets
Network Administration Security
• Password required for administrators
Network Management
• Web-based management
• Telnet
• SNMP v1, v2, v3
• IP management: static IP or DHCP client
• RMON-Lite
• Port mirroring: supports Source/Destination/
Both port mirroring
• Cable Diagnostic
MIB Information
• RFC1213 MIB II
• RFC1398 (Ether-like)
Hardware Specifications
• Support of auto-negotiation
• Support of auto MDI/MDI-X
• Ports: 20/44 1000Base-T, RJ-45 ports, 4 dual-
personality (RJ-45/ SFP slot) GbE ports
Physical Specifications
GS-1524
• 20 100/1000Base-T copper ports + 4 dual-
personality (RJ-45/SFP) Gigabit ports
• Dimensions: 438 (W) x 215 (D) x 44.45 (H) mm
• Weight: 3 Kg
GS-1548
• 44 100/1000Base-T copper ports + 4 dual-
personality (RJ-45/SFP) Gigabit ports
• Dimensions: 438 (W) x 240 (D) x 44.45 (H) mm
• Weight: 3.7 Kg
Power Requirements
• Input voltage of AC: 100 ~ 240 VAC, 50/60 Hz
• Max power rating of AC:
- GS-1524: 43 Watt
- GS-1548: 82 Watt
Environmental Specifications
• Operating temperature: 0
º
C ~ 45
º
C
• Storage temperature: -25
º
C ~ 70
º
C
• Operating humidity: 10% ~ 90%,
(non-condensing)
Certification
• UL 60950-1
• CSA 60950-1
• EN 60950-1
• IEC 60950-1