Linksys SRW248G4 User Manual

Secure, reliable, intelligent, high density
managed switching for growing businesses

The Linksys WebView Managed switch allows you to expand your network securely. Configuration of the switch is
secured using SSL for Web access and SSH for Telnet access. User control is secured using 802.1x security using a
RADIUS authentication mechanism and can also be controlled using MAC filtering.

Extensive QoS features makes the solution ideal for real-time applications like Voice and Video. The 4 priority queues
together with the Weighted Round Robin and Strict Priority scheduling techniques facilitate efficient co-existence of
real-time traffic with data traffic allowing them each to meet their QoS needs. Individual users or applications can be
prioritized above others using various Class of Service options - by port, layer 2 priority (802.1p), Layer 3 priority (TOS or
DSCP*), or IPv6 Traffic Class*. Intelligent Broadcast, Multicast, and Unknown Unicast storm control minimizes and con­tain the effect of these types of traffic on regular traffic. IGMP Snooping limits bandwidth-intensive video traffic to only
the requestors without flooding to all users. Incoming traffic can be policed and outgoing traffic can be shaped
allowing you to control network access and traffic flow.

There are features that allow you to expand and grow your network of switches. Link aggregation allow multiple high­bandwidth trunks between switches to be setup. This also provides a level of reliability in that the system continues to
operate if one of the links break. Spanning Tree(STP), Fast Spanning Tree*, and Multiple Spanning Tree* allow you to
build a mesh of switches increasing the availibility of the system.

The rich management functionality of the WebView switches includes SNMP, RMON, Telnet, and HTTP Management
options, allowing you to flexibly integrate and manage these devices in your network.

Optimized for grow­ing businesses with 4
expandable Gig
ports

Secure manage­ment via SSH/SSL and
secure user control
via 802.1x & MAC fil­tering

IGMP snooping, L2/L3
COS, queuing &
scheduling makes
solution ideal for
Voice/Video

* Future firmware release

Intelligent traffic
management with
Rate Limiting, Polic­ing, Shaping, and
Storm control

48-Port 10/100 + 4-Port

Gigabit Switch

WIRED

with WebView

Product Data

Model No.

SRW248G4

48-Port 10/100 + 4-Port Gigabit Switch

with WebView

Features

• 48 - 10/100 Switched RJ-45 ports deliver
up to 200Mbps of throughput per port

• 4 - 10/100/1000 Switched RJ-45 Gb Uplink
Ports (with 2 shared mini-GBIC ports)

• WebView monitoring allows administra­tors to view the current status and config­uration using their favorite web browser

• Port based and 802.1q based VLAN's sup­port up to 256 VLANS

• Port Trunking for up to 8 groups allows you
to increase your bandwidth for each
uplink or Server connection

• Port configuration settings for Link, Speed,
Auto MDI/MDIX, Flow Control, and more

• Fully rack-mountable using the included
rack-mounting hardware

• Auto MDI/MDIX per port allows for auto­matic Cable detection

• MAC Address table supports up to 8K
MAC Address entries

• Optimal platform to support real-time
applications like voice and video by pro­viding features like IGMP snooping, multi­ple queues (4) with appropriate
scheduling techniques, prioritization of
traffic based on L2/L3 priority*, and line
rate forwarding mechanisms

• Secure control via SSH for Telnet interface
and SSL for HTTP interface

• User/Network security via 802.1x (with
Radius authentication) and MAC-based
filtering

• Containment of storms - Broadcast, Multi­cast, and Unknown Unicast

• Expandability and availability increased
across multiple switches using Link Aggre­gation

• SNMP and RMON management expand
your visibility options

Linksys
A Division of Cisco Systems, Inc.
18582 Teller Avenue
Irvine, CA 92612 USA

E-mail: [e-mail]

[e-mail]

Web: http://www.linksys.com

Linksys products are available in more than 50
countries, supported by 12 Linksys Regional Offices
throughout the world. For a complete list of local
Linksys Sales and Technical Support contacts, visit
our Worldwide Web Site at www.linksys.com.

Specifications

Ports 48 RJ-45 connectors for 10BASE-T and 100BASE-TX, 4 RJ-45 connectors for

Cabling Type UTP CAT 5 or better for 10BASE-T/100BASE-TX, UTP CAT 5e or better for 1000BASE-T
LED Indicators Power, Link/Act, Speed

Performance

Switching Capacity 17.6 Gig non-blocking
MAC Table Size 8k
Number of VLANs 256 - Static (Today) and Dynamic (Future)

Management

Web User Interface Built-in Web UI for easy browser-based configuration (HTTP/HTTPS)
SNMP SNMP version 1, 2, 3 with support for traps
SNMP MIBs RFC1213 MIB-2, RFC2863 Interface MIB, RFC2665 Ether-like MIB, RFC1493 Bridge MIB,

RMON Embedded Remote Monitoring (RMON) software agent supports four RMON groups (history,

Firmware Upgrade Web Browser upgrade (HTTP), TFTP upgrade
Port Mirroring Traffic on a port can be mirrored to another port for analysis with a network analyzer

Other Management RFC854 Telnet (Menu-driven configuration), Secure Shell (SSH) and Telnet Management,

Security

IEEE 802.1x 802.1x - RADIUS Authentication. MD5 Encr yption
Access Control Filtering: MAC-based*

Availability

Link Aggregation Link Aggregation using IEEE 802.3ad LACP, Up to 8 ports in up to 8 trunks
Storm Control Broadcast, Muticast, and Unknown Unicast
Spanning Tree IEEE 802.1d Spanning Tree, IEEEE 802.1s Multiple Spanning Tree*, IEEE 802.1w Rapid

IGMP Snooping IGMP (v1/v2) snooping provides for fast client joins and leaves of multicast streams and

QoS

Priority Levels 4 Hardware queues
Scheduling Priority Queueing and Weighted Round Robin (WRR)
Class of Service Port-based, 802.1p VLAN priority based, IP TOS/DSCP based,

Rate Limiting Ingress Policer, Egress Shaper

Layer 2

VLAN Port-based and 802.1q based VLANs, Private VLAN Edge (PVE), Management VLAN
HOL Blocking Head of line blocking prevention
Mini Jumbo Frame Supports frames up to 1600 bytes
Dynamic VLAN GVRP* - Dynamic VLAN Registration

Standards

Standards 802.3i 10BASE-T Ethernet, 802.3u 100BASE-TX Fast Ethernet, 802.3ab 1000BASE-T Gigabit

Environmental

Dimensions 16.93" x 1.75" x 13.78" (430 mm x 44.45 mm x 350 mm)
Unit Weight 8.6 lbs. (3.9 kg)
Power Input internal switching power
Certifications FCC Part15 Class A, CE Class A, UL, cUL, CE mark, CB
Operating Temp 32ºF to 104ºF (0ºC to 40ºC)
Storage Temp. -4ºF to 158ºF (-20ºC to 70ºC)
Operating Humidity 10% to 90%, Non-Condensing
Storage Humidity 10% to 95%, Non-Condensing
Warranty 5 years

Minimum Requirements

• Web-based Configuration Java-enabled Browser

• Cat5 Ethernet Network Cable

• TCP/IP Protocol installed on each computer within
the network

• Network Adapter installed in each computer

• Network Operating System (e.g. Windows®, Linux,
MacOS X)

10BASE-T/100BASE-TX/1000BASE-T with 2 shared SFP slots, Auto MDI/MDI-X,
Autonegotiate/Manual setting

RFC2674 Extended Bridge MIB (P-bridge, Q-bridge), RFC2819 RMON MIB (groups 1,2,3,9
only), RFC2737 Entity MIB, RFC 2618 RADIUS Client MIB

statistics, alarms, and events) for enhanced traffic management, monitoring, and analysis.

or RMON probe.

Telnet Client, SSL security for Web UI, Switch Audit Log, DHCP Client, BootP, SNTP, Xmodem
upgrade, Cable Diagnostics, PING, Traceroute

Spanning Tree*, Fast Linkover*

limits bandwidth-intensive video traffic to only the requestors.

IPv4 & IPv6 Traffic Class based COS

Ethernet, 802.3z Gigabit Ethernet, 802.3x Flow Control

* Future firmware release

Package Contents

• One SRW248G4 Switch

•One Power Cord

• One Rack Mounting Kit

• One CD with User Guide in
PDF Format

• One Registration Card

•Console Cable

Specifications are subject to change without notice. Linksys is a registered trademark or trademark of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries. Copyright © 2005
Cisco Systems, Inc. All rights reserved. Other brands and product names are trademarks or registered trademarks of their respective holders.

SRW248G4-DS-51028 KL

Product Data

Model No.

SRW248G4