Linksys SLM248G4S Operation manual

BUSINESS SERIES
PRODUCT DATA
Model: SLM248G4S
48-Port 10/100 + 4-Port Gigabit
Stackable Smart Switch
Cost-effective, secure switching with
simplified management for your
growing business
Growing businesses require cost-effective, networking solutions that can scale with ever-
changing business needs. The Linksys SLM248G4S Smart Switch brings a whole new level
of intelligence and security to the network infrastructure at a cost-effective price. It offers 48
10/100 Ethernet (copper) ports with four 10/100/1000 Gigabit Ethernet copper or optional
optical (SFP) interfaces for uplinking connected users to the core network.
Network security is a top priority in any size business; unauthorized access to the network
and mission critical data is a constant concern. The SLM248G4S is able to secure the network
through 802.1X port authentication and MAC Filtering. 802.1X requires clients to authenticate
themselves before the port will pass data.
The SLM248G4S switches provide resilient stacking for a stack of up to 192 ports. A stack of units
is managed as a single switch with one Web Management interface to manage all the units.
SLM248G4S can coexist in a stack with other Linksys Smart Stackable PoE and 24-port versions—
SLM224G4PS, SLM224G4S, and SLM248G4PS.
Businesses are recognizing the benefits of Voice over IP (VoIP) phone calling and are quickly
migrating their voice services to IP-based platforms, requiring their local area networks to support
both voice and data applications. The SLM248G4S’s extensive QoS features make the solution ideal
for real-time applications like Voice and Video. The four priority queues together with Weighted
Round Robin and Strict Priority scheduling techniques let network administrators quickly prioritize
real-time voice and video traffic over data traffic. Individual users or applications can also be
prioritized above others using various Class of Service options—by port, Layer 2 priority (802.1p),
and Layer 3 priority (TOS or DSCP). Intelligent Broadcast, Multicast, and Unknown Unicast storm
control minimizes and contains the effects that these types of storms have 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 network administrators to
control network access and traffic flow.
The SLM248G4S also includes features for network expansion and faster throughput performance.
Link aggregation enables network administrators to create multiple high-bandwidth trunks between
switches. This provides a level of reliability because the system will continue to operate if one of the links
breaks. Spanning Tree (STP) and Fast Spanning Tree allow administrators to build a mesh of switches
increasing the availability of the system.
The simplified user interface provides an intuitive, secure management platform enabling administrators
to better utilize the comprehensive feature set of the switch, resulting in a better optimized, more secure
network.
Easy-to-use Web browser
interface makes installation
quick and effortless
Grow your network with
options like Resilient
Stacking and Link
Aggregation
802.1X port authentication
and MAC address filtering
brings network security
down to the switch port
level
Advanced QoS enables the
network to be optimized for
your networked applications,
including voice, video and
data storage
SLM248G4S

PRODUCT DATA
BUSINESS SERIES
Features
48 - 10/100 Switched RJ-45
ports deliver up to 9.6 Gbps
of throughput
2 shared 10/100/1000 mini-
GBIC ports
Switching Capacity delivers
wire-speed performance
at 17.6 Gbps non-blocking
capacity
WebView monitoring
allows administrators to
view the current status and
configuration using their
favorite web browser
Auto MDI/MDIX per port
allows for automatic Cable
detection
Port-based and 802.1q-
based VLANs support up to
128 VLANs
Port configuration settings
for Link, Speed, Auto MDI/
MDIX, Flow Control, and
more
Fully rack-mountable using
the included rack mounting
hardware
MAC Address table supports
up to 8K MAC Address
entries
Optimal platform to support
real-time applications,
such as voice and video,
by providing features like
IGMP snooping, multiple
queues (4) with appropriate
scheduling techniques,
prioritization of traffic based
on port, 802.1p, IP TOS/
precedence/DSCP, and line
rate forwarding mechanisms
•
•
•
•
•
•
•
•
•
•
48-Port 10/100 + 4-Port Gigabit Stackable Smart
Switch
Specifications
Model SLM248G4S
Ports 48 RJ-45 Connectors for 10BASE-T/100BASE-TX,
4 RJ-45 Connectors for 10BASE-T/100BASE-TX/1000BASE-T with
2 Shared SFP Slots and 2 Gigabit Ports
Buttons None
Cabling Type UTP CAT 5 or better for 10BASE-T/100BASE-TX,
UTP CAT 5e or better for 1000BASE-T
LEDs Power, Link/Act, Speed
Performance
Switching Capacity 17.6 Gbps, Non-blocking
MAC Table Size 8K
Number of VLANs 128
Stacking
Stack Operation Maximum Stack Size: 192 Ports
Maximum no. of Units in Stack: 6 (with SLM224G4S)
Hot Insertion and Removal
Ring and Chain Stacking Options
Master and Backup Master for Resilient Stack Control
Auto-numbering or Manual Configuration of Units in Stack
Management
Web User Interface Built-in Web UI for easy browser-based configuration (HTTP)
SNMP SNMP version 1, 2c, 3
SNMP MIBs RFC1213 MIB-2, RFC2863 Interface MIB, RFC2665 Ether-like MIB,
RFC1493 Bridge MIB, 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
RMON Embedded Remote Monitoring (RMON) software agent supports four
RMON groups (history, statistics, alarms, and events) for enhanced traffic
management, monitoring, and analysis
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 or RMON probe
Other Management Switch Audit Log
DHCP Client
BootP
SNTP
Xmodem Upgrade
Cable Diagnostics
Port Mirroring
PING
Security Features
IEEE 802.1x 802.1x - RADIUS Authentication, MD5 Encryption
Access Control ToS/DSCP
Availability
Link Aggregation Link Aggregation Using IEEE 802.3ad LACP
Up to 8 Ports in Up to 8 Trunks
Storm Control Broadcast and Multicast
Spanning Tree IEEE 802.1d Spanning Tree, Fast Linkover
IGMP Snooping IGMP (v1/v2) Snooping provides for fast client joins and leaves of multicast
streams and limits bandwidth-intensive video traffic to only the requestors
QoS
Priority Levels 4 Hardware Queues
Scheduling Priority Queueing and Weighted Round Robin (WRR)
Class of Service Port-based
802.1p VLAN Priority-based
IPv4 IP Precedence/ToS/DSCP

PRODUCT DATA
BUSINESS SERIES
Linksys
A Division of Cisco Systems, Inc.
121 Theory
Irvine, CA 92617 USA
E-mail: [email protected]
Web: 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 website
at www.linksys.com
Check the product package and contents for specific features supported. 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 © 2007 Cisco Systems, Inc. All rights reserved. Other brands
and product names are trademarks or registered trademarks of their respective holders.
7092710A-AI Model: SLM248G4S
Features (continued)
Enhanced QoS functions
including rate limiting for
ingress/egress and per flow
at 64kbps granularity
HTTP interface
User/Network security
via 802.1x (with Radius
authentication) and MAC-
based filtering
Containment of storms—
Broadcast and Multicast
Expandability and
availability increased across
multiple switches using Link
Aggregation
Port Trunking for up to 8
groups with up to 8 ports
per group allows you to
increase your bandwidth
for each uplink or Server
connection
SNMP and RMON
management expand your
visibility options
•
•
•
•
•
•
•
Layer 2
VLAN Port-based and 802.1q-based VLANs
Management VLAN
HOL Blocking Head of Line Blocking Prevention
Jumbo Frame Supports Frame size up to 10Kbytes
Standards
802.3 10BASE-T Ethernet,
802.3u 100BASE-TX Fast Ethernet,
802.3ab 1000BASE-T Gigabit Ethernet,
802.3z Gigabit Ethernet,
802.3x Flow Control
Environmental
Dimensions (W x H x D) 17.32" x 1.75" x 13.81" (440 x 44.45 x 350.8 mm)
Weight 8.77 lb (3.98 kg)
Power 100-240V 0.5A
Certification FCC Part 15 Class A, CE Class A, UL CSA (CSA22.2), CE mark, CB
Operating Temp. 32 to 104°F (0 to 40°C)
Storage Temp. -4 to 158°F (-20 to 70°C)
Operating Humidity 20 to 95%, Noncondensing
Storage Humidity 5 to 90%, Noncondensing
Package Contents
One SLM248G4S Switch
One AC Power Cord
One Rack Mounting Kit with Brackets and Hardware
One CD with User Guide in PDF Format
One Online Registration Card
Console Cable
Minimum Requirements
Web-based Utility: Web Browser—Microsoft Internet Explorer (version 5.5 or above)
Cat5 Ethernet Network Cable
•
•
•
•
•
•
•
•