MODEL- SLM248G4S          VENDOR- LINKSYS
    
FEATURES- Business series Smart Gigabit Ethernet Switch
       48-port 10/100 + 4-port Gigabit Smart Switch with Resilient 
        Clustering Technology!  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 and 
        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 clustering of up four 
        switch units or up to 192 ports. An entire switch cluster can be 
        managed as a single switch with one Web Management interface to 
        manage all the units. SLM248G4S can coexist in a switch cluster 
        with other Linksys Smart Switches that support resilient clustering 
        technology - 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 makes 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 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) allows admins to avoid network loops and to build a mesh of 
        switches to increase the availability of their network.
       The simplified user interface provides an intuitive, secure 
        management platform enabling admins to better utilize the 
        comprehensive feature-set of the switch, resulting in a better 
        optimized, more secure network.
    Includes Gigabit Smart Switch, AC Power Cord, Rack Mounting Kits with 
      Bracket and Hardware, CD with User Guide in PDF Format, Online 
      Registration Card, Console cable.
* Easy-to-use Web browser interface makes installation quick and effortless
* Grow your network with options like Link Aggregation, Spanning Tree and 
  Portfast.
* 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.
     
  -- SPECIFICATIONs ------------------------------------
CONNECTORS   - (48) 10BaseT/100BaseTX/RJ45 ports
               ( 4) RJ-45 Connectors for 10BaseT/100BaseTX/1000BaseT
               ( 2) Shared SFP Slots and 2 Gigabit Ports
BUTTONS      - none
CABLE TYPE   - UTP CAT 5 or better for 10BASE-T/100BASE-TX
               UTP CAT 5e or better for 1000BASE-T
INDICATORS   - LEDs for Power, Link/Act, Speed
PERFORMANCE  - Switching Capacity: 17.6 Gbps, non-blocking
               MAC Table Size    : 8K
               Number of VLANs   : 128
SWITCH CLUSTER OPERATION-
               Switch Cluster 
                             Size: 192 Ports
               Max. Units in
                   Switch Cluster: 6 (with SLM224G4S)
               Hot Insertion and Removal
               Ring and Chain Options
               Master and Backup Master for Resilient Cluster Control
               Auto-numbering or Manual Configuration of Units in Switch 
                 Cluster.
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     - IEEE 802.1x       : 802.1x Authentication: RADIUS; EAP-TTLS, 
                                     PEAP, EAP-MD5, LEAP, EAP-TLS.
               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
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
REQUIREMENTS - Web-Based Utility: Microsoft Internet Explorer (version 5.5 
                 or above) Web Browser.
               Cat5 Ethernet Network Cable
APPROVALS    - FCC Part15 Class A, CE Class A, UL, cUL, CE mark, CB
POWER SOURCE - Internal power supply, 100~240 VAC
DIMENSIONS   - 17.32"w x 1.75"h x 13.81"d     WT.- 8.77 lbs.
    www.linksys.com