3Com SuperStack 3 3812 User manual

•Fixed Gigabit Ethernet workgroup
and wiring closet switch family
• Advanced features including
QoS, Security, and Network
Management
• Superior standards-based
network resiliency
• Wirespeed, non-blocking
performance in a 1U form
factor
3Com®SuperStack®3Switch 3800 Family
Key Benefits
Product Overview
Leveraging over 25 years of delivering
innovative products that provide high
availability, scalability, connectivity,
application awareness, security, and
management, the 3Com®SuperStack®3
Switch 3800 family is ideal for high-
performance networks that require
industry-leading switching, comprehensive
functionality, and applications and
bandwidth control.
These fixed-configuration Gigabit-to-the-
desktop switches position the network for
the future at prices comparable to 10/100
switches. Tri-speed operation at 10, 100,
and 1000Mbps allows easy migration to
Gigabit speeds. The SuperStack 3 Switch
3800 family installs and operates straight
out of the box, facilitating ease of use.
Connectivity & Performance
These switches are available in three
configurations:
•SuperStack 3 Switch 3812: 12 10/100/1000
ports, four of which are dual-personality
•SuperStack 3 Switch 3824: 24 10/100/1000
ports, four of which are dual-personality
•SuperStack 3 Switch 3848: 48 10/100/1000
ports, four of which are dual-personality
The dual-personality ports support
10/100/1000BASE-T or, via small form-
factor pluggable (SFP) transceivers,
1000BASE-SX, -LX, or -LH70 is
supported in the four SFP ports. This
flexibility makes it an ideal solution for
high-performance desktops, server farms,
or shared-access environments.
Through its advanced feature set, the
SuperStack 3 Switch 3800 familyis able
to deliver wirespeed performance to the
network.
Quality of Service
The SuperStack 3 Switch 3800 family helps
enable maximum control of users and
applications, thus providing for an optimized
network infrastructure. QoS capabilities
help assure optimal performance to real-time
applications such as voice and video. Port-
based rate limiting enables the bandwidth
on each port to be restricted, so power users
can receive the full bandwidth available,
while other users can be throttled down,
preserving network bandwidth and
allowing maximum control of network
resources. Built-in packet prioritization
helps enable mission-critical applications
to continue running in heavily loaded
networks.
Security
User, network, and management security
features of the SuperStack 3 Switch 3800
family make it the ideal solution for
customers who want to enhance LAN
security. These switches can help prevent
unauthorized accessing of the network
and Denial of Service attacks; secure
management of the switches helps ensure
that only authorized IT administrators
haveaccess to switch management.
Network Management
Network management is possible through
the embedded web interface, command
line interface, or an SNMP management
station. This can be further simplified with
the use of 3Com Network Supervisor for
configuration and troubleshooting of
multiple devices on the network.
Service
3Com products are backed by 3Com Global
Services and authorized partners with
demonstrated expertise in network
assessment, implementation, and
maintenance. Ask about which 3Com
Network Health Check, installation
services,and maintenance service packages
are available in your area.
DATA SHEET
FREEDOM TO CHOOSE A BETTER NETWORK 1

3COM®SUPERSTACK®3SWITCH 3800 FAMILY
2
Features
PERFORMANCE
Backplane Capacity SuperStack 3 Switch 3812: 24 Gbps; Switch 3824: 48 Gbps; Switch 3848: 96 Gbps
Forwarding Rate SuperStack 3 Switch 3812: 17.8 Mpps; Switch 3824: 35.7 Mpps; Switch 3848: 71.0 Mpps
Store-and-forward switching
LAYER 2 SWITCHING
MAC Address 16K MAC addresses
Secure MAC addresses (1,024 addresses)
VLAN 255 VLANs (IEEE 802.1Q)
Link Aggregation Manual and Automatic (LACP) as per IEEE 802.3ad
Auto-negotiation Auto-negotiation of port speed, duplex, and connection (MDI/MDIX)
Traffic Control IEEE 802.3x full-duplex flow control
Back pressure flow control for half-duplex
Jumbo Frames Support 9K packets
CONVERGENCE
Priority Queues Eight hardware queues per port
Weighted Round Robin queuing
Strict priority queuing
QoS Priority based on:
•User-specified MAC address range
•User-specific IP address
•DSCP (DiffServ Code Point)
•IEEE 802.1p Class of Service (CoS) priority
•TCP/UDP destination port number
•Default port priority
Auto classification of 3Com IP telephony solutions traffic
Rate Limiting Ingress and egress rate limiting, port-based:
•1Mbps increments from 1M to line rate
Multicast Multicast snooping filtering
256 multicast groups
IGMP v1 and v2
IGMP Query
SECURITY
Network and Switch Login IEEE 802.1X user authentication
•RADIUS authentication
•Secure mode (locks MAC address)
Packet Filtering Wirespeed packet filtering in hardware
Port-based Access Control Lists (ACLs)
Supports a maximum of 100 ACL rules per system (DSCP and TCP/UDP port-based CoS)
ACLs filter on source/destination IP address
Switch Management RADIUS management of switch passwords
Trusted IP management addresses
Telnet
SSH v1, v2 (56 bit DES)
SSL (HTTPS)
•40 bit
•56 bit DES
\
FREEDOM TO CHOOSE A BETTER NETWORK

3
3COM®SUPERSTACK®3SWITCH 3800 FAMILY
Features (continued)
RESILIENCY
Spanning Tree IEEE 802.1D Spanning Tree Protocol (STP)
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
•Backward-compatible with STP
•Fast-start mode
•Spanning tree enable/disable per port
Link Aggregation IEEE 802.3ad (LACP):
•Twelve groups (SuperStack 3 Switch 3812 and 3824)
•Twenty-four groups (Switch 3848)
•Eight ports in each group
Support for 3Com Advanced Redundant Power Supply; provides backup power to the switch
(Switch 3848 only)
Dual software images
Backup and restore of switch settings
MANAGEMENT
Remote Management SNMP v1 and v2
User-selectable management VLAN
Switch Access Levels Five user accounts
Software Dual images
Backup and restore
TFTP configuration: upload/download
TFTP agent: upload
Configuration Command line
Serial Console Port
•SuperStack 3 Switch 3812 and Switch 3824: 9-Way D-Type
•Switch 3848: RJ-45
Telnet
Web-based
Time Simple Network Time Protocol (SNTP)
Mirror port / RAP (Roving Analysis Port) One-to-one
RMON (Remote Monitoring) Four groups: statistics, history, alarm, and events
IP Address Allocation DHCP
Manual
Graphical Management 3Com Network Management applications:
• 3Com Network Director for comprehensive, turn-key network management for the enterprise.
•3Com Network Administrator for comprehensive management under HP OpenView for Windows.
•3Com Network Supervisor for basic, turn-key network management for small and
medium businesses (copy provided with product):
·Topology discovery
·Change management reporting
·Capacity planning
·Event logging
·Fault identification and troubleshooting
·Utilization monitoring
• 3Com Enterprise Management Suite for flexible, extensible management in advanced
enterprise IT environments
FREEDOM TO CHOOSE A BETTER NETWORK

3COM®SUPERSTACK®3SWITCH 3800 FAMILY
Ordering Information PRODUCT DESCRIPTION 3COM SKU
3Com SuperStack 3 Switch 3812 3C17401
12-port 10/100/1000 with four SFP ports (SFPs sold separately)
3Com SuperStack 3 Switch 3824 3C17400
24-port 10/100/1000 with four SFP ports (SFPs sold separately)
3Com SuperStack 3 Switch 3848 3CR17402-91
48-port 10/100/1000 with four SFP ports (SFPs sold separately)
SFPs (LC connector)
3Com 1000BASE-SX SFP Transceiver (multimode) 3CSFP91
3Com 1000BASE-LX SFP Transceiver (multimode, single-mode) 3CSFP92
3Com 1000BASE-LH70 SFP Transceiver (single-mode) 3CSFP97
Redundant Power Options
3Com SuperStack 3 Advanced Redundant Power System 3C16071B
3Com SuperStack 3 Advanced Redundant Power System, 325W Power Module Type 3 3C16075
Port Capacities
SuperStack 3 Switch 3812: 12 10BASE-T/100BASE-
TX/1000BASE-T ports; 4 SFP Gigabit ports
SuperStack 3 Switch 3824: 12 10BASE-T/100BASE-
TX/1000BASE-T ports; 4 SFP Gigabit ports
SuperStack 3 Switch 3848: 48 10BASE-T/100BASE-
TX/1000BASE-T ports; 4 SFP Gigabit ports
Four of the above 10/100/1000 ports are dual-person-
ality: they or the SFP ports can be operational
SFP ports accommodate 1000BASE-SX, 1000BASE-LX or
1000BASE-LH70 SFPs (sold separately)
Dimensions
Height: 43.6 mm (1.7 in or 1U)
Width: 440 mm (17.3 in)
Depth:
Switch 3812 and 3824: 325 mm (12.7 in)
Switch 3848: 415 mm (16.4 in)
Weight:
Switch 3812: 3.7 kg (8.2 lb)
Switch 3824: 4.0 kg (8.8 lb)
Switch 3848: 5.0 kg (11.0 lb)
Performance
Switching capacity:
Switch 3812: 24 Gbps
Switch 3824: 48 Gbps
Switch3848: 96 Gbps
Forwarding rate:
Switch 3812: 17.8 Mpps
Switch3824: 35.7 Mpps
Switch 3848: 71.0 Mpps
Wirespeed performance
16,000 MACaddresses supported
Power Supply
Input voltage 90-240 VAC autoranging
Operating frequency: 47-63 Hz
Maximum current: 1.2A
Maximum power: 148 W
Heat dissipation: 717 BTU
CPU
MPC8245 (466Mhz)
32MB Flash memory
128MB Processor memory
4MB Packet buffer memory
Environmental Requirements
Operating temperature: 0° to 40°C (32° to 104°F)
Storage Temperature: -40° to +70°C (-40° to +158°F)
Operating Humidity: 10% to 90% relative humidity
noncondensing
MTBF
21 years (184,000 hours)
Industry Standards Supported
Ethernet Protocols
IEEE 802.1D (STP)
IEEE 802.1p (CoS)
IEEE 802.1Q (VLANs)
IEEE 802.1w (RSTP)
IEEE 802.1X (Security)
IEEE 802.3ab (Copper Gigabit)
IEEE 802.3ad (Link Aggregation)
IEEE 802.3i (10BASE-T)
IEEE 802.3u (Fast Ethernet)
IEEE 802.3x (Flow Control)
IEEE 802.3z (Fiber Gigabit)
Administration Protocols
RFC 1812 (IPv4)
RFC 783 (TFTP)
RFC 768 (UDP)
RFC 791 (IP)
RFC 793 (TCP)
RFC 2474 (DiffServ)
RFC 2131 (DHCP)
RFC 2138 (RADIUS Authentication)
Management, including MIBs Supported
RFC 1157 (SNMP v1/v2c)
RFC 1213 (MIB II)
RFC 1398 (Ethernet MIB)
RFC 1493 (Bridge MIB)
RFC 1573 (Private IF MIB)
RFC 1757 (RMON MIB)
RFC 2011 (IP-MIB)
RFC 2012 (TCP-MIB)
RFC 2013 (UDP-MIB)
RFC 2037 (Entity MIB)
RFC 2618 (RADIUS Authentication Client MIB)
RFC 2665 (Ethernet-MIB)
RFC 2674P (P-BRIDGE-MIB)
RFC 2674Q (Q-BRIDGE-MIB)
RFC 2737 (Entity MIB)
RFC 2819 (RMON MIB)
RFC 2863 (IF-MIB)
IEEE8021-PAE-MIB (IEEE) (Network Login)
Safety Agency Certifications
UL 60950-1
IEC 60950: 2001; all national deviations
EN 60950: 2001; all national deviations
CSA 22.2 # 60950-00
Emissions
CISPR 22: 1995; Class A
FCC Part 15 subpart B, Class A
EN 55022: 1998; Class A
ICES -003 Class A
AS/NZS 3548 Class A
EN 61000-3-2: 2000
EN 61000-3-3: 1995 +A1
Immunity
EN 55024: 1998
Management
SNMP, Web, and Telnet support
RMON-1
RMON Groups: Statistics, History, Alarms and Events
Management through 3Com management applications
-3Com Network Supervisor
-3Com Network Director
-3Com Network Administrator
-3Com Enterprise Management Suite
Warranty
Limited Lifetime Hardware Warranty. See
www.3com.com/warranty for details.
Other Benefits
Other Service Benefits: Advance hardware replacement
with sameday shipment for North America and
Western Europe. Next day shipment for rest of world.
Calls must be received by published cut-off times.
90 days of telephone technical support. Limited software
updates.
See www.3com.com/warranty for more detail.
Register products at http://eSupport.3com.com/.
Service
Americas:
http://www.3com.com/products/en_US/global_services/
International:
http://emea.3com.com/globalservices
Specifications
3Com Corporation, Corporate Headquarters, 350 Campus Drive, Marlborough, MA 01752-3064
Tolearnmoreabout 3Com solutions, visit www.3com.com. 3Com is publicly traded on NASDAQ under the symbol COMS.
Copyright©2005 3Com Corporation. All rights reserved. 3Com, the 3Com logo, and SuperStack are registered trademarks, Exercise
Choice is a trademark of 3Com Corporation. All other company and product names may be trademarks of their respective companies.
While every effort is made to ensure the information given is accurate, 3Com does not accept liability for any errors or mistakes
which may arise. All specifications are subject to change without notice. 400809-010 04/05