The 3Com® Switch 3870 family of managed stackable 10/100/1000 Ethernet switches provides secure, flexible LAN connectivity for enterprise and branch office networks The Switch 3870 family offers Layer 2 switching and dynamic Layer 3 routing, as well as robust security, quality of service (QoS), and management features to deliver intelligent Gigabit edge connectivity for essential business applications.
Two switch models – stackable in any combination up to eight units – include:
• 3Com Switch 3870 24-Port:
20-Port 10/100/1000; 4-Port dual-person-ality 10/100/1000 or Gigabit SFP; dual built-in 10-Gbps stacking ports; expansion slot supporting 10-Gigabit (XENPAK) module
• 3Com Switch 3870 48-Port:
44-Port 10/100/1000; 4-Port dual-personality 10/100/1000 or Gigabit SFP; dual built-in 10-Gbps stacking ports; expansion slot supporting 10-Gigabit (XENPAK) module
It is time to consider "Gigabit to the desk" as an alternative to 10/100 switching:
• Give users a 10x improvement in
performance when compared to legacy 10/100 edge connections. Reduce network latency. Prepare the network for supporting high quality video and voice communication.
• Pricing for Gigabit is closer and closer to that of 10/100 switching, making it more justifiable to upgrade to the higher speed
• Gigabit speeds are increasingly being supported by new servers and workstations. Prepare the network to deliver optimum speed.
• Migration is easy, with 10-, 100-, and 1000Mbps operation that automatically adjusts to the maximum available speed. No worries about backward compatibility.
Secures the Network
Essential security features provide user and device authentication, enforce access control for switch management, and enhance overall network security to protect critical resources and information. The Switch 3870 also functions as an integral part of the 3Com Quarantine* solution, enabling automatic containment of security threats.
Empowers Application Convergence
The Switch 3870 family provides a 10x improvement in performance with reduced network latency. Combined with advanced quality of service (QoS) and traffic management features prepares the network to support high quality video and voice communication. The Switch 3870 family provides a 10x improvement in performance with reduced network latency. Combined with advanced quality of service (QoS) and
traffic management features prepares the network to support high quality video and voice communication.
Scalability
Enhanced 10/100/1000 Layer 2 switching and dynamic Layer 3 routing solution delivers scalable wirespeed Gigabit performance, with integrated stacking up to eight units high, or 384 Gigabit ports. Each Switch comes with integrated dual full duplex 10Gbps stacking ports on the back of the unit, providing a total stacked capacity of 40Gbps, plus an expansion slot capable of supporting an additional 10Gbps full duplex (20Gbps total) high-speed Ethernet connection. This enables the 156Gbps switching capacity to provide wirespeed switching on all ports. Stack-wide link aggregation enables highperformance connectivity to the core of the network, with up to eight ports from different units aggregated together to improve resiliency and uptime.
Performance
24 or 48 built-in copper Gigabit ports, including four dual-purpose ports supporting copper links or SFP adapters for easy, flexible connection to fiber based Gigabit media. Port-based rate-limiting enables the bandwidth on each port to be restricted, so power users can receive the full bandwidth available while non-key users can be throttled down, preserving network bandwidth and allowing maximum control of network resources. Built-in packet prioritization gives optimal performance to real-time applications such as voice and video. Future Protection Gigabit to the desk prepares your network for the future at prices comparable to those of some 10/100 switches. Tri-speed operation at 10-, 100-, and 1000Mbps allows easy migration to Gigabit speeds. Investment protection is further enhanced with switching silicon designed to support multilayer switching, and a module slot that supports a single-port 10-Gigabit Ethernet module, with CX-4, LR, or ER XENPAK ports that can be used to connect back to the network core.
Ease of Use
Dynamic routing with RIP (Routing Information Protocol) allows automatic updating of Layer 3 network topologies. Speed and duplex mode on all ports are negotiated automatically, preventing the possibility for improper configuration. Switches detect and adjust to cross-over or straight through cable connections via “Auto MDI/MDIX” feature, eliminating the need for different cables to interconnect network
devices. Security The Switch 3870 family ensures secure access to resources using standard 802.1X network access control combined with RADIUS authentication. Additionally, RADIUS Authenticated Device Access (RADA) enables authentication of attached devices via MAC address for an additional level of endpoint security. Port-based Access Control Lists (ACLs) effectively enable usage policies at each point of access to the network via the switch. Secure Shell (SSHv2), Secure Sockets Layer (SSL/HTTPs) and SNMPv3 support ensure secure management access to switches via authentication and encryption of management traffic.
Powerful Management
Comprehensive support within the 3Com management application software suite, including the standalone packages 3Com Enterprise Management Suite or 3Com Network Director. 3Com Network Supervisor may also be used in smaller networks.
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.
Limited Lifetime Hardware Warranty Limited Lifetime Hardware Replacement.
PERFORMANCE
Switching capacity SuperStack 3 Switch 3870 24-port, 108 Gbps; Switch 3870 48-port, 156 Gbps
Forwarding rate 24-port, 80 Mpps; 48-port, 115 Mpps
Store-and-forward switching
LAYER 2 SWITCHING
MAC Address 16K MAC addresses
1K Secure MAC addresses
9K Jumbo Frame support
VLAN 255 VLANs (IEEE 802.1Q)
Link Aggregation IEEE 802.3ad (LACP)
32 trunk groups (up to 8 ports in each), trunking across stacked units
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
Broadcast Storm Control (500-200,000 pps limit)
Spanning Tree Protocol / Rapid Spanning Tree Protocol IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
Backward-compatible with Spanning Tree Protocol (STP)
IEEE 802.1s Multiple Spanning Tree Protocol (MSTP)
Fast-start mode
Spanning tree enable/disable per port
Multicast Snooping Filtering for 64 multicast groups
Internet Group Management Protocol (IGMP) v1 and v2
IGMP Querier
LAYER 3 SWITCHING
Routes Hardware-based routing
Static routes: 10
Dynamic / static ARP (Address Resolution Protocol) entries : 2,000 / 16
IP routing IP interfaces: 32
RIP (Routing Information Protocol), v1 and v2: 2K via default route plus 16 hardware based routes
Multicast Routing IGMP v1 and v2 snooping
Stacking
Switched 40Gbps on each switch
Up to eight units high, with single IP address for stack management
Resilient loop back
Hot-swap units
CONVERGENCE
Priority Queues Eight hardware queues per port
Strict priority
Weighted Round Robin queuing
Traffic Prioritization Remarking of packets based on priority:
• Diffserv Code Point (DSCP)
• IEEE 802.1p Class of Service (CoS)
• TCP/UDP destination port number
• Default port priority
• Auto classification of 3Com NBX® telephony traffic
Bandwidth Management Port-based bandwidth management:
• 1 Mbps increments (Gigabit ports)
SECURITY
Network Login IEEE 802.1X user authentication:
• RADIUS authentication
• Secure Mode (locks MAC address)
RADIUS Authenticated Device Access (RADA):
• Authenticate devices based on MAC address against RADIUS server
• Authenticate multiple devices per port
• Automatic assignment of VLANs and QoS to a port specific to the devices attached
Packet Filtering Port-based Access Control Lists (ACLs):
• Filtered on destination IP address / mask
Switch Protocol Security MD5 cipher-text authentication and clear-text authentication
Switch Management SNMP V1 / V2 / V3 RADIUS management of switch passwords
Trusted IP Management Addresses
Data Security — Private Port Telnet: SSH v2 (56bit DES); SSL (HTTPS): 40 Bit, 56 Bit DES
RESILIENCY
Support for 3Com Advanced Redundant Power Supply; provides backup power to the switch
Dual software images
Backup and restore of switch settings
MANAGEMENT
Remote Management Simple Network Management Protocol (SNMP) v1, v2
Software Dual software images
Backup and restore
Trivial File Transfer Protocol (TFTP) configuration: upload/download
TFTP agent: upload
Configuration Command line
Serial (RJ-45 supplied)
Telnet
Web-based
SNMP
Time Simple Network Time Protocol (SNTP)
Mirror port / Roving Analysis Port (RAP) One-to-one (across stack)
Remote Monitoring (RMON) Four groups: statistics, history, alarm, and events
IP address allocation Dynamic Host Configuration Protocol (DHCP)
Manual
Switch access levels 5 user accounts
Remote GUI management 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
Other 3Com Management Applications:
• 3Com Network Director for comprehensive, turn-key network management for the enterprise.
• 3Com Enterprise Management Suite for flexible, extensible management in advanced
enterprise IT environments
OPTIONAL SERVICE AND SUPPORT
Network Health Check An activity-auditing service focused on improving network performance and productivity
Includes traffic monitoring, utilization analysis, problem identification, and asset deployment recommendations
Extensive report provides blueprint for action
Network Design Includes review of business plan, extensive inventory of requirements, and complete design document
specifying implementation details
Network Installation Experts set up and configure equipment and integrate technologies to maximize functionality and
minimize business disruption
Service may include physical site survey and network design and engineering based on evaluation of
business objectives
Project Management Provides extra focus and resources that special projects demand
3Com engineer(s) manage entire process from initial specifications to post-project review
Using structured methodology, requirements are identified, projects planned, and progress of
implementation activities tracked
3Com GuardianSM Maintenance Service Provides comprehensive onsite support, including advance hardware replacement, telephone technical
support, and software upgrades:
• Telephone support backed by powerful call-tracking database and replication laboratory
• Software upgrades ensure access to pertinent patches
3Com ExpressSM Maintenance Service Benefits customers who prefer to maintain own hardware
Bolsters in-house resources with convenient and speedy access to 3Com hardware replacements,
software upgrades, and telephone support
Specifications
All information in this section is relevant to both models
of the 3Com SuperStack 3 Switch 3870, unless stated
otherwise.
Port Capacities
24-Port:
20 10/100/1000 ports
4 dual-personality 10/100/1000 or SFP Gigabit ports
48-Port:
44 10/100/1000 ports
4 dual-personality 10/100/1000 or SFP Gigabit ports
Dimensions
Height: 45 mm (1.7 in or 1U)
Width: 440 mm (17.3 in)
Depth: 415 mm (16.4 in)
Weight: 5.0 kg (11.0 lbs)
Performance
24-port:
Bandwidth: 108 Gbps
Throughput: 80 Mpps
MTBF
24-port:
31 years (268,000 hours)
48-port:
21 years (184,000 hours)
Industry Standards Supported
Ethernet Protocols
IEEE 802.1p (CoS)
IEEE 802.1Q (VLANs)
IEEE 802.1s (MSTP)
IEEE 802.1w (RSTP)
IEEE 802.1X (Security)
IEEE 802.3ab (Copper Gigabit)
IEEE 802.3ad (Link Aggregation)
IEEE 802.3ae (10G Ethernet)
IEEE 802.3i (10BASE-T)
IEEE 802.3u (Fast Ethernet)
IEEE 802.3x (Flow Control)
IEEE 802.3z (Fiber Gigabit)
Emissions / Agency Approvals
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
Safety Agency Certifications
UL 60950-1
IEC 60950: 2001; all national deviations
EN 60950: 2001; all national deviations
CSA 22.2 # 60950-00
Management
SNMP V1 / V2 / V3, Web, and Telnet support
RMON-1
Specifications
48-port:
Bandwidth: 156 Gbps
Throughput: 115 Mpps
Power Supply
Input voltage: 100-240 VAC autoranging
Operating frequency: 47-63 Hz
Current Rating: 2A maximum
Heat dissipation: 717 BTU (210W)
CPU
MPC8245 (466Mhz)
32MB Flash memory
128MB Processor memory
Packet Buffer Memory
24-port: 2MB
48-port: 4MB
Environmental Requirements
Operating temperature:
0° to 40°C (32° to 104°F)
Storage temperature:
-40° to 70°C (-40° to 158°F)
Humidity:
10% to 90% non-condensing
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)
RMON Groups: Statistics, History, Alarms and Events
GUI management with 3Com Network Supervisor and
other 3Com management offerings
Warranty
Limited Lifetime Hardware Warranty. See
www.3com.com/warranty for details.
Other Benefits
Other Service Benefits: Advance hardware replacement
with same day shipment for
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
http://www.3com.com/products/en_US/global_services
International:
http://emea.3com.com/globalservices
Ordering Information
PRODUCT DESCRIPTION 3COM SKU
Switches
3Com Switch 3870, 24-Port 3CR17450-91
3Com Switch 3870, 48-Port 3CR17451-91
Modules
3Com Switch 3870 1-Port 10GBASE-X Module (XENPAK) 3C17461
Transceivers
3Com 1000BASE-SX SFP (multimode, LC connector) 3CSFP91
3Com 1000BASE-LX SFP (multimode, LC connector) 3CSFP92
3Com 1000BASE-LH70 (70km) SFP (multimode, LC connector) 3CSFP97
3Com 10GBASE-LR XENPAK (single-mode, SC connectors) 3CXENPAK92
3Com 10GBASE-CX4 XENPAK (Infiniband 4X connector) 3CXENPAK95
3Com 10GBASE-ER XENPAK (single-mode, SC connectors) 3CXENPAK96
Redundant Power
3Com SuperStack 3 Advanced Redundant Power System 3C16071B
3Com SuperStack 3 Advanced Redundant Power System, 325W Power Module Type 3 3C16075
Cables
3Com Switch 3870 Stacking Cable 3C17462
3Com Switch 3870 Resilient Stacking Cable 3C17463
Referensi
http://www.jevuska.com/topic/datasheet+switch.html
