3Com 3CR17450-91 Технічний паспорт - Сторінка 4

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3COM

SWITCH 3870 10/100/1000 FAMILY DATA SHEET

Features

PERFORMANCE

Switching capacity

Forwarding rate

LAYER 2 SWITCHING

MAC Address

VLAN

Link Aggregation

Auto-negotiation

Traffic control

Spanning Tree Protocol / Rapid Spanning Tree Protocol

Multicast Snooping

LAYER 3 SWITCHING

Routes

STACKING

CONVERGENCE

Priority Queues

Traffic Prioritization

Bandwidth Management

SECURITY

Network Login

Packet Filtering

Switch Protocol Security

SuperStack 3 Switch 3870 24-port, 108 Gbps; Switch 3870 48-port, 156 Gbps

24-port, 80 Mpps; 48-port, 115 Mpps

Store-and-forward switching

16K MAC addresses

1K Secure MAC addresses

9K Jumbo Frame support

255 VLANs (IEEE 802.1Q)

IEEE 802.3ad (LACP)

32 trunk groups (up to 8 ports in each), trunking across stacked units

Auto-negotiation of port speed, duplex, and connection (MDI/MDIX)

IEEE 802.3x full-duplex flow control

Back pressure flow control for half-duplex

Broadcast Storm Control (500-200,000 pps limit)

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

Filtering for 64 multicast groups

Internet Group Management Protocol (IGMP) v1 and v2

IGMP Querier

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

Switched 40Gbps on each switch

Up to eight units high, with single IP address for stack management

Resilient loop back

Hot-swap units

Eight hardware queues per port

Strict priority

Weighted Round Robin queuing

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

Port-based bandwidth management:

• 1 Mbps increments (Gigabit ports)

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

Port-based Access Control Lists (ACLs):

• Filtered on destination IP address / mask

MD5 cipher-text authentication and clear-text authentication

telephony traffic