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スイッチ 3Com 3C17204のPDF データシートをオンラインで閲覧またはダウンロードできます。3Com 3C17204 8 ページ。 3com superstack 3 4400: specifications

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FEATURES

Performance

Switching Capacity

Forwarding Rate

Store-and-Forward Switching

Layer 2 Switching

MAC Address

VLAN

Link Aggregation

Auto-negotiation

Traffic Control

Spanning Tree

Multicast Snooping

Stacking

Convergence

Priority Queues

Traffic Prioritization

Traffic Shaping

Security

Network Access and

User Security

24-port models, 8.8 Gbps; 48-port model, 13.6 Gbps

24-port models, 6.6 Mpps; 48-port model, 10.1 Mpps

Latency <2.6 µs

8K MAC addresses

Secure MAC addresses (256 addresses)

64 VLANs (IEEE 802.1Q)

IEEE 802.3ad (LACP)

Four trunk groups (up to four ports in each)

Link Aggregation across stack

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 Suppression (3,000 pps threshold)

IEEE 802.1D Spanning Tree Protocol (STP)

IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)

• Fast-start mode

• Spanning tree enable/disable per port

IGMP v1, v2, and v3 snooping

IGMP Querier

Filtering for 128 multicast groups

Up to 384 ports

Single IP address for stack management

Resilient stacking (T-type) connectors

Hot-swappable

Four hardware queues per port

Strict priority queuing

Weighted Round Robin queuing

CoS Marking / Remarking

IEEE 802.1p to DSCP mapping

Auto classification of 3Com NBX

Priority based on:

• IEEE 802.1p CoS

• DSCP (DiffServ Code Point)

• TCP/UDP source or destination port number

• Default port priority

• IP Address / Protocol

Egress rate limiting, port-based:

• 1 Mbps increments (10/100 ports)

• 8 Mbps increments (Gigabit ports)

Application and protocol blocking

IEEE 802.1X user authentication

• RADIUS authentication

• Advanced security by locking a port to the MAC address of the authen-

ticated user

• Automatically assign VLANs and QoS profile to a port based on user

• Guest VLAN option

RADIUS Authenticated Device Access (RADA)

• Authenticate devices based on MAC address against a RADIUS server

• Authenticate multiple devices per port

• Automatically assign VLANs and QoS to a port specific to the devices

attached

• Operates alongside IEEE 802.1X authentication to ensure user and

device are allowed access

• Local authentication for up to fifty IEEE 802.1X users and RADA

devices in absence of a centralized RADIUS server

• RADA "whitelist" support enhances flexibility for IEEE 802.1X/RADA

deployment

• Option to allow default VLAN access when RADIUS server is unavailable

3COM

SUPERSTACK

3 SWITCH 4400 FAMILY

telephony traffic