3com SuperStack 3 Switch 4400 24-Port 3C17203-US Data Sheet
Product codes
3C17203-US
3COM
®
SUPERSTACK
®
3 SWITCH 4400 FAMILY
3
FEATURES
Performance
Switching Capacity
24-port models, 8.8 Gbps; 48-port model, 13.6 Gbps
Forwarding Rate
24-port models, 6.6 Mpps; 48-port model, 10.1 Mpps
Store-and-Forward Switching
Latency <2.6 µs
Layer 2 Switching
MAC Address
8K MAC addresses
Secure MAC addresses (256 addresses)
Secure MAC addresses (256 addresses)
VLAN
64 VLANs (IEEE 802.1Q)
Link Aggregation
IEEE 802.3ad (LACP)
Four trunk groups (up to four ports in each)
Link Aggregation across stack
Four trunk groups (up to four ports in each)
Link Aggregation across stack
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 Suppression (3,000 pps threshold)
Back pressure flow control for half-duplex
Broadcast Storm Suppression (3,000 pps threshold)
Spanning Tree
IEEE 802.1D Spanning Tree Protocol (STP)
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
• Fast-start mode
• Spanning tree enable/disable per port
• Spanning tree enable/disable per port
Multicast Snooping
IGMP v1, v2, and v3 snooping
IGMP Querier
Filtering for 128 multicast groups
IGMP Querier
Filtering for 128 multicast groups
Stacking
Stacking
Up to 384 ports
Single IP address for stack management
Resilient stacking (T-type) connectors
Hot-swappable
Single IP address for stack management
Resilient stacking (T-type) connectors
Hot-swappable
Convergence
Priority Queues
Four hardware queues per port
Strict priority queuing
Weighted Round Robin queuing
Strict priority queuing
Weighted Round Robin queuing
Traffic Prioritization
CoS Marking / Remarking
IEEE 802.1p to DSCP mapping
Auto classification of 3Com NBX
IEEE 802.1p to DSCP mapping
Auto classification of 3Com NBX
®
telephony traffic
Priority based on:
• IEEE 802.1p CoS
• DSCP (DiffServ Code Point)
• TCP/UDP source or destination port number
• Default port priority
• IP Address / Protocol
• DSCP (DiffServ Code Point)
• TCP/UDP source or destination port number
• Default port priority
• IP Address / Protocol
Traffic Shaping
Egress rate limiting, port-based:
• 1 Mbps increments (10/100 ports)
• 8 Mbps increments (Gigabit ports)
• 8 Mbps increments (Gigabit ports)
Application and protocol blocking
Security
Network Access and
IEEE 802.1X user authentication
User Security
• RADIUS authentication
• Advanced security by locking a port to the MAC address of the authen-
• 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
• 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
• 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