3 C O M
®
S U P E R S TA C K
®
3 S W I T C H 3 8 0 0 FA M I LY
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:
• 1 Mbps 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
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F R E E D O M T O C H O O S E A B E T T E R N E T W O R K
