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DES-3326 Layer 3 Fast Ethernet Switch User’s Guide
• Store and forward switching scheme.
• Full and half-duplex for both 10Mbps and 100Mbps connections. The front-port Gigabit Ethernet
module operates at full duplex only. Full duplex allows the switch port to simultaneously
transmit and receive data, and only works with connections to full-duplex capable end stations
and switches. Connections to hubs must take place at half-duplex.
• Supports IEEE 802.3x flow control for full-duplex mode ports.
• Supports Back-pressure flow control for half-duplex mode ports.
• Auto-polarity detection and correction of incorrect polarity on the transmit and receive twisted-
pair at each port.
• IEEE 802.3z compliant for all Gigabit ports (optional module).
• IEEE 802.3x compliant Flow Control support for all Gigabit ports (optional module).
• IEEE 802.3ab compliant for 1000BASE-T (Copper) Gigabit ports (optional module).
• Data forwarding rate 14,880 pps per port at 100% of wire-speed for 10Mbps speed.
• Data forwarding rate 148,800 pps per port at 100% of wire-speed for 100Mbps speed.
• Data filtering rate eliminates all error packets, runts, etc. at 14,880 pps per port at 100% of wire-
speed for 10Mbps speed.
• Data filtering rate eliminates all error packets, runts, etc. at 148,800 pps per port at 100% of
wire-speed for 100Mbps speed.
• 8K active MAC address entry table per device with automatic learning and aging (10 to 9999
seconds).
• 16 MB packet buffer per device.
• Broadcast and Multicast storm filtering.
• Supports Port Mirroring.
• Supports Port Trunking – up to six trunk groups (each consisting of up to eight ports) may be set
up.
• 802.1D Spanning Tree support.
• 802.1Q Tagged VLAN support – up to 63 User-defined VLANs per device (one VLAN is reserved
for internal use).
• GVRP – (GARP VLAN Registration Protocol) support for dynamic VLAN registration.
• 802.1p Priority support with 4 priority queues.
• IGMP Snooping support.
• Layer 2 Multicast support – GMRP (GARP Multicast Registration Protocol).
Layer 3 Switch Features
• Wire speed IP forwarding.
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