Layer 2 Switching; Layer 3 Switching - 3Com SuperStack 3 3226 Datasheet

3C O M SUPE R STACK
®
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

LAYER 3 SWITCHING

Routes
IP Routing
Multicast
Network protocol
CONVERGENCE
Priority Queues
Traffic Prioritization
Bandwidth Management
3
3 SW I TCH 3 20 0 FAM I LY D ATA SH EET
®
SuperStack 3 Switch 3226, 8.8 Gbps; Switch 3250, 13.6 Gbps
Switch 3226, 6.6 Mpps; Switch 3250, 10.1 Mpps
Store-and-forward switching; latency <12 µs
8K MAC addresses
255 VLANs (IEEE 802.1Q)
IEEE 802.1ad (LACP), Gigabit ports only
Auto-negotiation of port speed, duplex, and connection (MDI/MDIX)
IEEE 802.3x full-duplex flow control
Back pressure flow control for half-duplex
Supports Broadcast Storm Suppression (3,000 pps threshold)
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
Backward-compatible with Spanning Tree Protocol (STP)
Fast-start mode
Spanning tree enable/disable per port
Hardware based routing
2,001 IP routes: 1,990 dynamic and 10 static Address Resolution Protocol (ARP) entries with 1 user
default route
32 IP interfaces
Multi-netting (multiple IP interfaces per VLAN)
Routing Information Protocol (RIP), v1 and v2
• Split Horizon
• Split Horizon with poisoned reverse
• Triggered updates
• MD5 authentication of the RIP packets
• Password authenticated RIP packets
• Host route advertisements
Filtering for 64 multicast groups
Internet Group Management Protocol (IGMP) snooping on Layer 2 interfaces
IGMP v1 and v2
IGMP Querier
Dynamic Host Configuration Protocol (DHCP) Helper/Relay
UDP Helper
ARP, ARP Proxy
Four hardware queues per port
Weighted Round Robin queuing
Priority based on:
• DiffServ Code Point (DSCP)
• IEEE 802.1p Class of Service (CoS) VLAN priority
• TCP/UDP destination port number
• Default port priority
• Auto classification of 3Com NBX
Port-based bandwidth management:
• 1 Mbps increments (10/100 ports)
• 8 Mbps increments (Gigabit ports)
telephony traffic
®