3Com SuperStack 3 4900 SX Ficha de dados - Página 3
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3C O M
SUPE R STACK
®
Features
PERFORMANCE
Switching Capacity
Forwarding Rate
Store and Forward Switching
LAYER 2 SWITCHING
MAC Addresses
VLAN
Link Aggregation
Auto Negotiation
Traffic Control
Spanning Tree
LAYER 3 SWITCHING
Routes
IP Routing
Multicast
Network Protocol
Access Control Lists
CONVERGENCE
Priority Queues
Traffic Prioritization
3 SW I TCH 4 90 0 FAM I LY D ATA SH EET
®
32Gbps for SuperStack 3 Switch 4900 and 4900 SX; 56Gbps for SuperStack 3 Switch 4924 and 4950
23.8Mpps for SuperStack 3 Switch 4900 and 4900 SX; 41.6Mpps for SuperStack 3 Switch 4924 and 4950
Latency 2.7 microseconds for all models
12K MAC addresses
30 VLANs (IEEE 802.1Q)
Manual and LACP Link Aggregation (IEEE 802.3ad). 13 groups/4 ports in each
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
IEEE 802.1D Spanning Tree Protocol (STP)
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP), backward-compatible with STP
Fast-start mode
Spanning tree enable/disable per port or per VLAN
Hardware-based routing
2,000 IP routes
100 Static Routes
5,000 ARP entries
64 IP interfaces
IP Multinetting (multiple IP interfaces per VLAN)
CIDR (Classless Internet Domain Routing)
RIP (Routing Information Protocol), v1 and v2
OSPF (Open Shortest Path First)
• 4 areas with 64 adjacencies
• ASBR support for static and default routes
Filtering for 128 multicast groups
IGMP (Internet Group Management Protocol) snooping on Layer 2 interfaces
IGMP v1 and v2
IGMP Querier
DHCP Relay (Dynamic Host Configuration Protocol Relay)
UDP (User Datagram Protocol) Helper
ARP (Address Resolution Protocol)
VLAN-based ACLs
• Filtered on destination IP address / mask
Four hardware queues per port
Weighted Round Robin queuing
Priority based on:
• IP address
• IEEE 802.1p Class of Service (CoS) VLAN priority
• TCP/UDP destination port number
• DSCP (DiffServ Code Point)
• Ethertype
• Default port priority
• Auto classification of 3Com NBX
* Only available on SuperStack 3 Switch 4924 and 4950 models.
*
*
®
telephony traffic
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