Datasheet

Performance Backplane capacity: 96 Gbps (4-slot model: 48 Gbps)
Maximum bandwidth: 240 Gbps (4-slot model: 120 Gbps)
Maximum throughput: 177 Mpps (4-slot model: 88 Mpps)
Layer 2 Switching
MAC Address 32K MAC addresses
10K Static MAC addresses
Modules forwarding (delay <10µs)
9K Jumbo Frame support
VLAN 4096 VLANs (IEEE 802.1Q)
GVRP (GARP VLAN Registration Protocol)
Link Aggregation Supports maximum of 64 link aggregation groups
Auto-negotiation Auto-negotiation of port speed and duplex
Traffic control IEEE 802.3x full-duplex flow control
Back pressure flow control for half-duplex
Supports broadcast storm suppression per VLAN
STP/RSTP IEEE 802.1D Spanning Tree Protocol (STP)
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
IEEE 802.1S Multiple Spanning Tree Protocol instances (MSTP)
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Single STP instance
BPDU (Bridge Protocol Data Unit) protection
Layer 3 Switching
Routes Hardware based routing
64K routes
64K static routes
64K dynamic / static ARP (Address Resolution Protocol) entries
IP Routing 64 IP interfaces
RIP (Routing Information Protocol), v1 and v2; supports Split Horizons
OSPF (Open Shortest Path First), v1 and v2; 50 areas
BGP4 (Boarder Gateway Protocol)
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IS-IS (Intra-Domain Intermediate System to Intermediate System)
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Multicast Hardware-based multicast routing for wirespeed performance
1K multicast routes
IGMP (Internet Group Management Protocol) snooping on Layer 2 interfaces
IGMP v1 and v2
GMRP (GARP Multicast Registration Protocol)
PIM-DM (Protocol Independent Multicast-Dense Mode)
PIM-SM (Protocol Independent Multicast-Sparse Mode)
Network protocol DHCP Relay (Dynamic Host Configuration Protocol Relay)
TCP/IP protocol stack
ARP
Resilience VRRP (Virtual Router Redundancy Protocol): 14 virtual routers per
switch; each virtual router supports 16 IP addresses
Convergence
Priority Queues Eight hardware queues per port
Traffic Prioritization Flow-based QoS profiles
Ingress and egress
Remarking of packets based on priority:
• Auto classification of NBX telephones
• Selectable prioritization
• DSCP (Diffserv Code Point)
• Type of Service (ToS)
• IEEE 802.1p Class of Service (CoS)
• IP precedence
• Local precedence: physical port, source/destination MAC address, VLAN
information, Ethernet type, Layer 3 protocol, source/destination IP address,
DSCP, datagram type, IP Layer 4 protocol, IP Layer 4 ports
Features
3COM
®
SWITCH 7700 FAMILY DATA SHEET
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Av ailable in the 3Com Advanced Feature Software