3com SS3 Switch 3870 48xG+F+Enet + 1 Slot 3CR17451-91-UK ユーザーズマニュアル
製品コード
3CR17451-91-UK
Performance
Switching capacity: SuperStack 3 Switch 3870 24-port, 108 Gbps; Switch 3870
48-port, 156 Gbps
Forwarding rate: 24-port, 80 Mpps; 48-port, 115 Mpps
Store-and-forward switching
Store-and-forward switching
Layer 2 Switching
MAC Address
16K MAC addresses
1024 secure MAC addresses
1024 secure MAC addresses
VLAN
255 VLANs (IEEE 802.1Q)
Link Aggregation
IEEE 802.3ad (LACP), Gigabit ports only
32 trunk groups (up to 8 ports in each), trunking across stacked units
32 trunk groups (up to 8 ports in each), trunking across stacked units
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
Broadcast Storm Control (500-200,000 pps limit)
Back pressure flow control for half-duplex
Broadcast Storm Control (500-200,000 pps limit)
Spanning Tree
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
Backward-compatible with STP
Fast-start mode
Spanning tree enable/disable per port
Backward-compatible with STP
Fast-start mode
Spanning tree enable/disable per port
Multicast Snooping
Filtering for 64 multicast groups
IGMP v1 and v2
IGMP Querier
IGMP v1 and v2
IGMP Querier
Jumbo Frames
Supports 9K packets
Stacking
Switched 40Gbps on each switch
Up to 8 units high
Resilient loop back
Hot-swap units
Single IP address for stack management
Up to 8 units high
Resilient loop back
Hot-swap units
Single IP address for stack management
Convergence
Priority Queues
Eight hardware queues per port
Strict priority
Weighted Round Robin queuing
Strict priority
Weighted Round Robin queuing
Traffic Prioritization
Priority based on:
• DSCP (DiffServ Code Point)
• IEEE 802.1p Class of Service (CoS) priority
• TCP/UDP destination port number
• Default port priority
• Auto classification of 3Com NBX
• IEEE 802.1p Class of Service (CoS) priority
• TCP/UDP destination port number
• Default port priority
• Auto classification of 3Com NBX
®
telephony traffic
Bandwidth Management
Port-based bandwidth management:
• 1 Mbps increments (Gigabit ports)
Features
3COM
®
SUPERSTACK
®
3 SWITCH 3870 24- AND 48-PORT STACKABLE SWITCHES DATA SHEET