12 C
HAPTER
1: I
NTRODUCING
THE
S
UPER
S
TACK
3 S
WITCH
4950
About the Switch
4950
The Switch 4950 is a 10/100/1000 Mbps mixed media device which
consists of:
■
12 10/100/1000BASE-T ports
■
6 1000BASE-SX ports
■
6 Gigabit Interface Convertor (GBIC) ports
Summary of
Hardware Features
Ta b le 3
summarizes the hardware features that are supported by the
Switch 4950.
Ta b l e 3 Hardware features
Feature Switch 4950
Addresses
Up to 12,000 supported
Up to 64 permanent entries
Forwarding Modes
Store and Forward
Duplex Modes
■
Half duplex only supported on 10/100/1000 Mbps
ports in 10/100 Mbps mode
■
All 1000 Mbps ports are full duplex only
Flow Control
Supported on all ports
Smart auto-sensing
Supported on 10/100/1000BASE-T ports only
Traffic Prioritization
Supported (IEEE 802.1D — incorporating 802.1P)
Four traffic queues per port
Fast Ethernet and
Gigabit Ethernet Ports
Auto-negotiating 10/100/1000BASE-T, 1000BASE-SX
and GBIC ports
RPS Support
Connects to SuperStack 3 Advanced Redundant Power
System (ARPS) (3C16071B)
Mounting
19-inch rack or stand-alone mounting
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