Datasheet

Data Sheet
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Figure 17 shows the WS-X4418-GB.
Figure 17. WS-X4418-GB Cisco Catalyst 4500 Gigabit Ethernet Module, server switching 18 ports (GBIC)
WS-X4418-GB
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18 ports
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1000BASE-X (GBIC)
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Cisco IOS Software Release 12.1(8a)EW or later
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IEEE 802.3, IEEE 802.3x flow control
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2 ports of wire-speed 1000BASE-X Gigabit Ethernet uplinks
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16 ports: 4:1 oversubscribed
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Enterprise and commercial: designed for fiber to the desktop, switch-to-switch applications,
or small server farms
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Metro Ethernet: GBIC flexibility designed for network operators building the next generation
of Metro Ethernet networks
Figure 18 shows the WS-X4448-GB-SFP.
Figure 18. WS-X4448-GB-SFP Cisco Catalyst 4500 Gigabit Ethernet Module, 48-ports 1000X (SFP)
WS-X4448-GB-SFP
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48 ports
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1000BASE-X (SFP)
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Cisco IOS Software Release 12.2(20)EW or later
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IEEE 802.3x flow control
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Bandwidth is allocated across six 8-port groups, providing 1 Gbps per port-group
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Enterprise and commercial: designed for server farms and switch-to-switch applications