Extreme Networks ExtremeWare 7.2e, Installation And User Manual

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Port Connections
ExtremeWare 7.2e Installation and User Guide 27
Figure 3: Total optical system budgets for long range GBICs
Table 8 lists the minimum attenuation requirements to prevent saturation of the receiver for each type of
long range GBIC.
Port Connections
The Summit 400-48t switch has 48 copper 10/100/1000BASE-T ports using RJ-45 connectors for
communicating with end stations and other devices over 10/100/1000 Mbps Ethernet.
The switch provides full-duplex support for all ports. Full-duplex allows frames to be transmitted and
received simultaneously and, in effect, doubles the bandwidth available on a link. All 10/100/1000
Mbps ports on the Summit 400-48t switch autonegotiate for half- or full-duplex operation.
Uplink Redundancy
The four fiber ports and the first four of the 10/100/1000BASE-T ports are designed as combination
ports for uplink redundancy. When sharing ports, only the fiber port or only the copper port can be
active at the same time. If copper port 1 goes down while transmitting packets, fiber port 1X activates
and becomes the primary link. See Figure 4 for a diagram of these combination ports.
Table 8: Minimum attenuation requirements
Receivers
GBIC Type LX70 LX100
ZX (prior to
Rev 03)
ZX Rev 03 ZX mini
Transceivers
LX70 9 dB 13 dB 7 dB 7 dB 9 dB
LX100 8 dB 12 dB 6 dB 6 dB 8 dB
ZX (prior to
Rev 03) 2 dB 6 dB 0 dB 0 dB 2 dB
ZX Rev 03 5 dB 9 dB 3 dB 3 dB 5 dB
ZX mini 6 dB 10 dB 4 dB 4 dB 6 dB
XM_041
ZX GBIC
ZX GBIC
Rev. 03
ZX GBIC
Rev. 03
ZX GBIC
Rev. 03
21.0 dB 19.5 dB
ZX GBIC ZX GBIC
LX70 LX70
18.0 dB
23.5 dB
ZX GBIC LX70
29.0 dB
23.0 dB
19.0 dB
21.5 dB
23.0 dB
20.0 dB
LX70 LX100
LX100
LX100
30.0 dB
ZX GBIC
ZX GBIC
Rev. 03
LX100 LX100
25.0 dB
24.5 dB
27.0 dB
24.0 dB
LX70
ZX GBIC
Rev. 03
22.0 dB