Port Connections; Uplink Redundancy - Extreme Networks ExtremeWare 7.2e Installation And User Manual

Figure 3: Total optical system budgets for long range GBICs
ZX GBIC
LX70
LX70
ZX GBIC
ZX GBIC
Table 8 lists the minimum attenuation requirements to prevent saturation of the receiver for each type of
long range GBIC.
Table 8: Minimum attenuation requirements
Transceivers

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.
ExtremeWare 7.2e Installation and User Guide
19.5 dB
ZX GBIC
22.0 dB
LX70
23.0 dB
ZX GBIC
20.0 dB
Rev. 03
18.0 dB
LX70
23.5 dB
19.0 dB
ZX GBIC
21.5 dB
Rev. 03
GBIC Type LX70
LX70 9 dB
LX100 8 dB
ZX (prior to 2 dB
Rev 03)
ZX Rev 03 5 dB
ZX mini 6 dB
ZX GBIC 21.0 dB
Rev. 03
30.0 dB
LX100
29.0 dB
LX70
23.0 dB
25.0 dB
ZX GBIC
24.5 dB
27.0 dB
ZX GBIC
24.0 dB
Rev. 03
Receivers
ZX (prior to
LX100 Rev 03)
13 dB 7 dB
12 dB 6 dB
6 dB 0 dB
9 dB 3 dB
10 dB 4 dB
Port Connections
ZX GBIC
Rev. 03
LX100
LX100
LX100
LX100
XM_041
ZX Rev 03 ZX mini
7 dB 9 dB
6 dB 8 dB
0 dB 2 dB
3 dB 5 dB
4 dB 6 dB
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