3-8
Table 3-6
1000 Mbps Ethernet optical interface attributes
Description
Attribute
Multi-mode
short-haul
(850 nm)
Single-mode
medium-hau
l (1310 nm)
Single-mode
long-haul
(1310 nm)
Single-mode
long-haul
(1550 nm)
Single-mode
ultra-long
haul (1550
nm)
Connector
SFP/LC
Optical fiber
62.5/125
μ
m
multi-mode
9/125
μ
m
single-mode
9/125
μ
m
single-mode
9/125
μ
m
single-mode
9/125
μ
m
single-mode
Max.
transmission
segment
0.55 km (0.34
mi)
10 km (6.2
mi)
40 km (24.9
mi)
40 km (24.9
mi)
70 km (43.5
mi)
Central
wavelength
850 nm
1310 nm
1310 nm
1550 nm
1550 nm
Min
–9.5 dBm
–9 dBm
–2 dBm
–4 dBm
–4 dBm
Transmit
ter
optical
power
Max
0 dBm
–3 dBm
5 dBm
1 dBm
2 dBm
Receiver
sensitivity
–17 dBm
–20 dBm
–23 dBm
–21 dBm
–22 dBm
Operating mode
1000 Mbps
Full duplex
Frame format
Ethernet_II
Ethernet_SNAP
z
The fiber-optic and electrical connections that a 10/100/1000 Mbps Ethernet interface provides
cannot be used at the same time. If both connections are present, you can configure which
connection takes effect through commands. By default, the electrical connection works.
z
MDI (media dependent interface) is a typical type of Ethernet interface provided by network
adapters. MDIX is crossover media-dependent interface, which is commonly found on a Hub or
LAN switch.
z
MDI/MDIX auto-sensing is supported by the fixed 1000 Mbps electrical interface on the MSR 50
main control board.
Ethernet cable
1) Electrical Ethernet interface cable.
Ethernet interfaces usually use category 5 twisted pair cables, as shown in the following figure: