Routing Engine Interface Cable Specifications For Mx5, Mx10, Mx40, And Mx80; Routers; Table 35: Cable Specifications For Routing Engine Management - Juniper MX10 Hardware Manual

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Documentation
Routing Engine Interface Cable Specifications for MX5, MX10, MX40, and MX80 Routers
Related
Documentation
Copyright © 2017, Juniper Networks, Inc.
The following sample calculation for an 8-km-long single-mode link with a power budget
(P ) of 13 dB uses the estimated values from
B
(LL) as the sum of fiber attenuation (8 km @ 0.5 dB/km, or 4 dB) and loss for seven
connectors (0.5 dB per connector, or 3.5 dB). The power margin (P
follows:
P = P – LL
M B
P = 13 dB – 8 km (0.5 dB/km) – 7(0.5 dB)
M
P = 13 dB – 4 dB – 3.5 dB
M
P = 5.5 dB
M
In both examples, the calculated power margin is greater than zero, indicating that the
link has sufficient power for transmission and does not exceed the maximum receiver
input power.
Understanding Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion on page 66
Table 35 on page 69 lists the specifications for the cables that connect to management
ports.

Table 35: Cable Specifications for Routing Engine Management

Cable
Port Specification
Routing Engine RS-232
console or (EIA-232) serial
auxiliary cable
interface
Routing Engine Category 5 cable
Ethernet or equivalent
interface suitable for
100Base-T
operation
MX5, MX10, MX40, and MX80 Routing Engine Description on page 21
Maintaining the MX5, MX10, MX40, and MX80 Routing Engine on page 162
RJ-45 Connector Pinouts for the ETHERNET Port on MX5, MX10, MX40, and MX80
Routers on page 72
RJ-45 Connector Pinouts for the AUX and CONSOLE Ports on MX5, MX10, MX40, and
MX80 Routers on page 71
Chapter 10: Transceiver and Cable Specifications
Table 34 on page 68
Cable/Wire Maximum
Supplied Length
One 6-ft 6 ft (1.83 m)
(1.83-m) length
with RJ-45/DB-9
connectors
One 15-ft 328 ft (100 m)
(4.57-m) length
with
RJ-45/RJ-45
connectors
to calculate link loss
) is calculated as
M
Router
Receptacle
RJ-45 female
RJ-45
autosensing
69