Juniper MX2010, Hardware Manual

Page: 177 / 825

When chromatic dispersion is at the maximum allowed, its effect can be considered as a power penalty in
the power budget. The optical power budget must allow for the sum of component attenuation, power
penalties (including those from dispersion), and a safety margin for unexpected losses.
CB-RE and RCB Interface Cable and Wire Specifications for MX Series
Routers
Table 47 on page 155 lists the specifications for the cables that connect to management ports and the wires
that connect to the alarm relay contacts.
NOTE: In routers where the Routing Engine (RE) and Control Board (CB) are integrated into a
single board, a CB-RE is known as Routing and Control Board (RCB). The RCB is a single FRU
that provides RE and CB functionality.
Table 47: Cable and Wire Specifications for Routing Engine and RCB Management and Alarm Interfaces
Router
Receptacle
Maximum
Length
Cable/Wire
Supplied
Cable
Specification Port
RJ-45 female 1.83 m 1.83-m length
with
RJ-45/DB-9
connectors
RS-232
(EIA-232) serial
cable
Routing Engine
console or
auxiliary
interface
RJ-45
autosensing
100 m One 4.57-m
length with
RJ-45/RJ-45
connectors
Category 5
cable or
equivalent
suitable for
100Base-T
operation
Routing Engine
Ethernet
interface
— None No Wire with
gauge between
28-AWG and
14-AWG (0.08
and 2.08 mm
2
)
Alarm relay
contacts
155