Services Routers Hardware Guide
DC power
cables See DC power cables
connecting power.................................................86
dedicated DC power feed requirement...............145
electrical specifications.........................................69
grounding requirements and warning.................206
grounding the router.............................................87
installing a J6350 power supply..........................144
J2320 system........................................................18
J2350 system........................................................18
J4350 system........................................................30
J6350 system........................................................31
power disconnection warning.............................205
removing a J6350 power supply.........................143
requirements........................................................69
safety guidelines (general)...................................204
safety guidelines, power sources for redundant
power supplies................................................205
wiring sequence warning....................................207
wiring terminations warning...............................209
DC power cables
electrical specifications.........................................71
physical requirements...........................................71
replacing.............................................................142
usage warning.....................................................204
dd utility, for compact flash recovery.........................165
Declaration of Conformity..........................................235
default gateway
defining (Quick Configuration)............................105
description............................................................93
DHCP (Dynamic Host Configuration Protocol)..............94
DHCP server
after initial configuration.......................................94
before initial configuration....................................94
regaining lost lease after initial
configuration...................................................104
diagnosis
chassis................................................................158
hardware............................................................158
dial-up modem connection See modem connection to
router console port
digital certificate See SSL certificates
digital subscriber line See ADSL; SHDSL
DIMMs (dual inline memory modules) See DRAM
modules
DNS (Domain Name System).......................................93
DNS server
defining (configuration editor)............................112
defining (Quick Configuration)............................105
function................................................................93
documentation set
comments on.......................................................xxi
list of.....................................................................xx
domain name..............................................................92
defining (configuration editor)............................111
defining (Quick Configuration)............................104
See also DNS server
Domain Name System.................................................93
domain search
defining (configuration editor)............................112
defining (Quick Configuration)............................105
DRAM modules
installing.............................................................138
location...............................................................136
removing............................................................137
dry chemical fire extinguishers, prohibited..................67
DS1 ports See E1 ports; T1 ports
DS3 ports See E3 ports; T3 ports
DSL See ADSL; SHDSL
dual inline memory modules See DRAM modules
Dual-Port Channelized T1/E1/ISDN PRI PIM.................49
Dual-Port E1 PIM..........................................................48
Dual-Port E3 PIM .........................................................51
Dual-Port Fast Ethernet PIM.........................................53
Dual-Port Serial PIM.....................................................47
Dual-Port T1 PIM..........................................................48
Dual-Port T3 PIM .........................................................51
E
E1 ports
description............................................................48
See also channelized E1 ports
LED states.............................................................49
RJ-48 cable pinouts.............................................191
E3 ports
BNC connector pinouts.......................................194
description............................................................51
LED states.............................................................52
earth ground See grounding
earthquakes
rack-mount requirements.....................................65
seismic requirements............................................66
EIA-530A DCE cable pinouts......................................185
EIA-530A DTE cable pinouts......................................184
electrical specifications................................................69
electricity
safety warnings...................................................201
wiring guidelines...................................................68
electromagnetic compatibility (EMC) See EMC
electromagnetic interference (EMI) See See EMI
electrostatic bag, for storing components...................201
electrostatic discharge, preventing.............................201
EMC (electromagnetic compatibility)
compliance with requirements............................233
preventing problems with.....................................68
standards............................................................232
244 ■ Index
JUNOS Software with Enhanced Services Hardware Guide