Cisco XR 12404 User Manual
Page 74
Chapter 3 Installing the Router
Supplemental Bonding and Grounding Connections
3-9
Cisco XR 12404 Router Installation Guide
OL-13830-02
•
On Cisco XR 12404 Routers configured for DC-input operation, the DC PDU
is equipped with a DC power connector block with wire-connection terminals
for connecting the negative lead (top terminal), the positive lead (middle
terminal), and the ground lead (bottom terminal). This is a safety feature.
Note
Cisco XR 12404 Router grounding architecture conforms to the DC-I
(DC-isolated) method of grounding as described in Telcordia
GR-1089-CORE. A DC-I architecture means that there is no connection
between the DC return terminal and the frame ground. DC return and
frame ground are isolated from one another at the router.
If the router is installed in a NEBS environment, we strongly recommend that you
connect the central office ground system or interior equipment grounding system
to the supplemental bonding and grounding point on the router chassis. This
grounding point consists of threaded inserts is located on the side of the chassis
near the back of the chassis (see
). It is also referred to as the NEBS
bonding and grounding receptacle, and is intended to satisfy the Telcordia NEBS
requirements for supplemental bonding and grounding connections.
Figure 3-4
Supplemental Bonding and Grounding Port for NEBS
Compliance
CONSOLID
ATED SWITCH F
ABRIC
CR
IT
IC
AL
M
AJ
O
R
M
IN
O
R
MBUS
FAIL
ENABLE
ALARM FABRIC
1
0
2
3
40C48/POS-SR-SC
TX
RX
ACTIVE
CARRIER
RX PKT
CLASS 1 LASER PR
ODUCT
LASERPRODUKT DER KLAS
SE 1
PRODUIT LASER DE C
LASSE 1
PRODUCTO LASER DE CLASSE 1
CLEAN
CONNECTOR
WITH ALCO
HOL
WIPES BEFO
RE
CONNECTIN
G
SLO
T-0
GIGABIT R
OUTE PROC
ESSOR
SLO
T-1
COLL
LINK
TX
RX
RJ-45
MII
RESET
AU
X
EJECT
CO
NS
OL
E
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