Juniper ACX2000, Hardware Manual

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Table 4: CLI Equivalents of Terms Used in Documentation for ACX2100 Routers (continued)
Additional Information Item in Documentation
Value (as
displayed in the
CLI)
Description (as
displayed in the
CLI)
Hardware
Item (as
displayed
in the CLI)
“Cooling System and Airflow in
an ACX2000 and ACX2100
Router” on page 60
Fan – Fan
NOTE: ACX2100
routers are fanless
models.
Fan
Figure 6: ACX2100 Interface Port Mapping
g017849
ACX2100
MGMT CONSOLE/AUX
SYS
0 1
EXT REF CLK IN
ALARM
OUT IN IN OUT
0/0/8
0/0/0
0/0/9
0/0/1
0/0/10
0/0/2
0/0/11
0/0/3
0/0/12
0/0/4
0/0/13
0/0/5 0/0/6
0/0/14
0/0/7
0/0/15
1/0/0
1/0/2
1/0/1 1/1/1 1/1/0
1/0/3 1/1/2
GE
1/1/3
COMBO PORTS XE 1/3/0 1/3/1
T1/E1
1PPS 10MHz
GE 1/1/0 1/1/1 1/2/0
1/1/2 1/1/3 1/2/1
FPC 0, PIC 0
T1/E1 0/0/0-0/0/15 FPC 1, PIC 0
GE 1/0/0-1/0/3
FPC 1, PIC 1
GE 1/1/0-1/1/3
FPC 1, PIC 2
GE 1/2/0-1/2/1
FPC 1, PIC 3
XE 1/3/0-1/3/1
Packet Flow on ACX Series Routers
The class-of-service (CoS) architecture for ACX Series routers is in concept similar to that for MX Series
routers. The general architecture for ACX Series routers is shown in Figure 7 on page 24 .
Figure 7: ACX Series Router Packet Forwarding and Data Flow
Incoming packet
Ingress classification
In order of
decreasing precedence:
MF classification (DFW)
Fixed classification
BA classification
Queuing Egress rewrite
Outgoing packet
g006408
Buffering Scheduling
Based on the model, ACX Series routers contain a built-in Routing Engine and Packet Forwarding Engine
and can contain both T1/E1 and Gigabit Ethernet Ports.
The Packet Forwarding Engine has one or two “pseudo” Flexible PIC Concentrators. Because there is no
switching fabric, the single Packet Forwarding Engine takes care of both ingress and egress packet
forwarding.
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