4
Figure1 Front and Rear Chassis Views
Card Slot and Logical Interface Numbering

Port adapter and cable interface line card slots maintain the same slot number regardless of whether other port adapters or

cable interface line cards are installed or removed. However, when you move a port adapter or a line card to a different slot,

the logical interface number changes to reflect the new slot number.

Figure2 Slot Numbers and Locations
1Internal fans 9Auxiliary port
2Clock card 10 Optional Fast Ethernet port (M11 and RJ-45 receptacles)
3Fan tray handle 11 PCMCIA slots
4Captive installation screws (line cards) 12 AC plug1
1. AC power supplies are shown in this illustration. DC power supplies are also available.
5Cable interface line cards 13 Power switch
6Port adapters 14 Power supply handle
7I/O controller 15 AC-input power supply
8Console port 16 Network processing engine (NPE)
103555
US2
US4
US5
US6
US7
DS0-RF
DS1-RF
uBR - MC28U
US1
US0
US3
US2
US4
US5
US6
US7
DS0-RF
DS1-RF
uBR - MC28U
US1
US0
US3
US2
US4
US5
US6
US7
DS0-RF
DS1-RF
uBR - MC28U
US1
US0
US3
US2
US4
US5
US6
US7
DS0-RF
DS1-RF
uBR - MC28U
US1
US0
US3
11
109
12
13
3
1
24
5
6
7
8
103563
US2
US4
US5
US6
US7
DS0-RF
DS1-RF
uBR - MC28U
US1
US0
US3
US2
US4
US5
US6
US7
DS0-RF
DS1-RF
uBR - MC28U
US1
US0
US3
US2
US4
US5
US6
US7
DS0-RF
DS1-RF
uBR - MC28U
US1
US0
US3
US2
US4
US5
US6
US7
DS0-RF
DS1-RF
uBR - MC28U
US1
US0
US3
Slot 3
Slot 4