7750 SR-a4 and 7750 SR-a8 Overview
7750 SR-a4 and SR-a8 Installation Guide 29
7750 SR-a8 Chassis Slot Allocation
This section describes the slot allocations for each type of chassis component. The
7750 SR-a8. Figure 4 identifies the slots and the components.
Figure 4: 7750 SR-a8 Chassis Slot Identification
As shown in Figure 4, the 7750 SR-a8 chassis has two forwarding complexes. Each
forwarding complex has a single IOM-a and up to four MDA-a cards with a forwarding
capacity of 100 Gb/s.
MDA-a and MDA-aXP cards occupy a half of a chassis slot. MDA-a slot 1/1 and 2/1 are XP-
capable, meaning that they support 100 Gb/s MDA-aXPs. These slots support up to
100 Gb/s full-duplex bandwidth.
The remaining six MDA-a slots support 25 Gb/s full-duplex bandwidth. MDA-a cards must
be ordered separately from the chassis. An impedance panel must be installed in any empty
MDA-a slot. See MDA-a Cards for more information.
MDA-XP 1/1
Fan Tray
IOM 2
IOM 1
MDA 1/2
MDA 1/3 MDA 1/4
MDA-XP 2/1 MDA 2/2
MDA 2/3 MDA 2/4
CPM A
PSU 1 PSU 2 PSU 3 PSU 4
CPM B
Slot 1
Slot 2
Slot 3
Air Filter
Forwarding
Complex 1
Slot 4
Slot 5
Slot 6
Slot 7
Forwarding
Complex 2
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