40X1Ge Line Card - Cisco ASR 9000 series Reference Manual

Chapter 2 Functional Description
Each NPU can handle up to 15 Gbps of line rate traffic (depending on the packet size and processing
requirements). The line cards can handle many different Ethernet protocols to provide Layer2/Layer3
switching. Each NPU can handle 30 Gbps of line rate data in a fully subscribed configuration. All
switching between ports is handled on the RSP card, which is connected through the backplane to all
line cards. VOQ is implemented in the fabric interface chip both on the line cards and on the RSP card,
which assures that all ingress data paths have equal access to their egress data ports.
Although the usable fabric bandwidth over the backplane from the fabric interface ASIC is 80 Gbps,
only up to 40 Gbps (usable data) flows over the interface plus any added overhead traffic (46 Gbps).

40x1GE Line Card

The 40x1GE line card has 40 ports connected to SFP modules handling 40 Gigabit Ethernet interfaces
through SGMII connections to four NPUs. The 40 SFP ports are organized into four blocks of 10 ports.
Each block of 10 ports connect to one NPU through an SGMII serial bus interface.
Figure 2-7
connectors and indicators.
Figure 2-7
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OL-17501-01
D R A F T — C I S C O C O N F I D E N T I A L
shows the block diagram for the 40x1GE Line card, and
40x1GE Line Card Block Diagram
GE
CPU
PHY
FPGA
Fabric
Interface
Chip
FPGA
40x1GE
Line Card
Cisco ASR 9000 Aggregation Services Router Overview and Reference Guide
Figure 2-8
NPU 10 x SFP
10 x SFP
NPU
NPU 10 x SFP
10 x SFP
NPU
Ethernet Line Cards
shows the front panel
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