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Chapter 9. DM4000 MPU416
9.1. Overview
The DM4000 MPU416 is a hot-swappable Switch Fabric module capable of handling 416Gbps of non-
blocking data (up to 208 Gigabit Ethernet ports). It is compatible with DM4004 and DM4008 chassis. In
the DM4004 chassis it can handle up to 52 Gigabit Ethernet ports per interface board at a non-blocking
configuration. In the DM4008 it can handle up to 26 Gigabit Ethernet ports per interface board.
The entire 416Gbps data is switched by the active MPU, while the standby MPU monitors the state of the
active MPU. In case of failure, the standby MPU assumes the switching of packets and generates a MPU
failure major alarm to the management system.
The DM4000 MPU416 can handle up to 309,523,808 packets per second supporting 12KB jumbo frames
and has an internal 1.5MB Switching Memory reaching wire speed operation.
The DM4000 MPU416 has a 1GHz microprocessor with 2GB of RAM and 1GB of Flash.
Figure 9-1. MPU416 inside DM4004 Chassis
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