Filter
Top Products
Nortel Secure Router 8012
Hardware Description 4 Boards
Issue 5.3 (6 April 2009) Nortel Networks Inc. 4-17
Attribute Description
Ethernet_SNAP
Working mode 100/1000 Mbit/s autosensing
Full duplex
Supported
network protocol
IP
4.2.5 Technical specifications
Table 4-11 shows the technical specifications of the RPU board.
Table 4-11 Technical specifications of the RPU
Parameter Description
Silkscreen RPU
Power consumption 35 W
Dimensions 399.15 mm (W) x 236 mm (D) x 35.06 mm (H)
Height of the front
panel
35.06 mm
4.3 NPUs
This section introduces the functions of the Network Process Unit (NPU), the board, and the
technical specifications for the Secure Router 8012.
The board is located in the back slot on the bottom of the chassis. An NPU is installed in the
system from the back and sits back-to-back with the RPU.
4.3.1 Functions
An NPU consists of the network processor module, the Field Programmable Gate Array
(FPGA) module, the storage module, and the other attached devices. The board implements
expedited forwarding of data packets, including IP forwarding, Multiprotocol Label Switching
(MPLS) forwarding, multicast forwarding, and Quality of Service (QoS). The forwarding rate
can reach 6 Mpps.
The NPU has the following functions:
z
inputs the service data convergence and outputs the service data division
z
provides the upstream and downstream of the data convergence module with the QoS
guarantee
z
encapsulates and decapsulates the data frame after HIC and FIC data enters the network
process module