Panasonic 324566-A - Manual (Page 70)

4 Boards
Nortel Secure Router 8012
Hardware Description
4-12 Nortel Networks Inc. Issue 5.3 (6 April 2009)
Interface
classification
Interface
name
Interface attribute Interface
type
Board name
Serial port High-speed
synchronous
serial port DTE/DCE DB-28 4SAE
Ethernet
interface 10M/100M/1000M bit/s
autosensing RJ45 RPU
Console
interface — RJ45 RPU
AUX interface — RJ45 RPU
Electrical
interface of
maintenance
E1/CE1
T1/CT1
z
75 Ω coaxial cable
z 120 Ω shielded
twisted pair (STP)
z Coaxial
connecto
r
z RJ45
4E1/4CE1/8E
1/8CE1
/RT-HIC-16C
E1
4CT1/8CT1/
RT-HIC-16C
T1
4.2 RPUs
This section introduces the functions of the Routing Process Unit (RPU), the boards, the
interfaces, and the technical specifications for the Secure Router 8012.
The RPU is located in either of the two slots on the top of the chassis. The RPU is installed in
the front panel and corresponds with the NPU in the system. The Secure Router 8012 has two
types of RPUs: ERPUA (with a memory of 512 MB) and ERPUB (with a memory of 1 GB).
For normal operation, the master RPU and slave RPU must be the same type.
4.2.1 Functions
The RPU is the main control board of the Secure Router 8012. It consists of the PowerPC
processor, system controller bridge, storage, and other attached devices. The RPU monitors
the system ports, manages the equipment, and processes various software protocols.
The RPU has the following functions:
z processes the routing protocol
z receives and sends the FIC packets
z manages the interface state
z monitors the state of the power system
z monitors the state of the fan system
z monitors the system temperature
z supports the configuration and management of the active and standby NPUs
z configures and manages the high-speed interface