Дорожная карта для Cisco Cisco Packet Data Gateway (PDG)
ST16 Hardware Platform Overview
Application and Line Cards ▀
Cisco ASR 5000 Series Product Overview ▄
OL-22937-01
Application and Line Cards
This section describes the application and line card components that comprise the system.
ST16 Application Cards
The following application cards are currently supported by the system:
Switch Processor Card
The SPC serves as the primary controller for the ST16 hardware platform and is used with Packet Accelerator Cards
(PACs). The SPC initializes the entire system and loads the software‘s configuration image into other cards in the
chassis, as applicable. SPCs are installed in slots 8 and 9. During normal operation, the SPC in slot 8 serves is the
primary card, and the SPC in slot 9 is the secondary card. Each SPC has a specialized central processing unit (CPU) and
1GB of random access memory (RAM).
(PACs). The SPC initializes the entire system and loads the software‘s configuration image into other cards in the
chassis, as applicable. SPCs are installed in slots 8 and 9. During normal operation, the SPC in slot 8 serves is the
primary card, and the SPC in slot 9 is the secondary card. Each SPC has a specialized central processing unit (CPU) and
1GB of random access memory (RAM).
There are two PC-Card slots on the SPC, each of which accepts ATA Type I or Type II PCMCIA cards, that
accommodate removable PC-Cards for temporary storage. These cards can be used to load and store configuration data,
software updates, buffer accounting information, and store diagnostic or troubleshooting information.
accommodate removable PC-Cards for temporary storage. These cards can be used to load and store configuration data,
software updates, buffer accounting information, and store diagnostic or troubleshooting information.
The CompactFlash™ slot on the SPC hosts configuration files, software images, and the session limiting/feature use
keys for the system.
keys for the system.
The SPC provides the following major functions:
Non-blocking low-latency inter-card communication
1:1 or 1:N redundancy for hardware and software resources
System management control
Persistent storage via a CompactFlash card and two removable PC-Card/PCMCIA slots for field serviceability
Internal gigabit Ethernet switch fabrics for management and control plane communication
The following table shows the front panel of the SPC and identifies its major components.
Table 8. SPC Callout Descriptions
Item
Description
1
Card Ejector Levers - Use to insert/remove card to/from chassis.
2
Interlock Switch —When pulled downward, the interlock switch notifies the system to safely power down card prior to
removal.
removal.
3
Card Level Status LEDs —Show the status of the card. (See Hardware Installation Guide for definitions).
4
System Alarm Speaker —Sounds an audible alarm when specific system failures occur.