Cisco ASR 5000 Administration Manual page 421

StarOS Tasks
Task
afmgr
afio
connproxy
cspctrl
cssctrl
cssmgr
dcardctrl
Description Function
ASR 5500 Fabric Responsible for the management of fabric resources on a
Manager particular card. There is one afmgr on every CPU that is
responsible for one or more fabric access processors (FAPs)
or fabric elements (FEs). afmgr supports recovery but not
migration.
ASR 5500 Fabric I/O Responsible for the direct configuration of the fabric chipset.
Driver afio supports non-messenger interprocess communication
(IPC) with the local afmgr and with other local afio instances
TCP/SCTP Connection Allows applications on any card to share the same TCP/SCTP
proxy connection to the same remote endpoint instead of opening
a new connection for each application on the card.
Card-Slot-Port Manages physical chassis components.
Controller
Content Server Selection Maintains all global CSS properties which include a list of
(CSS) Controller CSS servers that can be bound to a service in a context.
CSS defines how traffic will be handled based on the
"content" of the data presented by or sent to a mobile
subscriber. CSS encompasses features such as load balancing,
NAT, HTTP redirection, DNS redirection.
The content server (services) can be either external to the
platform or integrated within the platform. External CSS
servers are configured via the Context Configuration mode
css server command.
The CSS Controller does not create CSS Managers. CSS
Managers are stopped and started by VPN Managers. A CSS
Manager is automatically created for each context.
Content Server Selection Spawned by the VPN Manager within a StarOS context.
(CSS) Manager
Manages the keepalives to a CSS server within the specific
VPN context.
Fetches the CSS related information for a subscriber
If a CSS server goes down, the cssmgr task reprograms the
NPUs to by-pass the service or redistribute the data among
the rest of the servers in the service.
Daughter Card Spawns daughter card managers during system initialization
Controller and monitors daughter card managers during system steady
state execution. It also spawns daughter card managers
[ASR 5x00 only]
whenever a daughter card manager task fails.
ASR 5000 System Administration Guide, StarOS Release 21.1
Platform Processes
393