Platform Processes - Cisco ASR 5500 System Administration Manual

StarOS Tasks
Task Description
sgtpcmgr SGSN GPRS Tunneling
Protocol Control message
Manager
srb Standard Routing Database

Platform Processes

Table 27: Platform Process Tasks
Task Description
afctrl ASR 5500 Fabric Controller
afmgr ASR 5500 Fabric Manager
afio ASR 5500 Fabric I/O Driver
Function
Created by the Session Controller for each VPN context in which an SGSN
service is configured.
Terminates Gn/Gp and GTP-U interfaces from peer GGSNs and SGSNs
for SGSN Services.
Terminates GTP-U interfaces from RNCs for IuPS Services.
Controls standard ports for GTP-C and GTP-U.
Processes and distributes GTP-traffic received from peers on these ports.
Performs all node level procedures associated with Gn/Gp interface.
With session recovery (SR) enabled, this demux manager is usually
established on one of the CPUs on the first active demux packet processing
card.
Eight srbs are created by the Session Controller when Content Filtering
in the Enhanced Charging Service is enabled. A minimum of two packet
processing cards are required to initiate these eight tasks.
Receives the static database from the session controller. Each srb task
loads two database volumes (one primary and one secondary). The srb
task also stores the static DB.
Rates and categorizes the URL based on the DB volumes and CSI
(Category Set Index) stored on it.
Performs peer loading in case its peer fails. If both the srb task and its peer
fail, the session controller performs the loading.
Function
Responsible for the overall management of the system fabric. Manages the
pool of Rendezvous Destinations and coordinates fabric recovery by the
afmgr proclets after a fault. A single afctrl instance runs on the active
MIO/UMIO only.
Responsible for the management of fabric resources on a 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.
Responsible for the direct configuration of the fabric chipset. afio supports
non-messenger interprocess communication (IPC) with the local afmgr
and with other local afio instances
ASR 5500 System Administration Guide, StarOS Release 21.5
Platform Processes
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