Processes Overview - Cisco ASR1000-RP1 - ASR 1000 Series Route Processor 1 Router Software Configuration Manual

Processes Overview

Processes Overview
Cisco IOS XE has numerous components that run entirely as separate processes on the Cisco ASR 1000
Series Routers. This modular architecture increases network resiliency by distributing operating
responsibility among separate processes rather than relying on Cisco IOS software for all operations.
This section covers the following topics:
•
•
Table 1-2
These processes run in the background, and the CLI on Cisco ASR 1000 Series Routers using Cisco
IOS-XE is identical in look, feel, and usage to the Cisco IOS CLI on most platforms. This information
is provided because it may be useful for checking router state and troubleshooting, but understanding
this information is not essential to understanding most router operations.
Table 1-2
Process
Chassis Manager
Host Manager
Logger
Interface Manager
IOS
Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide
1-6
IOS as a Process, page 1-7
Dual IOS Processes, page 1-8
provides a list of the important individual processes for the Cisco ASR 1000 Series Routers.
Individual Processes
Purpose
Responsible for all chassis
management functions,
including management of the
HA state, environmental
monitoring, and FRU state
control.
Provides an interface between
the IOS process and many of
the information-gathering
functions of the underlying
platform kernel and operating
system.
Provides IOS facing logging
services to processes running
on each FRU.
Provides an interface between
the IOS process and the
per-SPA interface processes on
the SIP.
The IOS process implements
all forwarding and routing
features for the router.
Chapter 1 Software Packaging and Architecture
SubPackage
Affected FRUs Mapping
RP (one instance per RPControl
RP)
SIP (one instance per SIPBase
SIP)
ESP (one instance per ESPBase
ESP)
RP (one instance per RPControl
RP)
SIP (one instance per SIPBase
SIP)
ESP (one instance per ESPBase
ESP)
RP (one instance per RPControl
RP)
SIP (one instance per SIPBase
SIP)
ESP (one instance per ESPBase
ESP)
RP (one instance per RPControl
RP)
SIP (one instance per SIPBase
SIP)
RP (one per software RPIOS
redundancy instance per
RP). Maximum of two
instances per RP.
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