Software Redundancy Overview - Cisco ASR1002 - ASR 1002 Router Software Configuration Manual

High Availability Overview
Table 14 Hardware Redundancy Overview
Support for Dual
Hardware
Configuration on
Cisco ASR 1001
Hardware Router
Enhanced No
Services
Processor
Route Processor No
SPA No
SIP No
Software Redundancy on the Cisco ASR 1000 Series Routers
This section covers the following topics:
•
Support for Dual
Hardware
Configuration on
Cisco ASR 1002
Router
No
No
No
No
Software Redundancy Overview, page 4
Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide
Software Redundancy on the Cisco ASR 1000 Series Routers
Support for Support for
Dual Hardware Dual Hardware
Configuration Configuration
on Cisco ASR on Cisco ASR
1004 Router 1006 Router
No Yes
No Yes
No No
No No
Failover Behavior
If an active ESP experiences a
hardware or software event that
makes it unable to forward
traffic (such as a hardware
failure, an OIR, or a manual
switch) and a standby ESP is
configured, the standby ESP
becomes the active ESP with
the possibility of a minor
interruption (less than 200 ms).
If an active RP experiences an
event that makes it unable to
forward traffic (such as a
hardware failure, a software
failure, an OIR, or a manual
switch) and a standby RP is
configured, the standby RP
immediately becomes the active
RP.
No standby configurations are
available for SPAs. If a SPA
fails, that particular SPA is
down and unable to forward
traffic.
In the event of a SPA shutdown,
all other SIPs and SPAs on the
router continue to be fully
operational.
No standby configurations are
available for SIPs. If a SIP fails,
all SPAs in that SIP are down
and unable to forward traffic.
In the event of a SIP shutdown,
all other SIPs and SPAs on the
router continue to be fully
operational.
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