High Availability Overview
Software Redundancy on the Cisco ASR 1000 Series Routers
3
Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide
Software Redundancy on the Cisco ASR 1000 Series Routers
This section covers the following topics:
• Software Redundancy Overview, page 4
Ta b l e 14 Hardware Redundancy Overview
Hardware
Support for Dual
H
ardware
Configuration on
Cisco ASR 1001
Router
Support for Dual
Har
dware
Configuration on
Cisco ASR 1002
Router
Support for
Dual Hardw
are
Configuration
on Cisco ASR
1004 Router
Support for
Dual Hardw
are
Configuration
on Cisco ASR
1006 Router Failover Behavior
Enhanced
Servi
ces
Processor
No No No Yes 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).
Route Processor No No No Yes If an active RP experiences an
e
vent 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.
SPA No No No No No standby configurations are
a
vailable 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 SI
Ps and SPAs on the
router continue to be fully
operational.
SIP No No No No No standby configurations are
a
vailable 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 SI
Ps and SPAs on the
router continue to be fully
operational.
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