
© 2007 Cisco Systems, Inc. All rights reserved. Cisco Confidential
23
ASR1006 Sub-50ms Switchover
RP’s are separate from ESP’s
1+1 redundancy option for RP and ESP in active/standby mode
–No redundancy for SIP or other I/O cards
–Switchover of ESP does not result in switchover of RP
–Switchover of RP/IOS does not result in switchover of ESP
Single RP may be configured with dual IOS for SW redundancy
Active
ESP
Active
Route
Processor
Standby
Route
Processor
Standby
ESP
SIP
SPA SPA
SPA SPA
SIP
SPA SPA
SPA SPA
SIP
SPA SPA
SPA SPA
G
E
L
i
n
k
G
E
L
i
n
k
Zero
Packet
Loss
RP fails
HW or SW
Standby
Becomes
Active
Active
Forwarding
Processor
Active
Route
Processor
Standby
Route
Processor
Standby
Forwarding
Processor
SIPSIP
SIP
P
u
n
t
P
a
t
h
E
S
I
E
S
I
–
–
1
1
.
5
G
1
1
.
5
G
SPA SPA SPA SPA SPA SPA
SPA SPA
SPA SPA SPA SPA
Minimal
Data
Interruption
ESP fails
SW or HW
Standby
Becomes Active
P
u
n
t
P
a
t
h
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