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Cisco SCE 8000 10GBE Software Configuration Guide
OL-30621-02
Chapter 11 Redundancy and Failover
Redundancy and Failover
External Bypass
The Cisco SCE 8000 platform can control an external bypass device, which bypasses the traffic during
a power failure and also under specific control command from the Cisco SCE 8000. The Cisco SCE 8000
automatically activates the external bypass device during reload for the short period (less than 10
seconds) in which the SPA Interface Processor card does not forward traffic between traffic ports. In
addition, the Cisco SCE 8000 can be configured to activate the external bypass device in the following
cases:
•
After executing the
external-bypass
command , until the
no external-bypass
command is executed
•
When the Cisco SCE 8000 is in failure state.
Note that in a cascaded configuration, an external bypass device should be connected only for the traffic
ports. The cascade ports should be directly connected between the two Cisco SCE 8000 platforms (see
Hardware Bypass
The Cisco SCE 8000 platform can support the hardware bypass, which bypasses the traffic of the
configured static parties created in the hw-bypass mode at the hardware (SIP module) level based on
their IP address or the IP address range.
Note
The static parties created only in the hw-bypass mode are bypassed.
In-line Dual Link Redundant Topology
This topology serves inline deployments where the Cisco SCE platform functionality should be
preserved in case of a failure, in addition to preserving the network link (
Figure 11-1
In-line Dual Link Redundant Topology
Failure Detection
The Cisco SCE 8000 platform has several types of mechanisms for detecting failures:
Subscriber
270590
Network
3/0/0
3/2/0
3/1/0
3/3/0
Subscriber
Network
3/2/0
3/0/0
3/3/0
3/1/0