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Figure 6: Internal Bypass
When the IDP operating system resumes healthy operations, it sends a reset signal
to the traffic interfaces, and the interfaces resume normal operation.
NOTE: All copper port traffic interfaces support internal bypass. Some, but not all,
fiber port traffic interfaces support internal bypass. Check with your sales contact
for applicable part numbers.
NOTE: Bypass settings are applicable only for deployments where the virtual router
is in the network path—transparent mode deployments.
NOTE: The bypass and PPM features are applied independently. The Internal Bypass
setting is related to the status of the IDP operating system. The peer port modulation
setting is related to the status of the link. It is possible to have a healthy operating
system and a link with status down, or a failed operating system and a link with
status up.
NICs Off
The NICs Off setting supports network security policies that privilege security over
availability. With NICs Off configured, in the event of failure or graceful shutdown,
the interfaces are turned off and the IDP appliance becomes a point of failure. If your
network design includes redundant network paths, you can configure your routers
to detect the downed IDP interfaces and choose an alternate path.
Traffic Interface Ports ■ 11
Chapter 1: Hardware Overview