Configuring The Link Mode - Cisco SCE 8000 10GBE Software Configuration Manual

Configuring the Link Mode

Configuring the Link Mode
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About the Link Mode
The Cisco SCE platform has an internal hardware card used to maintain the links even when the Cisco
SCE platform fails. This hardware card has three possible modes of operation:
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Normally, the link mode is selected by the Cisco SCE platform software according to the configured
connection-mode. However, the link mode command can be used to enforce a specific desired mode.
This may be useful when debugging the network, or in cases where we would like the Cisco SCE
platform just to forward the traffic. (Note that this is only relevant to inline topologies even though the
configuration is available also when in receive-only mode.)
Options
The following link mode options are available:
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Recommendations and restrictions
Note the following recommendations and restrictions:
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From the SCE(config if)# prompt, type:
Command
link mode all-links (forwarding|bypass|cutoff) Enforces a specific desired mode.
Cisco SCE 8000 10GBE Software Configuration Guide
8-6
About the Link Mode, page 8-6
Options, page 8-6
bypass
forwarding
cutoff
Forwarding—Forwards traffic to the Cisco SCE platform for processing.
Bypass—Stops all forwarding of traffic to the Cisco SCE platform. Traffic still flows through the
Cisco SCE platform, but is not processed by it in any way.
This does not affect the redundancy states.
Cutoff—Completely cuts off flow of traffic through the Cisco SCE platform.
For the Cisco SCE 8000 platform, the link mode setting is global, and cannot be set for each link
separately. Therefore the all-links keyword must be used.
Link mode is relevant only to inline topologies.
The default link mode is forwarding.
When other link modes are selected, active service control is not available and any service control
configuration will not be applicable.
It is recommended that in cascaded topologies, both Cisco SCE platforms be configured for the same
link mode, otherwise the service will be unpredictable.
Chapter 8
Purpose
Configuring the Connection
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