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Important Points to Remember
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Content Addressable Memory (CAM)
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CAM Profiles are available on FTOS versions 6.3.1.1 and later for the E-Series TeraScale. Refer
to
Chapter 13, Content Addressable Memory (CAM) for ExaScale
commands for the E-Series ExaScale platform.
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FTOS versions 7.8.1.0 and later support CAM allocations on the C-Series and S-Series.
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All line cards within a single system must have the same CAM profile (including CAM sub-region
configurations); this profile must match the system CAM profile (the profile on the primary
RPM).
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FTOS automatically reconfigures the CAM profile on line cards and the secondary RPM to match
the system CAM profile by saving the correct profile on the card and then rebooting it.
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The CAM configuration is applied to entire system when you use CONFIGURATION mode
commands. You must save the running-configuration to affect the change.
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When budgeting your CAM allocations for ACLs and QoS configurations, remember that ACL
and QoS rules might consume more than one CAM entry depending on complexity. For example,
TCP and UDP rules with port range options might require more than one CAM entry.
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After you install a secondary RPM, copy the running-configuration to the startup-configuration so
that the new RPM has the correct CAM profile.
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You MUST save your changes and reboot the system for CAM profiling or allocations to take
effect.
The CAM Profiling commands are:
•
cam-acl (Configuration)
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cam-acl (EXEC Privilege)
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cam-optimization
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cam-profile (Config)
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show cam-acl
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show cam-profile
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show cam-usage
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test cam-usage
for information on the
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