Users Guide

Version Description
9.7(0.0) Introduced on the S6000–ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.8.1.0 Introduced.
Usage Information
This command applies to both IPv4 and IPv6 CAM Proles, but is best used when verifying QoS optimization for
IPv6 ACLs.
QoS Optimization for IPv6 ACLs does not impact the CAM usage for applying a policy on a single (or the rst of
several) interfaces. It is most useful when a policy is applied across multiple interfaces; it can reduce the impact to
CAM usage across subsequent interfaces.
The following describes the test cam-usage command shown in the following example.
Term Explanation
Stack-Unit
Lists the stack unit or units that are checked. Entering all shows the status for all stacks.
Portpipe Lists the portpipe (port-set) or port pipes (port-sets) that are checked. Entering all
shows the status for stack-units and port-pipes in the chassis. .
CAM Partition Shows the CAM prole of the CAM.
Available CAM Identies the amount of CAM space remaining for that prole.
Estimated CAM per
Port
Estimates the amount of CAM space the listed policy will require.
Status Indicates whether or not the policy will be allowed in the CAM.
Example
Dell# test cam-usage service-policy input In stack-unit all
Stack-unit|Portpipe| Tile |CAM Partition|Available CAM|Estimated CAM per Port|Status
------------------------------------------------------------------------------------
1 | 0 | 0 | L2ACL | 0 | 100 | Exception
1 | 0 | 1 | L2ACL | 156 | 100 | Allowed
1 | 0 | 2 | L2ACL | 256 | 100 | Allowed
1 | 0 | 3 | L2ACL | 256 | 100 | Allowed
Unied Forwarding Table Modes
Unied Forwarding Table (UFT) consolidates the resources of several search tables (Layer 2, Layer 3 Hosts, and Layer 3 Route [Longest
Prex Match — LPM]) into a single exible resource. The system supports several UFT modes to extract the forwarding tables, as
required. By default, Dell Networking OS initializes the table sizes to UFT mode 2 prole, as it provides a reasonable shared memory for all
the tables. The other supported UFT modes are scaled-l3–hosts (UFT mode 3) and scaled-l3–routes (UFT mode 4).
Important Points to Remember
• All line cards/Stack Members within a single system must have the same UFT mode proles. This prole must match the system UFT
mode prole (the prole on the primary route processor module [RPM]/ Master Unit of the Stack).
• Apply the UFT mode conguration to the entire system when you use the CONFIGURATION mode commands. Save the running-
conguration to aect the change.
460
Content Addressable Memory (CAM)