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QoS Optimization for IPv6 ACLs does not impact the CAM usage for applying a policy on a single (or the first 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. The port set value is from

0 to 0.

CAM Partition Shows the CAM profile of the CAM.

Available CAM Identifies the amount of CAM space remaining for that profile.

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

----------------------------------------------------------------------------

1 | 0 | IPv4Flow | 102 | 0| Allowed

Dell#

Dell# test cam-usage service-policy input In stack-unit 1 port-set 0

-----------------------------------------------------------------------------

1 | 0 | IPv4Flow | 102 | 0| Allowed

Dell#

Unified Forwarding Table Modes

Unified Forwarding Table (UFT) consolidates the resources of several search tables (Layer 2, Layer 3 Hosts, and Layer 3 Route [Longest

Prefix Match — LPM]) into a single flexible 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 profile, 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 profiles. This profile must match the system UFT

mode profile (the profile on the primary route processor module [RPM]/ Master Unit of the Stack).

• Apply the UFT mode configuration to the entire system when you use the CONFIGURATION mode commands. Save the running-

configuration to affect the change.

• Save the changes and reboot the system for UFT mode profiling to take effect.

hardware forwarding-table mode

Select a mode to initialize the maximum scalability size for L2 MAC table or L3 Host table or L3 Route table.

Syntax

hardware forwarding-table mode {scaled-l3- hosts | scaled-l3-routes}

Parameters

scaled-l3–

hosts

Enter the keywords scaled-l3–hosts to select the forwarding table mode for scaling

l3 host entries.

Content Addressable Memory (CAM) 445