Service Manual

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Version Description

8.3.7.0 Introduced on the S4810.

7.8.1.0 Introduced.

Usage

Information

This command applies to both IPv4 and IPv6 CAM Profiles, 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

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. Trident 2 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, since 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).

● The UFT mode configuration is applied to the entire system when you use the CONFIGURATION mode commands. Save the

running-configuration to affect the change.

● You MUST save your 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}

Content Addressable Memory (CAM) 381