Users Guide

Version Description
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. .
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
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
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-l2-switch | scaled-l3-hosts |
scaled-l3-routes}
Parameters
scaled-l2-
switch
Enter the keywords scaled-l2-switch to select the forwarding table mode for
scaling l3 switch entries.
Content Addressable Memory (CAM) 381