Reference Guide

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.
show hardware forwarding-table mode
Display the hardware forwarding table mode in the current boot and in the next boot.
Syntax
show hardware forwarding-table mode
Defaults none
Command Modes EXEC Privilege
Command History
This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.7(0.0) Introduced on the S6000, S6000-ON, and Z9500 switch.
Example
Dell#show hardware forwarding-table mode
Current Settings Next Boot
Settings
Mode : Default scaled-l3-
hosts
L2 MAC Entries : 160K 96K
L3 Host Entries : 144K 208K
L3 Route Entries : 16K 16K
Dell#
Related
Commands
hardware forwarding-table mode — selects the mode to initialize the maximum
scalability size for L2 MAC table or L3 Host table or L3 Route table.
618
Content Addressable Memory (CAM)