Reference Guide

Unified Forwarding Table (UFT) 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. Dell Networking OS 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).
Table 8. UFT Modes —Table Size
UFT Mode L2 MAC Table Size L3 Host Table Size L3 LPM Table Size
Default 160K 144K 16K
Scaled-l3-hosts 96K 208K 16K
Scaled-l3-routes 32K 16K 128K
Configuring UFT Modes
To configure the Unified Forwarding Table (UFT) modes, follow these steps.
1. Select a mode to initialize the maximum scalability size for L2 MAC table or L3 Host table or L3 Route table.
CONFIGURATION
hardware forwarding-table mode
Dell(conf)#hardware forwarding-table mode ?
scaled-l3-hosts Forwarding table mode for scaling L3 host entries
scaled-l3-routes Forwarding table mode for scaling L3 route entries
Dell(conf)#
Dell(conf)#hardware forwarding-table mode scaled-l3-hosts
Hardware forwarding-table mode is changed. Save the configuration and reload to take
effect.
Dell(conf)#end
Dell#write mem
!
01:13:36: %STKUNIT0-M:CP %FILEMGR-5-FILESAVED: Copied running-config to startup-
config in flash by default
Dell(conf)#
Dell(conf)#end
Dell#01:13:44: %STKUNIT0-M:CP %SYS-5-CONFIG_I: Configured from console
Dell#
2. Display the hardware forwarding table mode in the current boot and in the next boot.
EXEC Privilege
show hardware forwarding-table mode
Dell#show hardware forwarding-table mode
Current Settings Next Boot Settings
Mode : Default scaled-l3-routes
L2 MAC Entries : 160K 32K
L3 Host Entries : 144K 16K
L3 Route Entries : 16K 128K
Dell#
Content Addressable Memory (CAM)
185