Unified Forwarding Table (Uft) Modes; Configuring Uft Modes - Dell S4048–ON Configuration Manual

To reset the number of FP blocks to the default, use the no version of these commands. By default, zero groups are allocated for the ACL
in VCAP. ACL VLAN groups or CAM optimization is not enabled by default. You must also allocate the slices for CAM optimization.
To display the number of FP blocks that is allocated for the different VLAN services, use the show cam-acl-vlan command. After you
configure the ACL VLAN groups, reboot the system to store the settings in nonvolatile storage. During CAM initialization, the chassis
manager reads the NVRAM and allocates the dynamic VCAP regions.

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 7. UFT Modes — Table Size
UFT Mode
Default
Scaled-l3-hosts
Scaled-l3-routes

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
scaled-l3-routes
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
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
Mode
108 Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM)
L2 MAC Table Size
160K
96K
32K
Forwarding table mode for scaling L3 host entries
Forwarding table mode for scaling L3 route entries
Current Settings
: Default
L3 Host Table Size
144K
208K
16K
console
Next Boot Settings
scaled-l3-routes
L3 LPM Table Size
16K
16K
128K