Clearing Forwarding Information In The Fib; Enabling Dynamic Tcam Allocation; Disabling Dynamic Tcam Allocation - Cisco Nexus 7000 Series Configuration Manual

Managing the Unicast RIB and FIB
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m .

Clearing Forwarding Information in the FIB

You can clear one or more entries in the FIB. Clearing a FIB entry does not affect the unicast RIB.
The clear forwarding command disrupts forwarding on the device.
Caution
To clear an entry in the FIB, including a Layer 3 inconsistency, use the following command in any mode:
Command
clear forwarding {ip | ipv4 | ipv6}
route {* | prefix } [vrf vrf-name ]
[module { slot | all}]
Example:
switch(config)# clear forwarding ip
route *

Enabling Dynamic TCAM Allocation

You can enable dynamic TCAM allocation.
Note You must be in the default VDC to configure dynamic TCAM allocation.
To enable dynamic TCAM allocation, use the following command in any mode:
Command
hardware forwarding
dynamic-allocation enable
Example:
switch# hardware forwarding
dynamic-allocation enable

Disabling Dynamic TCAM Allocation

You can disable dynamic TCAM allocation.
You can disable dynamic TCAM allocation only if the current TCAM usage is below the default
Note
allocation. See the
information.
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
15-10
"Returning the TCAM to Default Settings" section on page 15-11
Chapter 15
Purpose
Clears one or more entries from the FIB. The route
options are as follows:
• *—All routes.
prefix—Any IP or IPv6 prefix.
•
The vrf-name can be any case-sensitive alphanumeric
string up to 64 characters. The slot range is from 1 to 10.
Purpose
Enables dynamic TCAM allocation. The default is
enabled.
Managing the Unicast RIB and FIB
for more
OL-20002-02