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15-10
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
OL-20002-02
Chapter 15 Managing the Unicast RIB and FIB
Managing the Unicast RIB and FIB
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.
Caution The clear forwarding command disrupts forwarding on the device.
To clear an entry in the FIB, including a Layer 3 inconsistency, use the following command in any mode:
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:
Disabling Dynamic TCAM Allocation
You can disable dynamic TCAM allocation.
Note You can disable dynamic TCAM allocation only if the current TCAM usage is below the default
allocation. See the “Returning the TCAM to Default Settings” section on page 15-11 for more
information.
Command Purpose
clear forwarding {ip | ipv4 | ipv6}
route {* |
prefix
} [vrf
vrf-name
]
[module {
slot
| all}]
Example:
switch(config)# clear forwarding ip
route *
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.
Command Purpose
hardware forwarding
dynamic-allocation enable
Example:
switch# hardware forwarding
dynamic-allocation enable
Enables dynamic TCAM allocation. The default is
enabled.
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