H Commands

This chapter describes the Cisco NX-OS Border Gateway Protocol (BGP) commands that begin with H.

hardware ip glean throttle

To enable Address Resolution Protocol (ARP) throttling, use the hardware ip glean throttle command. To return to the default setting, use the no form of this command.

hardware ip glean throttle

no hardware ip glean throttle

 
Syntax Description

This command has no arguments or keywords.

 
Defaults

Disabled

 
Command Modes

Global configuration

 
Command History

Release
Modification

6.0(2)N1(1)

This command was introduced.

 
Usage Guidelines

Note We recommend that you configure the IP glean throttle feature by using the hardware ip glean throttle command to filter the unnecessary glean packets that are sent to the supervisor for ARP resolution for the next hops that are not reachable or do not exist. IP glean throttling boosts software performance and helps to manage traffic more efficiently.

This command does not require a license.

Examples

This example shows how to enable ARP throttling:

switch(config)# hardware ip glean throttle
switch(config)#

 
Related Commands

Command
Description

show hardware proxy layer-3 detail

Displays Layer-3 proxy detail information.

hardware ip glean throttle maximum

To limit the maximum number of drop adjacencies that will be installed in the Forwarding Information Base (FIB), use the hardware ip glean throttle maximum command. If no form is used, default limits will be applied.

hardware ip glean throttle maximum count

no hardware ip glean throttle maximum count

 
Syntax Description

count

Maximum count. The range is from 0 to 2147483647.

 
Defaults

The default value for count is 1000. The minimum value is 0 and the maximum value is 32767 entries

 
Command Modes

Global configuration

 
Command History

Release
Modification

6.0(2)N1(1)

This command was introduced.

 
Usage Guidelines

If the maximum number of entries are exceeded, the packets for which ARP is not resolved continue to be processed in the software instead of getting dropped in the hardware.

This command does not require a license.

Examples

This example shows how to limit the maximum number of drop adjacencies that are installed in the FIB:

switch(config)# hardware ip glean throttle maximum 2134
switch(config)#

 
Related Commands

Command
Description

show hardware proxy layer-3 detail

Displays Layer-3 proxy detail information.