crypto ipsec minimal-pmtu

Last Updated : Oct 26, 2015 |

Sets the minimal PMTU value which can be applied to an SA when the Branch Gateway participates in Path MTU Discovery (PMTUD) for the tunnel pertaining to that SA. Use no crypto ipsec minimal-pmtu to restore the minimal PMTU to the default value of 300.

Syntax

[no] crypto ipsec minimal-pmtu bytes

Parameters

Parameter

Description

Possible Values

Default Value

bytes

The length of the minimum PMTU

68-1400

300

User level

read-write

Context

interface:Serial (DS1 PPP L2, DS1 PPP L2-L3, DS1 FR-SUB L2, DS1 FR-SUB L2-L3, USP PPP L2, USP PPP L2-L3), FastEthernet (L2, L2-L3, PPP L2, PPP L2-L3), VLAN (L2, L2-L3), Dialer (L2, L2-L3)

Example

To set the minimal PMTU value to 128:

Gxxx-001(if:fastEthernet 10/3)# crypto ipsec minimal-pmtu 128