mtu-negotiate disable

Function

The mtu-negotiate disable command disables the MTU check for a VSI.

The undo mtu-negotiate disable command restores the default configuration.

By default, the MTU check is enabled for a VSI.

Format

mtu-negotiate disable

undo mtu-negotiate disable

Parameters

None

Views

VSI-BGP-MH view, VSI-BGP view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l2vpn	write

Usage Guidelines

Usage Scenario

The default MTU is 1500 bytes for a VSI. On a BGP VPLS network, two PEs cannot establish a PW if their VSI MTUs are different. To solve this problem, take either of the following measures:

Run the mtu command for the two PEs to use the same VSI MTU.
Run the mtu-negotiate disable command to disable the VSI MTU check.

Prerequisites

The VSI-BGP view has been displayed using the pwsignal bgp command.

Configuration Impact

Two PEs can establish a PW regardless of whether their VSI MTUs are the same.

Example

# Disable the MTU check for VSI vsi1.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] quit
[*HUAWEI] mpls l2vpn
[*HUAWEI-l2vpn] quit
[*HUAWEI] vsi vsi1 auto
[*HUAWEI-vsi-vsi1] pwsignal bgp
[*HUAWEI-vsi-vsi1-bgp] route-distinguisher 100:1
[*HUAWEI-vsi-vsi1-bgp] mtu-negotiate disable