display ipv6 nd track

Function

The display ipv6 nd track command displays information about the changes in the outbound interfaces of ND entries on VLANIF interfaces.

Format

display ipv6 nd track

Parameters

None

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

Usage Scenario

If the outbound interfaces of ND entries learned by a VLANIF interface change, traffic is intermittently interrupted. To keep track of the outbound interface changes, run the display ipv6 nd track command to display the change time.

Prerequisites

A VLANIF interface has ND entries, and their outbound interfaces have changed.

Precautions

After the display ipv6 nd track command is run, the following types of changes are displayed:

The outbound interface of a dynamic ND entry learned by the VLANIF interface changes to another interface.
The outbound interface of a static ND entry configured on the VLANIF interface is changed to another interface.
A dynamic or static ND entry on the VLANIF interface is deleted.

The following types of changes are not displayed:

ND entries on a non-VLANIF interface change.
A new ND entry is learned.
A new static ND entry is configured.

Example

# Display information about the changes in the outbound interfaces of ND entries on VLANIF interfaces.

<HUAWEI> display ipv6 nd track
Operate Flag : Modify
IPv6-Address : 2001:db8::1
MAC-Address  : 0001-0001-0001
VLAN         : 1000
Old-Port     : GE0/0/1
New-Port     : GE0/0/11
System-Time  : 2017-10-19 12:10:12

Operate Flag : Modify
IPv6-Address : 1000::1
MAC-Address  : 0001-0001-0001
VLAN         : 1000
Old-Port     : GE0/0/1
New-Port     : GE0/0/11
System-Time  : 2017-09-19 12:13:12

Operate Flag : Delete
IPv6-Address : 2000::11
MAC-Address  : 0001-0001-0001
VLAN         : 300
Old-Port     : GE0/0/2
New-Port     :
System-Time  : 2017-08-19 12:12:12

**Table 1** Description of the **display ipv6 nd track** command output
Item	Description
Operate Flag	Operation flag. Modify: indicates that the outbound interface changes. Delete: indicates that the ND entry is deleted.
IPv6-Address	IPv6 address of the ND entry.
MAC-Address	MAC address of the ND entry.
VLAN	VLAN ID of the VLANIF interface.
Old-Port	Original outbound interface of the ND entry.
New-Port	New outbound interface of the ND entry.
System-Time	Time when the outbound interface changed.