display dns ipv6 forward table

Function

The display dns ipv6 forward table command displays the DNS forwarding table.

Format

display dns ipv6 forward table [ source-ip ipv6-address ] [ slot slot-id cpu cpu-id ]

Parameters

Parameter	Description	Value
source-ip ipv6-address	Specifies the source IPv6 address in query messages.	The value is a 32-digit hexadecimal number, in the format of X:X:X:X:X:X:X:X. Two or more consecutive zeros in the address can be replaced by "::".
slot-id	Specifies the slot ID. Only the USG6635E/6655E, USG6680E and USG6712E/6716E support this parameter.	-
cpu-id	Specifies the CPU ID. Only the USG6635E/6655E, USG6680E and USG6712E/6716E support this parameter.	-

Parameter

Description

Value

source-ip ipv6-address

Specifies the source IPv6 address in query messages.

The value is a 32-digit hexadecimal number, in the format of X:X:X:X:X:X:X:X.

Two or more consecutive zeros in the address can be replaced by "::".

slot-id

Specifies the slot ID.

Only the USG6635E/6655E, USG6680E and USG6712E/6716E support this parameter.

cpu-id

Specifies the CPU ID.

Only the USG6635E/6655E, USG6680E and USG6712E/6716E support this parameter.

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

Usage Scenario

After IPv6 DNS proxy or IPv6 DNS relay is enabled, you can run the display dns ipv6 forward table command to view the DNS forwarding table of IPv6 addresses. When the IPv6 DNS proxy or IPv6 DNS relay is attacked, the DNS forwarding table will be full. As a result, new DNS entries cannot be queried. You can run the reset dns ipv6 forward table command to delete all DNS entries.

Example

# Display the IPv6 DNS forwarding table.

<sysname> display dns ipv6 forward table 
 mng-plane: 
Domain name            : www.ipv6.com  
Source IPv6 address    : FC00:1::5
Source port            : 49154 
Source packet id       : 5 
Forward packet id      : 0 
Query type             : 28  
VPN-Instance           : vpna

 ctrl-plane:

**Table 1** Description of the **display dns ipv6 forward table** command output
Item	Description
mng-plane	Management plane.
ctrl-plane	Control plane.
Domain name	Domain name.
Source IPv6 address	Source IPv6 address of a query message.
Source port	Source port of a query message.
Source packet id	ID of a query message.
Forward packet id	ID of the forwarded packet, which corresponds to the ID of the query message.
Query type	Query type 28: AAAA query 38: A6 query
VPN-Instance	Name of the VPN instance that the DNS client belongs to.