display dns host

Syntax

display dns host [ ip | ipv6 | naptr | srv ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

ip: Displays dynamic cache information about type A queries. A type A query resolves a domain name to the mapped IPv4 address.

ipv6: Displays dynamic cache information about type AAAA queries. A type AAAA query resolves a domain name to the mapped IPv6 address.

naptr: Displays dynamic cache information about NAPTR queries. A NAPTR query offers the replacement rule of a character string to convert the character string to a domain name.

srv: Displays dynamic cache information about SRV queries. An SRV query offers the domain name of a certain service site.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use display dns host to display dynamic DNS cache information.

Without any keyword, this command displays dynamic DNS cache information about all query types.

Related commands: reset dns host.

Examples

# Display dynamic DNS cache information about all query types.

<Sysname> display dns host
No.  Host                       TTL  Type  Reply Data
1    sample.com                 3132 IP    192.168.10.1
2    sample.net                 2925 IPv6  FE80::4904:4448
3    sip.sample.com             3122 NAPTR 100 10 u sip+E2U !^.*$!sip:info.se!i
4    website.tcp.sample.com     3029 SRV   10 10 8080 iis.sample.com

Table 20: Command output

Field	Description
No	Sequence number.
Host	Domain name for query.
TTL	Time that a mapping can be stored in the cache, in seconds.
Type	Query type, IP, IPv6, NAPTR, and SRV.
Reply Data	Reply data concerning the query type: For an IP query, the reply data is an IPv4 address. For an IPv6 query, the reply data is an IPv6 address. For a NAPTR query, the reply data comprises order, preference, flags, services, regular expression, and replacement. For an SRV query, the reply data comprises the priority, weight, port, and target domain name.

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