Cisco Cisco Packet Data Gateway (PDG) Prospecto
Exec Mode Commands (D-S)
dns-client ▀
Cisco ASR 5x00 Command Line Interface Reference ▄
3857
dns-client
Performs DNS (Domain Name System) query on the basis of specified DNS client name, DNS query domain name, and
type of query criteria.
type of query criteria.
Product
All
Privilege
Security Administrator, Administrator, Operator, Inspector
Mode
Exec
The following prompt is displayed in the Exec mode:
[local]host_name#
Syntax
dns-client dns_client_name [ query-type { A | AAAA | NAPTR | SRV } ] query-name
query_domain_name
query_domain_name
dns-client
dns_client_name
Specifies the name of the DNS client whose cache and/or statistics are to be queried. It must be an existing
DNS client expressed as an alphanumeric string of 1 through 64 characters.
DNS client expressed as an alphanumeric string of 1 through 64 characters.
query-type { A | NAPTR | SRV } ]
Specifies that the type of query to perform for the defined DNS client is to be displayed.
A
: Filters DNS results based on domain IPv4 address records (A records). This is the default query type.
AAAA
: Filters DNS results based on domain IPv6 address records (AAAA records).
NAPTR
: Filters DNS results based on Naming Authority Pointer records (NAPTR).
SRV
: Filters DNS results based on service host records (SRV records).
query-name
query_domain_name
Filters the DNS results based on the query domain name expressed as an alphanumeric string of 1 trough 255
characters.
characters.
query_domain_name
is the domain name used to perform the DNS query and is different from the actual
domain name which is resolved. For example, to resolve the SIP server for
service.com
, the query name is
_sip._udp.service.com
and the query type is
SRV
.
Usage
Use this command to perform DNS query on the basis of DNS Client name and filters the query results based
on query type and query name. This command also populates the result into DNS Cache. This command used
the current context to DNS request.
on query type and query name. This command also populates the result into DNS Cache. This command used
the current context to DNS request.
Example
The following command displays statistics for a DNS client named
test_dns
with query type for IP address
as
A
and query name as
domain1.com
: