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Chapter 43: Domain Name Service Commands
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C
OMMAND
M
ODE
Privileged Exec
E
XAMPLE
Console#show dns
Domain Lookup Status:
DNS enabled
Default Domain Name:
sample.com
Domain Name List:
sample.com.jp
sample.com.uk
Name Server List:
192.168.1.55
10.1.0.55
Console#
show dns cache
This command displays entries in the DNS cache.
C
OMMAND
M
ODE
Privileged Exec
E
XAMPLE
Console#show dns cache
No. Flag Type IP Address TTL Domain
------- ------- ------- --------------- ------- --------
3 4 Host 209.131.36.158 115 www-real.wa1.b.yahoo.com
4 4 CNAME POINTER TO:3 115 www.yahoo.com
5 4 CNAME POINTER TO:3 115 www.wa1.b.yahoo.com
Console#
show hosts
This command displays the static host name-to-address mapping table.
C
OMMAND
M
ODE
Privileged Exec
Table 43-2: show dns cache - display description
Field Description
No. The entry number for each resource record.
Flag The flag is always “4” indicating a cache entry and therefore unreliable.
Type This field includes “Host” which specifies the primary name for the owner,
and “CNAME” which specifies multiple domain names (or aliases) which
are mapped to the same IP address as an existing entry.
IP Address The IP address associated with this record.
TTL The time to live reported by the name server.
Domain The host name associated with this record.