show dns cache

show dns cache {current} {detail}

Description

Shows Domain Name System (DNS) cache entries.

Syntax Description

dns Domain Name System.
cache Specifies showing DNS cache entries.
current Retrieves the current entries rather than most recent cache. Using this option might take some time to display the output.
detail Displays output without truncation.

Default

N/A.

Usage Guidelines

To clear the DNS cache, use the command clear dns cache.

Example

The following example shows DNS cache entries (truncated):

# show dns cache
Domain Name                   Address                             Flag  Expiry Time
----------------------------  ----------------------------------  ----  -----------------------
ocsp.starfieldtechaaaa.com>   ocsp.godaddy.com.akadnssss.net>     CF    Fri Jan  4 07:32:45 2019
a652.dscb.akamai.net          182.156.239.25                      4F    Fri Jan  4 06:35:47 2019
a652.dscb.akamai.net          182.156.239.27                      4F    Fri Jan  4 06:35:47 2019
s.twitter.com                 104.244.42.195                      4F    Fri Jan  4 06:59:12 2019
s.twitter.com                 104.244.42.67                       4F    Fri Jan  4 06:59:12 2019
s.twitter.com                 104.244.42.131                      4F    Fri Jan  4 06:59:12 2019
s.twitter.com                 104.244.42.3                        4F    Fri Jan  4 06:59:12 2019
dmp.truoptik.com              104.16.91.60                        4F    Fri Jan  4 06:37:35 2019
dmp.truoptik.com              104.16.92.60                        4F    Fri Jan  4 06:37:35 2019
 
Flags: 4 – IPv4, 6 – IPv6, C – Canonical Name, F – Forwarded Query, R – Reverse Query,        
X – Non-Existent Domain Name, > - Indicates Domain Name or Address is truncated past 44 characters.
Total: 9

The following example shows DNS cache entries (not truncated):

# show dns cache detail
Domain Name : ocsp.starfieldtech.com
Address     : ocsp.godaddy.com.akadns.net
Flag        : CF
Expiry Time : Fri Jan  4 07:32:45 2019
 
Domain Name : a652.dscb.akamai.net
Address     : 182.156.239.25
Flag        : 4F
Expiry Time : Fri Jan  4 06:35:47 2019
 
Domain Name : a652.dscb.akamai.net
Address     : 182.156.239.27
Flag        : 4F
Expiry Time : Fri Jan  4 06:35:47 2019
 
Domain Name : s.twitter.com
Address     : 104.244.42.195
Flag        : 4F
Expiry Time : Fri Jan  4 06:59:12 2019
 
Domain Name : s.twitter.com
Address     : 104.244.42.67
Flag        : 4F
Expiry Time : Fri Jan  4 06:59:12 2019
 
Domain Name : s.twitter.com
Address     : 104.244.42.131
Flag        : 4F
Expiry Time : Fri Jan  4 06:59:12 2019
 
Flags: 4 – IPv4, 6 – IPv6, C – Canonical Name, F – Forwarded Query, R – Reverse Query,
       X – Non-Existent Domain Name
Total: 9

History

This command was first available in ExtremeXOS 30.3.

Platform Availability

This command is available on ExtremeSwitching X435, X440-G2, X450-G2, X460-G2, X465, X590, X620, X670-G2, X690, X695, X870, 5320, 5420, and 5520 series switches.