C613-50100-01 REV C Command Reference for x930 Series 784
AlliedWare Plus™ Operating System - Version 5.4.6-1.x
DOMAIN NAME SERVICE (DNS) COMMANDS
IP
DNS FORWARDING CACHE
ip dns forwarding cache
Overview Use this command to set the DNS Relay name resolver cache size and cache entry
lifetime period. The DNS Relay name resolver cache stores the mappings between
domain names and IP addresses.
Use the no variant of this command to set the default DNS Relay name resolver
cache size and cache entry lifetime period.
Note that the lifetime period of the cache entry can be overwritten by the time-out
period of the DNS reply from the DNS server if the time-out period of the DNS reply
from the DNS server is smaller than the configured time-out period. The time-out
period of the cache entry will only be used when the time-out period of the DNS
reply from the DNS server is bigger than the time-out period configured on the
device.
Syntax
ip dns forwarding cache [size <0-1000>] [timeout <60-3600>]
no ip dns forwarding cache [size|timeout]
Default The default cache size is 0 (no entries) and the default lifetime is 1800 seconds.
Mode Global Configuration
Usage See the IP Feature Overview and Configuration Guide for more information about
DNS Relay.
Examples To set the cache size to 10 entries and the lifetime to 500 seconds, use the
commands:
awplus# configure terminal
awplus(config)# ip dns forwarding cache size 10 time 500
To set the cache size to the default, use the commands:
awplus# configure terminal
awplus(config)# no ip dns forwarding cache size
Parameter Description
<0-1000> Number of entries in the DNS Relay name resolver cache.
<60-3600> Timeout value in seconds.
Note that when running VRF lite the number of entries configured
will apply to each VRF lite instance.
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