Ppp Ipcp Dns Suffix-List - Allied Telesis AR2050V Command Reference Manual

PPP C
OMMANDS
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PPP IPCP DNS SUFFIX LIST

ppp ipcp dns suffix-list

Overview Use this command to configure a suffix-list to be associated with DNS
name-servers learned over the PPP connection.
Use the no variant of this command to remove the suffix-list.
Syntax ppp ipcp dns suffix-list <domain-list-name>
no ppp ipcp dns suffix-list
Mode Interface Configuration
Usage A PPP connection can be configured to learn DNS servers from the remote peer by
using the command
This command allows a user to associate a domain-list to be used to match against
the suffixes of incoming DNS requests. For example, a customer branch office may
have a router that is used to give remote-access to their head office, over which
they learn the IP address of the head office's DNS server. A domain list can be
created that contains a suffix used for services internal to that company, for
example, "example.lc". This domain-list is associated as a suffix-list to the PPP
connection. So when the PPP connection is completed with the head office, users
at the branch office that browse to "intranet.example.lc" will have the DNS request
forwarded to the DNS server learned over the PPP connection. Without having the
suffix-list configured, the DNS request for "intranet.example.lc" would instead be
sent to the primary DNS server, which is likely to be the branch office's ISP, and they
will simply respond with a negative reply, because .example.lc is not a globally
routable domain.
Examples At a branch office, to direct DNS lookups for domains with suffixes of
"engineering.acme" or "intranet.acme" to an internal corporate name-server run at
head-office that was learned over a PPP connection, use the commands:
awplus#
awplus(config)#
host(config-domain-list)#
domains; do not send DNS requests to internet
host(config-domain-list)#
host(config-domain-list)#
awplus(config)#
awplus(config-if)#
awplus(config-if)#
C613-50186-01 Rev B
Parameter
<domain-list-name> The name of the DNS domain-list
ppp ipcp dns
configure terminal
ip dns forwarding domain-list corporatedomains
interface ppp0
Command Reference for AR2050V
AlliedWare Plus™ Operating System - Version 5.4.7-1.x
Description
command.
description Our internal network
domain engineering.acme
domain intranet.acme
ppp ipcp dns required
ppp ipcp dns suffix-list corporatedomains
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