Assigning Name Servers

To assign name servers to the system:

1. Access the virtual router context.
2. Define static routes to the gateways that provide access to the name servers.
3. Enable the virtual router to query name servers.
4. Specify a default domain name for the hosts.
5. Specify the name servers.

   Example

   host1(config)#virtual-router boston

   host1:boston(config)#ip route 0.0.0.0 0.0.0.0 gatewayIpAddress

   host1:boston(config)#ip domain-lookup

   host1:boston(config)#ip domain-name urlofinterest.com

   host1:boston(config)#ip name-server 10.2.0.3

   host1:boston(config)#ip name-server 10.2.5.5

ip domain-lookup

• Use to enable the system to query the configured DNS name servers when it needs an IP-hostname-to-IP-address translation.
• Domain lookup is disabled by default.
• Example

  host1(config)#ip domain-lookup

• Use the no version to disable domain lookup.
• See ip domain-lookup.

ip domain-name

• Use to define a default domain name for the clients that a name resolver serves.
• You must define a default domain name for each name resolver. Multiple name resolvers can use the same default domain name.
• If you map an unqualified hostname (one without a domain name) to an IP address with the host ftp command, the domain name is appended to the hostname before the name is stored in the host table.
• Example

  host1(config)#ip domain-name bigcompany.com

• Use the no version to delete the domain name; that is, the domain name will no longer be appended to hostnames in the static host table.
• See ip domain-name.

ip name-server

• Use to specify a DNS name server that the system can query for hostname-to-IP-address resolution.
• This command supports both IPv4 and IPv6 addressing formats.
• Example

  host1(config)#ip name-server 192.168.25.100 1:2:3:4:5:6:7:8:9:0:a:b:c:d:e:f

• Use the no version to delete the name server.
• See ip name-server.

Copyright © 2008, Juniper Networks, Inc. All rights reserved. Trademark Notice.