Cisco Cisco ASR 5000
APN Configuration Mode Commands
dns ▀
Command Line Interface Reference, StarOS Release 18 ▄
1343
The DNS can be specified at the APN level in APN configuration as well as at the Context level in Context
configuration mode with
configuration mode with
ip name-servers
command, or it can be received from AAA server.
When DNS is requested in PCO configuration, the following preference will be followed for DNS value:
1. DNS Values received from LNS have the first preference.
2. DNS values received from RADIUS Server has the second preference.
3. DNS values locally configured with APN has the third preference.
4. DNS values configured at context level with
1. DNS Values received from LNS have the first preference.
2. DNS values received from RADIUS Server has the second preference.
3. DNS values locally configured with APN has the third preference.
4. DNS values configured at context level with
ip name-servers
command has the last preference.
Important:
The same preference would be applicable for the NBNS (NetBIOS Name Service) servers to be
negotiated via ICPC (Initial Connection Protocol Control) with the LNS (L2TP Network Server).
Example
The following commands configure a primary DNS server address of
192.168.100.3
and a secondary DNS
server address of
192.168.100.4
:
dns primary 192.168.100.3
dns secondary 192.168.100.4