Cisco Cisco ASR 5000
Context Configuration Mode Commands N-R
proxy-dns intercept-list ▀
Command Line Interface Reference, StarOS Release 18 ▄
2695
PPP IPCP
Request
Visited PDSN
Home DNS
PPP IPCP Rsp
(Visited DNS
address)
MIP Negotiation
DNS Query (to Visited DNS
Server)
Mobile Node
Home Agent
DNS Query
DNS Rsp
1. Intercept DNS Query
2. DNS IP Address match redirect list?
3. If yes, send proxy request to home
DNS server
2. DNS IP Address match redirect list?
3. If yes, send proxy request to home
DNS server
DNS Rsp (as if from Visited DNS
Server)
By configuring the Proxy DNS feature on the Home Agent, the foreign DNS address is intercepted and
replaced with a home DNS address while the call is being handled by the home network.
replaced with a home DNS address while the call is being handled by the home network.
Example
The following command creates a proxy DNS rules list named
list1
and places the CLI in the HA Proxy
DNS Configuration Mode:
proxy-dns intercept-list list1