JettyPraveen
I'd recommend looking at your /etc/hosts file to see what is configured in there. Typically you'd need something like this.
10.x.x.x dns.company.com
127.0.0.1 localhost servername.company.com
Now try using IgnoreHost ACO Parameter. If it still doesn't work, remove IgnoreHost and try below.
One of the suggestion I'd recommend is to use "AgentName" parameter in ACO.
Basic Agent Setup and Policy Server Connections - CA Single Sign-On - 12.8 - CA Technologies Documentation
Create three WebAgent Object in WAMUI, e.g. wa_dns, wa_localhost and wa_server.
Edit your ACO, disable DefaultAgentName, Enable AgentName as Multi-Value Attribute.
wa_dns,dns.company.com
wa_localhost,localhost
wa_server,servername.company.com
Now map only wa_dns to the realm protecting /*
Regards
Hubert