Alias not work for CRM_UI_Start

Hi Experts,

I want to shorten the link of the CRM UI http://<host>:<port>/sap/bc/bsp/sap/crm_ui_start/default.htm?sap-client=001&sap-sessioncmd=open. I found that alias name of the service can be used to access the same link.

So when I check the transaction for the service CRM_UI_START I can see two alias namely "/default_host/sap/crm_logon" & "/default_host/sap/uif_logon".

But when I logon with the link "http://<host>:<port>/sap/crm_logon" I face the error "Service Cannot be reached".

Kindly advise.

Thanks in advance.

Vivek.