error when i am deploying WD Application

Hi

When i am deploying WD Application from Netweaver Developer Studio the follwing error comming

SDM host : epserver

SDM port : 50218

URL to deploy : file:/C:/DOCUME_1/VENKAT1.RED/LOCALS~1/Temp/temp50744WebApplication.ear

Deployment exception : Server epserver did not accept login request as admin on port 50218. Details: ERROR: Could not establish connection to server epserver at port 50218: Connection timed out: connect

Inner exception was :

Server epserver did not accept login request as admin on port 50218. Details: ERROR: Could not establish connection to server epserver at port 50218: Connection timed out: connect

So please let me know the reasion for this error.

regards

mmukesh