Ping to XI Server unsuccessful in SICF

Hi,

In SICF, under SAP > Public > <b>Ping</b> . when we test that, the server tries to ping the URL

http://abc.cdf.local:8000/sap/public/ping?sap-client=100

But we don't get any successfuly pinged message. But this is not the case with other R/3 boxes that we have in our landscape. We get a succeessfully pinged message in the other servers.

Is this ping successful by default. Or we need to configure anythingelse in XIServer to make this work??

Cheers,

Siva Maranani