Hi Kyle, There should be little inbound traffic unless that machine is used for more than just xrootd services. What machine are we talking about? Andy -----Original Message----- From: Kyle Fransham Sent: Thursday, June 23, 2011 7:48 AM To: xrootd-l Subject: inbound traffic Hi all, We've got a single xrootd server serving out BaBar root files over the WAN. We notice that there is a lot of inbound traffic, even though our files are exported read-only. Attached is a network plot showing the traffic on the xrootd interface for four simultaneous user analysis jobs. (In case you can't see the attachment, the inboud traffic tends to be about 75% of the outbound traffic.) Is this expected behaviour? Thanks, Kyle