Hi, Apologies for a very trivial question. I am trying to find out whether the HSSI interface (PA-H) for the 7200 contains the IOS sub-command clock rate 'bps'. In other words does it cater for standard serial variable clock rate. I am aware that for standard serial interfaces the command is always available however, perusing over Cisco documentation, in particular the URL below specifies the command is available, however, upon further investigation the clock rate command is linked to the interface serial x/x command and does not seem to be present under the interface hssi x/x command. http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/cfig_nts/3280 hssi/3280conf.htm#36726 Would appreciate is you could shed some light for me! Thanks Again. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=16644&t=16644 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]