Khkris,  To expand on What Luc said, the switches sold and installed by EMC are not managed.  Now that's not to say that they are not manageable, however we do not require, nor as a matter of standard delivery practice do we connect them to a customer's network for management or monitoring.  We monitor IB based upon the data flowing in and out of our IB cards in the nodes themselves. That said, you can from a node on the cluster as root, get some detail about the switches. (model number, number of ports and manufacturer, plus GUID).  isi02-1# cat /var/log/opensm*.topo | grep "Device\[0\]" Device[0]  =>         0002c9020046403b  0002c90200464038  (SW,  8) Infiniscale-IV Mellanox Technologies Device[0]  =>         0002c902004717db  0002c902004717d8  (SW,  8) Infiniscale-IV Mellanox Technologies isi02-1#  For some basics about IB, if you're interested, Mellanox has a nice primer here: [URL]  If you really want the switch serial numbers at this time, my recommendation is to either: a) look at your EMC Packing list, which should contain the information b) look at the switches themselves and record the serial numbers for later use.  I realize that this is often difficult or impossible if you are not in the same building as the cluster in question, however asking someone at a CoLo or a remote datacenter to document the serials should be very low effort. I don't know what kind of switches you have, but for my 8-port mellanox QDR switches in the lab the details on where to get the serial number are at the bottom of page 10/ top of page 11 here: [URL]   The opensm*.log files that Luc mentioned show a nicer graphical representation of the IB network, but still the GUID is all that is shown per switch.  Hope this helps, if it does answer your question, please mark it as answered.  Thanks, Chris Klosterman Senior Solution Architect EMC Isilon Offer & Enablement Team twitter: [NAME] email: chris.klosterman[NAME].com
What is the command to verify Infini band Serial numbers
Infiniband Serial Numbers