ALEXANDRIA, Va., June 25 -- United States Patent no. 12,341,663, issued on June 24, was assigned to Cisco Technology Inc. (San Jose, Calif.).

"Diagnosing intermediary network nodes" was invented by Kevin J. Klous (Raleigh, N.C.), Jay Kemper Johnston (Raleigh, N.C.), Magnus Mortensen (Cary, N.C.) and David C. White Jr. (St. Petersburg, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "This disclosure describes techniques for diagnosing a presence or malfunction of a network node. In an example method, a first network node receives an indication of a diagnostic transmission originating from a second network node. The second network node further receives a forwarded transmission corresponding to the diagnosti...