00457nam a2200157Ia 4500003000600000005001700006008004100023020001800064040002500082082002800107100002000135245006400155260003200219300002600251500002200277NORSU20240426005632.0240215s9999 xx 000 0 und d a1-58713-171-4 aNORSU-DumcNORSU-Dum a621.3815372/J63/C1/2007 aJohnson, Allan  0aSwitching basics and intermediate routingcby Allan Johnson bCisco pressc2007aIndiana  axv, 389 pages; 27 cm. aincludes appendix