In Chapter 2, you saw how a networked device can be managed with SNMP. With
snmpwalk, you can retrieve operational information and make configuration changes. As useful as these programs are, they are not well suited for debugging day-to-day network problems. A tool is needed that handles all of the SNMP requests behind the scenes while presenting a simple interface to the user.
At MIT, we wrote just such a tool called Neo. Using Neo’s simple commands, we can check bandwidth usage or determine on which switch port a particular host resides. For us, it has become the bread and butter of network administration. Neo is a text-based client that is well suited to an environment in which an operator ...