Figure 12-1 Model-Driven Programmability on
Cisco Devices
NETCONF
In an effort to better address the concerns of network
operators, the Internet Engineering Task Force (IETF)
and the Internet Architecture Board (IAB) set up a
workshop on network management in 2002. Several
network operators were invited, and workshop
participants had a frank discussion about the status of
the network management industry as a whole. The
conclusions and results of that workshop were captured
in RFC 3535. Up to that point the industry had been
extensively using Simple Network Management Protocol
(SNMP) for network management. SNMP is discussed in
more detail in Chapter 18, “IP Services,” but for the
purposes of this chapter, you just need to know that
SNMP is a network management protocol that was
initially developed in the late 1980s. The intention with
SNMP was to create a protocol to help with both
configuration and monitoring of network devices.
Several iterations of the protocol have been developed
through the years, and version 3 is the latest one. SNMP
has been extensively implemented by network vendors in
their devices and used by network operators. By the