Some newer Catalyst switch models (with recent versions of the Cisco IOS) also allow web-based management using a graphical interface (GUI) module which is hosted on a HTTP server located on the switch.
The Catalyst 3750-series of switches is an example of a Cisco Catalyst switch that allows this style of GUI via HTTP.
The chassis provides power and a high-speed backplane, the line cards provide interfaces to the network, and the supervisor engine moves packets, participates in routing protocols, etc.
This gives several advantages: Additionally, most high-end switches off-load processing away from the supervisors, allowing line cards to switch traffic directly between ports on the same card without using any processing power or even touching the backplane.
It was originally called XDI by the switching company Crescendo Communications, Inc.
Cisco renamed it to Cat OS when they acquired Crescendo in late 1993.
In hybrid mode, the NMP (switch processor) runs Cat OS and the route processor runs Cisco IOS.
Simple Network Management Protocol (SNMP) allows monitoring of many states, and measurement of traffic flows. Configuration of the switch is done in plain text and is thus easy to audit.
No special tools are required to generate a useful configuration.
The 1700, 1900, and 2800 series Catalysts came from Grand Junction Networks, and the Catalyst 3000 series came from Kalpana in 1994.
In most cases, the technology for the Catalyst Switch was developed separately from Cisco′s router technology.