Updating cisco ios 2950

Many Catalyst switches that run IOS are also capable of functioning as a router, making them layer 3 devices; when coupled with TCP and UDP filtering, these switches are capable of layer 2-4 operation.Depending on the exact software image, a Catalyst that runs IOS may be able to tackle large-scale enterprise routing tasks, using router technologies like OSPF or BGP.

Cisco renamed it to Cat OS when they acquired Crescendo in late 1993.Cat OS (Catalyst Operating System) is the discontinued operating system for many of the Catalyst brand of legacy network switches.Cat OS ran on switches such as 1200, 2948G, 4000, 4500, 5000, 5500, 6000, 6500 series.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.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.

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