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Route flapping is caused by pathological conditions (hardware errors, software errors, configuration errors, intermittent errors in communications links, unreliable connections, etc.) within the network which cause certain reachability information to be repeatedly advertised and withdrawn.
To do this, a router needs to search the routing information stored in its routing table. The routing table contains network/next hop associations. These associations tell a router that a particular destination can be optimally reached by sending the packet to a specific router that represents the next hop on the way to the final destination.
DD-WRT is Linux-based firmware for wireless routers and access points.Originally designed for the Linksys WRT54G series, it now runs on a wide variety of models.DD-WRT is one of a handful of third-party firmware projects designed to replace manufacturer's original firmware with custom firmware offering additional features or functionality.
Each unit had 32k of NVRAM, used for storage of the startup configuration. Some 2500 models (e.g. 2511) had a PCMCIA slot installed on the board. It was intended that Cisco would send IOS updates on PCMCIA, which would then update the router.
Vyatta is a software-based virtual router, virtual firewall and VPN products for Internet Protocol networks (IPv4 and IPv6). A free download of Vyatta has been available since March 2006. A free download of Vyatta has been available since March 2006.
In electronics, a wafer (also called a slice or substrate) is a thin slice of semiconductor, such as a crystalline silicon (c-Si), used for the fabrication of integrated circuits and, in photovoltaics, to manufacture solar cells.