![]() Though still maintaining the terms switch and router in their product names, Cisco divided their high-end networking products by market. At the same time, the enterprise market was diverging from the service provider market. As products became more sophisticated, the distinction between a switch and a router became blurred as high-end switches began to route traffic in addition to bridging, and likewise routers began to perform L2 switching. Switches bridged (transmitted) L2/ Ethernet traffic, and a router forwarded (transmitted and routed) 元/ IP traffic. Networking equipment was traditionally categorized by functionality as being either a switch or a router. The highest end of the lineup, the ASR 9000 series, is intended for service provider (SP) core networks. The Cisco Aggregation Services Router (ASR) series of routers are modular routers produced by Cisco Systems. ( Learn how and when to remove this template message) JSTOR ( June 2012) ( Learn how and when to remove this template message). ![]() Please improve this article by adding secondary or tertiary sources. This article relies excessively on references to primary sources.
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