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Core router

About: Core router is a research topic. Over the lifetime, 2763 publications have been published within this topic receiving 59733 citations.


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Patent
Naiming Shen1
30 Jun 2004
TL;DR: In this paper, a method and apparatus for routing and forwarding between virtual routers is described, where the first and second virtual routers have separate address spaces and separate routing tables, distributing a set of one or more routes from the first virtual router to the second virtual router.
Abstract: A method and apparatus for routing and forwarding between virtual routers is described. A method in a single network element comprises peering a first virtual router to a second virtual router, wherein the first and second virtual routers have separate address spaces and separate routing tables, distributing a set of one or more routes from the first virtual router to the second virtual router, wherein a first of the set of routes identifies the first virtual router as a next hop of the first route, said first route including a destination, and downloading to a set of one or more forwarding tables, the destination and the next hop.

215 citations

Journal ArticleDOI
TL;DR: Two approaches to the design of a high-performance router, the gigabit router and the IP switch are examined, and some detail on the implementation of an IP switch and the protocols associated with IP switching is provided.
Abstract: To cope with the growth in the Internet and corporate IP networks, we require IP routers capable of much higher performance than is possible with existing architectures. This article examines two approaches to the design of a high-performance router, the gigabit router and the IP switch, and then provides some detail on the implementation of an IP switch and the protocols associated with IP switching.

215 citations

Patent
18 Apr 2006
TL;DR: In this article, a router within the broadcast network receives a link state protocol routing information advertisement from an advertising router, e.g., a designated router or other adjacent neighbor, and determines whether the next-hop is located within the same broadcast network (e.g. subnet) as the designated router.
Abstract: A technique dynamically configures and verifies routing information of broadcast networks using link state protocols in a computer network. According to the novel technique, a router within the broadcast network receives a link state protocol routing information advertisement from an advertising router, e.g., a designated router or other adjacent neighbor. The router learns of a next-hop router (“next-hop”) to reach a particular destination from the advertisement, and determines whether the next-hop is located within the same broadcast network (e.g., subnet) as the designated router. If so, the router further determines whether the next-hop is directly addressable (i.e., reachable), such as, e.g., by checking for link adjacencies to the next-hop or by sending request/reply messages (e.g., echo messages or “ping” messages) to the next-hop. In the event the next-hop for the destination is not directly addressable by the router (e.g., no adjacency or reply), the router installs a route to the destination via the designated router. Otherwise, the router installs a route to the destination via the next-hop.

212 citations

Patent
23 Feb 2001
TL;DR: In this article, a system and technique restarts a data plane of an intermediate node, such as an aggregation router, of a computer network without changing the state of a control plane in the router.
Abstract: A system and technique restarts a data plane of an intermediate node, such as an aggregation router, of a computer network without changing the state of a control plane in the router. The aggregation router comprises a control plane that includes a supervisor processor configured to manage traffic forwarding operations of the node. To that end, the supervisor processor maintains a current state of the control plane pertaining to, e.g., routing protocols and interface states of line cards within the router. The aggregation router further comprises a data plane that includes hardware components, such as a forwarding engine, configured to perform forwarding operations for data forwarded by the router.

211 citations

Patent
09 Dec 1996
TL;DR: In this article, a service management system (SMS) is proposed to manage network connections between a series of client systems and a router, where each network user maintains a profile of filtering rules.
Abstract: A method and apparatus for controlling access to services within a computer network is provided. More specifically, the present invention includes a services management system, or SMS. The SMS manages network connections between a series of client systems and a router. An access network control server (ANCS) manages the configuration of the router. For each network user, the SMS maintains a profile of filtering rules. When the user accesses the network, the SMS downloads the user's filtering profiles to the ANCS. The ANCS then uses the downloaded filtering profiles to reconfigure the router. The router then uses the filtering rules to selectively forward IP packets originating from the user's host system and directed at the network services.

208 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20237
202219
20213
202011
201915
201823