METHODS AND APPARATUS FOR SWITCHING BETWEEN METRO ETHERNET NETWORKS AND EXTERNAL NETWORKS

METHODS AND APPARATUS FOR SWITCHING BETWEEN METRO ETHERNET NETWORKS AND EXTERNAL NETWORKS

According to the present invention, methods and apparatus are provided to allow efficient switching of frames for transmission between a Layer 2 Virtual Local Area Network such as a Metro Ethernet Network and an external network. Reserved inner tags are used to identify particular services. In one e...

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Hauptverfasser: WU, MICHAEL, INDIRESAN, ATRI, VICKROY, JOHN
Format: Patent
Sprache:eng ; fre
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ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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creator WU, MICHAEL
INDIRESAN, ATRI
VICKROY, JOHN
description According to the present invention, methods and apparatus are provided to allow efficient switching of frames for transmission between a Layer 2 Virtual Local Area Network such as a Metro Ethernet Network and an external network. Reserved inner tags are used to identify particular services. In one example, inner tags allow mapping of frames associated with a particular subnetwork onto a particular virtual circuit associated with an ATM network. Selon la présente invention, on prévoit des procédés et un appareil assurant une commutation efficace de trames en vue de la transmission entre un réseau local virtuel à couche 2, tel qu'un réseau Métro Ethernet et un réseau externe. On utilise des indicateurs internes réservés pour identifier des services particuliers. Selon une variante, les indicateurs internes permettent la mise en correspondance de trames associées à un sous-réseau particulier sur un circuit virtuel particulier associé à un réseau ATM.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
title METHODS AND APPARATUS FOR SWITCHING BETWEEN METRO ETHERNET NETWORKS AND EXTERNAL NETWORKS
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