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Integration of an operative standalone router into a multi-chassis router

  • US 7,552,262 B1
  • Filed: 08/31/2005
  • Issued: 06/23/2009
  • Est. Priority Date: 08/31/2005
  • Status: Active Grant
First Claim
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1. A method comprising:

  • transitioning an operative standalone router into a first component of a multi-chassis router while continuing to operate the standalone router in a standalone mode, wherein the transitioning comprises;

    incrementally replacing standalone switch cards within the operative standalone router with multi-chassis switch cards;

    forwarding a portion of network traffic to a second component of the multi-chassis router via one or more of the multi-chassis switch cards during the incremental replacement; and

    receiving the portion of network traffic from the second component via the one or more of the multi-chassis switch cards,wherein the standalone router is a core router in a service provider network, wherein the portion of network traffic is a first portion of network traffic, the method further comprising;

    receiving the network traffic via the service provider network;

    forwarding the first portion of the network traffic to destination devices on the service provider network using the multi-chassis switch cards after receiving the first portion of the network traffic from the second component of the multi-chassis router; and

    forwarding a second portion of the network traffic directly to destination devices on the service provider network using the standalone switch cards.

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