×

PE device and method for advertising information about PE device

  • US 10,461,998 B2
  • Filed: 12/29/2015
  • Issued: 10/29/2019
  • Est. Priority Date: 06/29/2013
  • Status: Active Grant
First Claim
Patent Images

1. A method for advertising information about a first provider edge (PE) device in a Border Gateway Protocol-based multicast virtual private network (BGP-based MVPN), the method comprising:

  • receiving, by the first PE device, configuration information describing a role and a working status of the first PE device as a node in the BGP-based MVPN that supports point-to-multipoint tunneling among nodes forming the BGP-based MVPN;

    generating, by the first PE device, a BGP update message, including network layer reachability information (NLRI) comprising an IP address of the first PE device, an identifier of the BGP-based MVPN, and the role of the first PE device and working status of the first PE device,wherein the role of the first PE device in the BGP-based MVPN is at least one of a root node and a leaf node, and the working status is either active or standby;

    determining, by the first PE device, an IP address of an active leaf node in the BGP-based MVPN that is protected by the first PE device when the role of the first PE device is the leaf node and the working status of the first PE device is standby; and

    sending, by the first PE device, the BGP update message in the BGP-based MVPN in a first or second manner, depending on whether the role of the first PE device is a root or leaf node in the BGP-based MVPN,wherein the first manner includes sending the BGP update message without prompting by another node in the BGP-based MVPN and the second manner includes sending the BGP message after receiving a message from an active root node in the BGP-based MVPN,wherein the BGP update message is sent in the first manner and comprises the IP address of the active leaf node when the first PE device determines that the role of the first PE device is the leaf node and the working status of the first PE device is standby, andwherein sending the BGP update message in the first manner comprises (a) first information indicating that the BGP update message carries the role of the first PE device and the working status of the first PE device, (b) a route distinguisher (RD) of an instance of the BGP-based MVPN on the first PE device, and (c) the RD is used as the identifier of the BGP-based MVPN.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×