A lisp domain fault detection convergence method and device

Abstract

The invention discloses an LISP (Location / ID Separation Protocol) domain fault detection convergence method and equipment. The method comprises the following steps: a first tunneling router starts a first timer T1 for a second tunneling router; the first tunneling router receives an LISP monitoring message from the second tunneling router; if the first tunneling router does not receive the LISP monitoring message from the second tunneling router before the first timer expires, the first tunneling router confirms that the second tunneling router is out of order; the first tunneling router confirms that the IP address of the second tunneling router is that of the first tunneling router and distributes a routing carrying the IP address of the second tunneling router to the outside. In the embodiment of the invention, the service interruption is avoided, and flow packet loss is avoided.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and equipment for fault detection and convergence in LISP domain. Background technique [0002] like figure 1 As shown, it is a schematic diagram of LISP (Location / ID Separation Protocol, Location and Identity Separation Protocol) network. The LISP network will divide the network IP address into EID (Endpoint ID, terminal identification) and RLOC (Routing Locator, routing location ). Among them, the EID-to-RLOC mapping relationship will be introduced into the LISP network. The EID is used to identify the host and does not have the global routing function, and the RLOC is used for the entire network routing. In a LISP network, an IPv4 or IPv6 host only identifies its ID, and its location is identified by ITR (Ingress Tunnel Router, tunnel entry router) / ETR (Egress Tunnel Router, tunnel exit router). ITR and ETR are relative, according to report The text directio...

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Problems solved by technology

[0004] However, when ETR1 fails, since the EID-to-RLOC mapping relationship maintained on ITR1 will include the correspondence between the IP address of host D and the IP address of ETR1, the report sent by host S to host D ITR1 may send the message to ETR1, but because ETR1 has failed at this time, ETR1 cannot send the message to host D, the service is interrupted, and traffic packet loss will occur

Further, the service interruption time will last until ITR1 learns that ETR1 has failed. This time is longer, that is, the service interruption time is longer, so a large amount of traffic will be lost

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