公开(公告)号：US10728137B1

公开(公告)日：2020-07-28

申请号：US16147008

申请日：2018-09-28

Applicant: Juniper Networks, Inc.

Inventor： Abhishek Chakraborty ,  Abhishek Asthana ,  Jagathpathi Dasararaju ,  Joya Neema ,  Rajesh Shetty Manur

IPC: H04L12/751 ,  H04L12/761

Abstract: The potential problem of traffic loss during a period when a second PIM router is elected DR after a first PIM router (on the same PIM interface) was previously elected DR and is transiting multicast traffic, is solved by (1) configuring a first interval on a PIM interface for at least the first PIM router; (2) responsive to the PIM interface of the first PIM router booting up, (i) starting, by the first PIM router, a timer corresponding to the configured first interval, (ii) determining, by the first PIM router, whether or not it is the DR on the PIM interface, (iii) upon determining that the timer has expired, redetermining, by the first PIM router, whether or not it is the DR on the PIM interface, and (iv) responsive to a redetermination that the first PIM router is the DR on the PIM interface, (A) increasing, by the first PIM router, a DR priority value of the first PIM router to reduce a likelihood that another of the at least two PIM routers will replace the first PIM router as DR, and (B) sending on the PIM interface, by the first PIM router, a PIM HELLO message including the increased DR priority value.