公开(公告)号：US10419356B1

公开(公告)日：2019-09-17

申请号：US15657113

申请日：2017-07-22

Applicant: Juniper Networks, Inc.

Inventor： Prashant Singh ,  Sairam Neelam

IPC: H04L12/805 ,  H04L12/26 ,  H04L12/825 ,  H04L12/24

Abstract: The disclosed apparatus may include (1) forwarding, along a network path, a test packet that is (A) destined for an invalid port on a destination device and (B) fragmented by an intermediary device within the network path according to an MTU value of a network interface on the intermediary device, (2) receiving an error packet sent by the destination device in response to having determined that the test packet is destined for the invalid port, (3) determining a PMTU value of the network path by identifying, within the error packet, a size of the largest fragmented segment of the test packet received by the destination device, and then (4) forwarding, along the network path, at least one packet sized to comply with the PMTU value such that the packet remains unfragmented upon reaching the destination device. Various other apparatuses, systems, and methods are also disclosed.

公开(公告)号：US09407526B1

公开(公告)日：2016-08-02

申请号：US14617777

申请日：2015-02-09

Applicant: Juniper Networks, Inc.

Inventor： Meher Aditya Kumar Addepalli ,  Prashant Singh

IPC: H04L12/26

CPC classification number: H04L43/10 ,  H04L41/0677 ,  H04L41/12 ,  H04L43/08 ,  H04L43/0811 ,  H04L45/20 ,  H04L45/74 ,  H04L47/17 ,  H04L47/28 ,  H04L47/31

Abstract: In general, techniques are described to dynamically refresh a timer for a communication session provided by a bidirectional forwarding detection (BFD) protocol. The techniques potentially mitigate network load by reducing the number of BFD packets required to maintain a BFD communication session. An example network device includes a memory, programmable processor(s), a network interface, and a control unit configured to establish a BFD communication session between the network device and a peer network device that is communicatively coupled to the network device via the network interface, determine whether a packet associated with a communication session other than the BFD communication session is a relevant packet to the BFD communication session, and in response to determining that the packet is the relevant packet, refresh a timer that executes on the network device and is associated with the BFD communication session.