公开(公告)号：US09832127B2

公开(公告)日：2017-11-28

申请号：US14935846

申请日：2015-11-09

Applicant: Cisco Technology, Inc.

Inventor： Noboshige Akiya ,  George L. Swallow ,  Carlos M. Pignataro ,  Nagendra Kumar Nainar

IPC: H04L12/28 ,  H04L12/803 ,  H04L12/723 ,  H04L12/707 ,  H04L12/801 ,  H04L12/753

CPC classification number: H04L47/125 ,  H04L45/24 ,  H04L45/48 ,  H04L45/50 ,  H04L45/507 ,  H04L47/12 ,  H04L47/122

Abstract: The present disclosure provides for carrying downstream mapping information in an echo request message and/or echo reply message, which can describe both IP (Internet Protocol) multipath information and label multipath information. A transit node (e.g., an LSR element) that receives an echo request message from an initiator node determines downstream mapping information, which is returned to the initiator node. Transit node determines whether a newly defined type of multipath information (type 10) should be generated to return the downstream mapping information, based on whether transit node performs load balancing based on labels or IP header information, and whether transit node imposes entropy labels. A multipath information type 10 element includes either IP multipath information or label multipath information, as well as associated label multipath information that includes one or more entropy labels that map to the IP or label multipath information being returned.

公开(公告)号：US20160080269A1

公开(公告)日：2016-03-17

申请号：US14935846

申请日：2015-11-09

Applicant: Cisco Technology, Inc.

Inventor： Noboshige Akiya ,  George L. Swallow ,  Carlos M. Pignataro ,  Nagendra Kumar Nainar

IPC: H04L12/803 ,  H04L12/723

CPC classification number: H04L47/125 ,  H04L45/24 ,  H04L45/48 ,  H04L45/50 ,  H04L45/507 ,  H04L47/12 ,  H04L47/122

Abstract: The present disclosure provides for carrying downstream mapping information in an echo request message and/or echo reply message, which can describe both IP (Internet Protocol) multipath information and label multipath information. A transit node (e.g., an LSR element) that receives an echo request message from an initiator node determines downstream mapping information, which is returned to the initiator node. Transit node determines whether a newly defined type of multipath information (type 10) should be generated to return the downstream mapping information, based on whether transit node performs load balancing based on labels or IP header information, and whether transit node imposes entropy labels. A multipath information type 10 element includes either IP multipath information or label multipath information, as well as associated label multipath information that includes one or more entropy labels that map to the IP or label multipath information being returned.