公开(公告)号：US09246800B1

公开(公告)日：2016-01-26

申请号：US14134740

申请日：2013-12-19

申请人： Juniper Networks, Inc.

发明人： Sankar Ramamoorthi ,  Satyadeva Konduru ,  Gregory Kotlyar ,  Satish Raghunath ,  Sivakumar Venkatesan ,  Ramakanth Gunuganti

IPC分类号： H04L12/28 ,  H04L12/725 ,  H04L29/06

CPC分类号： H04L45/74 ,  H04L45/306 ,  H04L45/60 ,  H04L45/745 ,  H04L69/22

摘要： An example network device includes a network interface and a control unit that receives a packet having header information. The control unit includes a forwarding structure having a plurality of entries that each refers to one of a plurality of logical interfaces, a forwarding engine configured to access the forwarding structure to select a first logical interface to which to forward the packet based on the header information, wherein the first logical interface comprises a pseudo-device interface (PDI). The control unit also includes a PDI module that tunnels the packet to an external service complex (ESC) by at least applying a set of metadata to the packet, encapsulating the packet with a header, and forwarding the packet to the ESC via the network interface, and wherein the metadata allows the ESC to determine a set of services to be applied to the packet based on the metadata.

公开(公告)号：US09967185B1

公开(公告)日：2018-05-08

申请号：US15005726

申请日：2016-01-25

申请人： Juniper Networks, Inc.

发明人： Sankar Ramamoorthi ,  Satyadeva Konduru ,  Gregory Kotlyar ,  Satish Raghunath ,  Sivakumar Venkatesan ,  Ramakanth Gunuganti

IPC分类号： H04L12/28 ,  H04L12/741

CPC分类号： H04L45/74 ,  H04L45/306 ,  H04L45/60 ,  H04L45/745 ,  H04L69/22

摘要： An example network device includes a network interface and a control unit that receives a packet having header information. The control unit includes a forwarding structure having a plurality of entries that each refers to one of a plurality of logical interfaces, a forwarding engine configured to access the forwarding structure to select a first logical interface to which to forward the packet based on the header information, wherein the first logical interface comprises a pseudo-device interface (PDI). The control unit also includes a PDI module that tunnels the packet to an external service complex (ESC) by at least applying a set of metadata to the packet, encapsulating the packet with a header, and forwarding the packet to the ESC via the network interface, and wherein the metadata allows the ESC to determine a set of services to be applied to the packet based on the metadata.