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公开(公告)号：US20210119830A1
公开(公告)日：2021-04-22
申请号：US16655163
申请日：2019-10-16
IPC分类号： H04L12/46 , H04L12/721 , H04L12/24 , H04L12/751 , H04L12/851
摘要： Virtual network identifiers are extracted from route advertisements. A table associates virtual network identifiers with provider edge devices. When a virtual network identifier extracted from a route advertisement matches a virtual network identifier in the table, the route advertisement is propagated to the provider edge devices associated with that virtual network identifier in the table. The route advertisement is not propagated to provider edge devices not associated with that virtual network identifier in the table.
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公开(公告)号：US20240243997A1
公开(公告)日：2024-07-18
申请号：US18154629
申请日：2023-01-13
摘要： A networking system may perform border gateway protocol (BGP) switchover. In particular, the networking system may execute an active BGP process based on a set of received input states and execute a standby BGP process based on the set of received input states independently of the execution of the active BGP process based on the set of received input states.
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公开(公告)号：US20230327991A1
公开(公告)日：2023-10-12
申请号：US17739668
申请日：2022-05-09
IPC分类号： H04L45/745 , H04L45/12
CPC分类号： H04L45/745 , H04L45/124 , H04L45/04
摘要： A method for distributing an optimal path to a router using a route reflector, that includes obtaining, by the route reflector, a path location bitmask associated with the optimal path, obtaining a router location bitmask associated with the router, performing a bitwise AND operation on the path location bitmask and the router location bitmask to obtain a result bitmask, identifying a nonzero bit in the result bitmask, and in response to identifying the nonzero bit, sending the optimal path to the router.
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公开(公告)号：US20220103425A1
公开(公告)日：2022-03-31
申请号：US17108405
申请日：2020-12-01
发明人： Alton Lo , Rajesh Semwal , Isidoros Kouvelas , Amit Ranpise
摘要： Systems and methods are provided herein for a mechanism for faster convergence of network traffic after a network device's link is interrupted by leveraging the withdrawal of the ethernet virtual private network (EVPN) auto discovery (AD) route. This may be accomplished by a first device checking an ethernet segment identifier (ESI) status flag before generating an entry in the first device's forwarding table, where the entry is based on an IP route for a host received by a second network device. In response to receiving a withdrawal of an EVPN AD route from the second device, the first device may update the ESI status flag to indicate that the host on the ethernet segment (ES) is reachable only via the third device and update the entry that was based on the IP route for the host received by the second network device to prevent sending traffic to the host via the second device.
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公开(公告)号：US20210160101A1
公开(公告)日：2021-05-27
申请号：US16696884
申请日：2019-11-26
IPC分类号： H04L12/46 , H04L12/935 , H04L12/66
摘要： Security policies are translated into access-control list entries and can be stored by switches in the computer network. When a new device is connected to the computer network, the device may be resolved to the group for which it is a member and an ACL entry may be created for the new device. In networks having redundant switches, the ACL entries may be stored by each redundant network switch.
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公开(公告)号：US20240243998A1
公开(公告)日：2024-07-18
申请号：US18154543
申请日：2023-01-13
摘要： A networking system may facilitate Border Gateway Protocol (BGP) switchover between an active BGP process and a standby BGP process. A method is provided that includes using the active BGP process to establish a communication session with a peer, to add the peer to an outbound update group listing one or more peers sharing the same outbound policy, and to add a dummy peer corresponding to the peer to the outbound update group in response to receiving a synchronization request from the standby BGP process. The active BGP process can advertise a collection of routes to the standby BGP process in accordance with the dummy peer being listed in the outbound update group. The active BGP process can then perform outbound BGP message hairpinning operations with the standby BGP process.
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公开(公告)号：US11223499B2
公开(公告)日：2022-01-11
申请号：US16696884
申请日：2019-11-26
IPC分类号： H04L12/46 , H04L12/66 , H04L12/935
摘要： Techniques described herein relate to a method for generating a table for forwarding traffic between networks that are implemented using different types of control planes. In one or more embodiments, the method comprises: receiving a first route advertisement for a first network; extracting a first next hop identifier-multiprotocol label switching (MPLS) label combination; receiving another route advertisement for the first network; and in response to determining that a local label has not been assigned to the first next hop identifier-MPLS label combination: generating a first entry and adding the first entry to a forwarding table of the gateway device.
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公开(公告)号：US20220150312A1
公开(公告)日：2022-05-12
申请号：US17097925
申请日：2020-11-13
发明人： Amit Ranpise , Rajesh Semwal , Isidoros Kouvelas
IPC分类号： H04L29/08 , H04L12/741 , H04L12/66 , H04L12/46 , H04L29/12
摘要： Techniques disclosed herein provide a method for configuring a network in DCI environment. An EVPN session is established between a first gateway device of a first network, and a second gateway device of a second network that are linked by L2 DCI link. An ESI is allocated for that EVPN session. A label is created for every combination of the ESI and media access control virtual routing and forwarding table (MAC VRF) that is locally configured at the first gateway device. An EVPN path is received for a host in the first network that is associated with MAC VRF. The path in imported the first MAC VRF by the first gateway device and exported via the inter-DCI EVPN session. The second gateway device identifies a label for MAC and re-exports it in local EVPN session with the identified label.
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公开(公告)号：US11178045B2
公开(公告)日：2021-11-16
申请号：US16174201
申请日：2018-10-29
IPC分类号： H04L12/707 , H04L12/46
摘要： A method for operating an Ethernet virtual private network includes advertising, by a peer of the Ethernet virtual private network, virtual local area network routing information based on an integrated routing and bridging interface of the peer; making a determination that an Ethernet segment directly connecting a multi-homed host and the peer has failed; in response to the determination: withdrawing, by the peer, a first route of a first type of route associated with the Ethernet segment; maintaining, by the peer, a first route of a second type of route associated with the multi-homed host for a predetermined time after the Ethernet segment has failed; and forwarding, by the peer, a packet while the Ethernet segment has failed.
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公开(公告)号：US20240244124A1
公开(公告)日：2024-07-18
申请号：US18155302
申请日：2023-01-17
IPC分类号： H04L69/16 , H04L45/02 , H04L45/74 , H04L47/34 , H04L67/141
CPC分类号： H04L69/161 , H04L45/04 , H04L45/74 , H04L47/34 , H04L67/141
摘要： A networking system may facilitate Border Gateway Protocol (BGP) switchover between an active BGP process and a standby BGP process. A method is provided that includes using the active BGP process to establish a first communication session with a peer and a second communication session with the standby BGP process and using an active kernel associated with the active BGP process to receive a packet from the peer, to transmit the packet to the standby BGP process, and to receive the packet returning from the standby BGP process. The active kernel can optionally be used to determine whether any packets are in-flight to and from the standby BGP process.
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