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1.发明公开
公开(公告)号：EP4366265A1
公开(公告)日：2024-05-08
申请号：EP23161277.1
申请日：2023-03-10
摘要： A first network device may receive a first advertisement of a network destination from a second network device and may detect multihoming with the second network device. The second network device may detect the multihoming with the first network device. The first network device and the second network may enable egress protection for the multihoming. The first network device may allocate, from a first pool, a protection group identifier for a group of multihomed network devices and may allocate, from a second pool, a network destination identifier for the network destination. The first network device may provide, to a network and the second network device, a second advertisement that includes the protection group identifier and the network destination identifier. The protection group identifier and the network destination identifier may cause the network to direct traffic for the network destination, via the group of multihomed network devices.
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公开(公告)号：EP3070877B1
公开(公告)日：2019-08-28
申请号：EP16159931.1
申请日：2016-03-11
发明人： LIN, Wen , DRAKE, John E. , ZHANG, Zhaohui
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公开(公告)号：EP3041180B1
公开(公告)日：2018-09-12
申请号：EP15178621.7
申请日：2015-07-28
发明人： ZHANG, Zhaohui , BABAN, Alex
IPC分类号： H04L12/761 , H04L12/931 , H04L12/935
CPC分类号： H04L45/16 , H04L49/201 , H04L49/30 , H04L49/3009
摘要： A network device receives multicast packets that include information identifying destinations in the network, identifies next hops associated with the destinations, and populates a cache with the destinations and addresses of the identified next hops. The network device receives a particular multicast packet that includes information identifying particular destinations included in the cache, identifies one or more next hops for the particular destinations from the cache, and forwards the particular multicast packet to the identified one or more next hops to permit the identified one or more next hops to forward the multicast packet toward the particular destinations.
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公开(公告)号：EP4429188A1
公开(公告)日：2024-09-11
申请号：EP23211384.5
申请日：2023-11-22
CPC分类号： H04L45/04 , H04L45/50 , H04L45/34 , H04L12/4633 , H04L45/566
摘要： An interworking network device receives from a first other network device associated with an MPLS domain, a route that includes a label, a prefix, and a next-hop identifier that indicates the first other network device. The interworking network device thereby generates a prefix SID attribute that includes a SID value and information indicating a structure of the SID value, wherein a LOC portion of the SID value identifies the interworking network device, and a first sub-portion of a FUNCT portion of the SID value identifies an endpoint behavior of the interworking network device in association with the first other network device. The interworking network device modifies the route to cause the next-hop identifier to indicate the interworking network device, and to cause the route to include the prefix SID attribute. The interworking network device thereby sends the route to a second other network device associated with an SRv6 domain.
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5.发明公开
公开(公告)号：EP4401364A1
公开(公告)日：2024-07-17
申请号：EP23217707.1
申请日：2023-12-18
IPC分类号： H04L12/46
CPC分类号： H04L12/4641
摘要： Reducing convergence time and/or avoiding split-brain in multi-homed ethernet segment deployments, such as ESI-LAG deployments. In an Ethernet Virtual Private Network (EVPN) with a multi-homed Ethernet Segment (MHES), potential problems of core isolation are avoided in a way that also avoids the potential "split brain" problems.
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公开(公告)号：EP4391475A1
公开(公告)日：2024-06-26
申请号：EP23219022.3
申请日：2023-12-21
发明人： ZHANG, Zhaohui
IPC分类号： H04L43/026 , H04L45/64
CPC分类号： H04L47/806 , H04L61/5069 , H04L65/611
摘要： BIER architecture currently does not support anycast, in that each BIER Forwarding Router (BFR) has its own unique BFR-prefix and BFR-ID. BIER signaling protocols also check if there are duplicate BFR-IDs advertised. Anycast support with BIER is described. The description updates (e.g., relaxes and/or removes some requirements of) RFC 8279, RFC 8401, and RFC 8444.
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公开(公告)号：EP3913871A1
公开(公告)日：2021-11-24
申请号：EP21175190.4
申请日：2021-05-21
IPC分类号： H04L12/751 , H04L12/713 , H04L12/715
摘要： Techniques are described by which a routing protocol, such as border gateway protocol (BGP), is extended to control propagation and importation of information using route targets (RTs) specified as bitmasks that encode link administrative group information. For example, a network control device (e.g., controller) is configured to allocate one or more subset of resources (e.g., nodes or links) of an underlay network to each of one or more virtual networks established over the underlay network. The controller generates a bitmask encoded with link administrative group information of the one or more links. The controller then outputs, to a plurality of provider edge (PE) routers that are participating in a respective virtual network, a routing protocol message to advertise the one or more subset of resources, wherein the routing protocol message includes a route target specified as the bitmask.
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公开(公告)号：EP3382956A1
公开(公告)日：2018-10-03
申请号：EP18154526.0
申请日：2018-01-31
发明人： ZHANG, Zhaohui
IPC分类号： H04L12/761 , H04L12/753 , H04L12/723 , H04L12/717
摘要： The disclosed computer-implemented method may include (1) receiving, at an upstream router of a multicast distribution tree, a packet that is destined for a receiver within an MPLS network, (2) identifying within the packet (A) a context label that specifies a controller and (B) a tree label that is assigned by the controller, (3) identifying a forwarding table that corresponds to the context label identified within the packet, (4) searching the forwarding table that corresponds to the context label for the tree label that specifies the multicast distribution tree, (5) identifying, based at least in part on the search, a downstream router of the multicast distribution tree that is to receive the packet on the way to the receiver, and then (6) forwarding the packet to the downstream router of the multicast distribution tree on the way to the receiver. Various other methods, systems, and apparatuses are also disclosed.
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公开(公告)号：EP3113412B1
公开(公告)日：2018-09-05
申请号：EP16175935.2
申请日：2016-06-23
发明人： CALLON, Ross W. , ZHANG, Zhaohui , ZHANG, Hongwen
IPC分类号： H04L12/771 , H04L12/18
CPC分类号： H04L45/12 , H04L12/1854 , H04L45/24 , H04L45/54
摘要： A network device creates a forwarding table that includes information associated with a set of destinations in a network, and determines next hops for the set of destinations. The network device populates the forwarding table with information associated with the next hops, and stores the forwarding table. The forwarding table is used to forward a multicast packet toward a multiple destinations, and includes separate entries that depend upon routes the multicast packet is to traverse towards destinations with multiple choices for next hops.
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公开(公告)号：EP4181617A1
公开(公告)日：2023-05-17
申请号：EP22180545.0
申请日：2022-06-22
摘要： In an example, a method comprises executing, by an access network user plane function (ANUP) for a mobile network, an access network protocol to implement a connection with a user equipment (UE); implementing, by the ANUP, based on session data received from a control plane function of a mobile core network for the mobile network, an interface with a data network; and routing or switching, by the ANUP, packets between the connection with the UE and the interface with the data network.
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