Huawei Technologies Co., Limited

Guangrui Wu

Ying Xie

Weiguo Hao

Pu Cheng

Qinfeng Gu

Yan Zhang

Zhongfang Lin

Yihong Li

Yinwei Luo

Qingsong Zhou

Chengsong Zhang

Changgui Zhan

Hao Qi

Chao Ye

A route priority configuration method, a device, and a controller. The controller receives an interface creation request for creating a layer 3 interface on a target device, where the interface creation request carries an IP address and a subnet mask. The controller generates a direct route of the layer 3 interface based on the interface creation request; allocates a route priority to the direct route according to a preset allocation rule; and sends the direct route and the route priority corresponding to the direct route to the target device. According to the embodiments, direct routes generated based on a same IP address can correspond to different route priorities, to avoid a case in which direct routes advertised by different distributed gateways form ECMP, and improve route priority configuration efficiency.

Route priority configuration method, device, and controller

A method for packet forwarding based on equal-cost multi-path and a network device, in order to resolve problems that are caused by inconsistent forwarding paths for packets in two directions of a same service flow in an equal-cost multi-path scenario. A first network device performs calculation on characteristic information in a packet using a hash algorithm to obtain a hash value, determines, according to a correspondence between hash values and path identifiers that is acquired in advance, a path identifier corresponding to the hash value, and forwards the packet to a second network device through a path that corresponds to the path identifier, where the path is one of the N equal-cost paths. There exist N equal-cost paths for packet forwarding between the first network device and the second network device. The same hash algorithm is configured on the two network devices respectively.

Method for packet forwarding based on equal-cost multi-path and network device

A Transparent Interconnection of Lots of Links (TRILL) network establishing method, node, and system. The TRILL network establishing method includes: receiving, by a first node, a Link Layer Discovery Protocol (LLDP) packet, where an optional type-length-value (TLV) field of the LLDP packet includes TRILL capability information of a second node that sends the LLDP packet; and if it is determined, according to the TRILL capability information, that the second node has a TRILL capability, and the first node itself also has the TRILL capability, configuring, by the first node, a port, through which the LLDP packet is received, of the first node, to have a TRILL function enabled. The node in embodiments of the present invention can automatically enable or disable the TRILL function, so as to implement automatic establishment of a TRILL network.

TRILL network establishing method, node, and system

The present application discloses a packet forwarding method and apparatus. An access device receives a first packet, where the first packet is an Ethernet packet, searches an equal-cost multi-path forwarding entry for a matched equal-cost path according to a destination MAC address of the Ethernet packet, where the equal-cost multi-path forwarding entry includes: a virtual MAC address corresponding to a gateway aggregation group, an identifier of each gateway device in the gateway aggregation group, and an outbound interface corresponding to the identifier of each gateway device, where the identifier is used to uniquely identify a gateway device in a large layer 2 network; and if N matched equal-cost paths are found, encapsulates the first packet into a second packet according to a first path in the N matched equal-cost paths, and forwards the second packet according to an outbound interface of the first path.

Packet forwarding method and apparatus

A method for sending a multicast packet and a switch. A first switch receives a multicast packet from a first customer edge or a second customer edge, where the first customer edge is connected to the first switch in a single-homed manner, and the second customer edge is connected, in an all-active manner, to N switches that include the first switch; the first switch determines a specified multicast tree of the first switch; the first switch encapsulate the multicast packet, where a destination switch unique identification address in a header of the encapsulated multicast packet is a unique identification address of a root of the specified multicast tree of the first switch; and the first switch forwards the encapsulated multicast packet to a network side using the specified multicast tree of the first switch.

Method for sending multicast packet and switch

A port number extension method and a switch are provided. A first switch determines bits for identifying the first switch in a Media Access Control (MAC) address in an identifier (ID) of a specified bridge; calculates a bit for port number extension according to the bits for identifying the first switch; and combines the bit for port number extension and original bits for specifying a port, to obtain new bits for specifying a port. In this way, a problem that Spanning Tree Protocol (STP) port numbers are insufficient in a super virtual fabric with a massive quantity of ports is resolved.

Port number extension method and switch

A gateway receives a link state packet (LSP) that includes a network identifier of a Layer 2 virtual network and a multicast address and that is sent by each routing bridge (RB) that is on the Transparent Interconnection of Lots of Links (TRILL) network; separately performs calculation on the network identifier and the multicast address that are in each LSP, to obtain a calculation result corresponding to each combination of the network identifier and the multicast address; if the gateway determines that information preconfigured on the gateway matches a calculation result corresponding to a combination of the network identifier and the multicast address, sends a notification message including the network identifier and the multicast address that are in the matched combination to each RB; receives from at least one RB, a multicast packet corresponding to the multicast address in the matched combination, and forwards the multicast packet.

Method, device, and system for transmitting multicast packet across layer 2 virtual network

Embodiments of the present disclosure provide a method, system and network node for auto-configuration, and a network node. A network node in a BVLAN receives IS-IS protocol packets sent by other network nodes in the BVLAN; determines its own priority in the BVLAN; transmits uniform configuration information in the BVLAN according to its own priority, where the uniform configuration information is information that needs to be configured on each network node in the BVLAN. In the embodiments of the present disclosure, auto-configuration may be performed on the network node, thereby improving a speed and accuracy of configuration.

Growing community of inventors

Nanjing, China

Guangrui Wu