A message forwarding method and leaf node device
A node device and message forwarding technology, applied in the field of communication, can solve the problem that the specifications of leaf node routing table items and hardware table items are not enough to carry host routing
Active Publication Date: 2020-01-03
NEW H3C TECH CO LTD
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[0005] In view of this, this application provides a message forwarding method and a leaf node device to solve the problem that the routing table item specification and hardware table item specification of the leaf node are not enough to carry the entire data when the distributed gateway is deployed in the data center. All host routing problems inside the center
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[0020] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.
[0021] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...
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The present application provides a message forwarding method and a leaf node device. The method can be applied to any leaf node in a data center including a backbone node and a leaf node, and any leaf node establishes a BGP neighbor with each backbone node. A leaf node performs the following method: Synchronize the network segment route and host route to the backbone node; learn the network segment route synchronized by the backbone node; when the first message hits the network segment route, send the first message to the hit network segment route The backbone node corresponding to the next hop of the route, so that the backbone node sends the first packet to the leaf node corresponding to the next hop of the hit host route. Since the number of network segment routes in the data center is far less than the number of host routes, the carrying capacity of the routing table entries and hardware table items on the leaf nodes can meet the small number of network segment routes in the data center, thus solving the problem of leaf node routing. The issue that the entry specification and hardware entry specification are limited.
Description
technical field [0001] The present application relates to the technical field of communications, and in particular to a message forwarding method and a leaf node device. Background technique [0002] At present, the data center has generally adopted the networking mode of "spine node + leaf node", and the leaf node is responsible for connecting to the host. [0003] In one way, the data center can adopt a distributed gateway deployment method, that is, each Leaf node is a distributed gateway, so that the Leaf node can not only provide Layer 2 access, but also serve as an IP (Internet Protocol, Internet Protocol ) gateway, providing forwarding across network segments. In the distributed gateway deployment mode, each Leaf node needs to publish the MAC (Medium Access Control, Media Access Control) address and IP address of the locally online host (which can be a physical machine or a virtual machine) as a route to the Other Leaf nodes, after receiving it, other Leaf nodes wil...
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IPC IPC(8): H04L12/721H04L12/751H04L45/02H04L45/24
CPCH04L45/08H04L45/44H04L45/22H04L45/033H04L45/48H04L47/125H04L49/1515H04L49/25H04L45/50H04L45/02H04L45/72
Inventor 李昊
Owner NEW H3C TECH CO LTD