Cluster communictaion

• US 10,644,991 B2
• Filed: 09/30/2016
• Issued: 05/05/2020
• Est. Priority Date: 09/30/2015
• Status: Active Grant

• Current Assignee: New H3C Technologies Co., Ltd. (Hewlett-Packard Enterprise Company)
• Original Assignee: New H3C Technologies Co., Ltd. (Hewlett-Packard Enterprise Company)
• Inventors: Li, Sijie, Jiang, Xi, Bu, Jianbin
• Primary Examiner(s): Huq, Obaidul
• Application Number:
  US15/745,884
• Publication Number:
  US 20180198702A1
• Time in Patent Office: 1,313 Days
• Field of Search: 370216, 370217, 370218
• CPC Class Codes: H04L 45/02 Topology update or discovery
• CPC Class Codes: H04L 45/025 Updating only a limited number of routers, e.g. fish-eye update
• CPC Class Codes: H04L 45/22 Alternate routing
• CPC Class Codes: H04L 45/28 using route fault recovery
• CPC Class Codes: H04L 45/46 Cluster building
• CPC Class Codes: H04L 49/252 Store and forward routing

Abstract

The server may be configured with two or more than two network cards. The server may advertise a route, which may comprise a network segment address of each local network card and an IP address of the server, to a route neighbor of the server via the each local network card. The server may receive route information, which may comprise an address of a device, from the route neighbor of the server via the each network card. The server may determine a route from the server to the device. An outgoing port of the route may be the each network card. When a packet destined for the address of the device is received, the server may forward the packet via the route. When a link connecting to a network card fails, the server may disable all the routes, outgoing interfaces of which may be the network card.

Claims

1. A method for implementing a cluster, applied to a server in a cluster, wherein the server is configured with two or more than two network cards, the method comprises:

advertising a route, which comprises a network segment address of each local network card and an IP address of the server, to a route neighbor of the server via the each local network card;

receiving route information, which comprises an address of a device, from the route neighbor of the server via the each network card, determining a route from the server to the device, wherein an outgoing port of the route is the each network card, the address of the device comprises;

an IP address of a client or an IP address of another server in the cluster;

when a packet destined for the address of the device is received, forwarding the packet via the route from the server to the address of the device;

when a link connecting to a network card fails, disabling all routes, outgoing interfaces of which are the network card.

2. The method according to claim 1, wherein the IP address of the server has a Loopback interface attribute.

3. The method according to claim 1, wherein different network cards on the server connect to different route switch devices, and IP addresses of different network cards on the server belong to different network segments.

4. The method according to claim 1, wherein advertising the route, which comprises the network segment address of the each local network card and the IP address of the server, to the route neighbor via the each local network card comprises:

establishing a BGP neighbor connection between the each network card and a route switch device connecting to the each network card;

advertising a network segment route of the each network card and a route of the IP address of the server to a BGP neighbor of the each network card;

wherein

a next hop of the network segment route of the each network card is a network card IP address of the each network card and a next hop of the route of the IP address of the server is the network card IP address of the each network card.

5. The method according to claim 4, wherein receiving the route information, which comprises the address of the device, from the route neighbor of the server via the each network card comprises:

receiving a BGP route advertised by the BGP neighbor of the each network card.

6. The method according to claim 1, wherein advertising the route, which comprises the network segment address of the each local network card and the IP address of the server, to the route neighbor via the each local network card comprises:

establishing an OSPF neighbor connection from the each network card to a route switch device connecting to the each network card;

advertising a network segment route of the each network card and a route of the IP address of the server to an OSPF neighbor;

wherein

a next hop of the network segment route of the each network card is a network card IP address of the each network card and a next hop of the route of the IP address of the server is the network card IP address of the each network card.

7. The method according to claim 6, wherein receiving the route information, which comprises the address of the device, from the route neighbor of the server via the each network card comprises:

receiving a route advertised by the OSPF neighbor connecting to the each network card.

8. The method according to claim 1, wherein disabling all the routes, the outgoing interfaces of which are the each network card, comprises:

deleting all the routes, the outgoing interfaces of which are the each network card and deleting all route information received via the each network card.

9. A server, applied to a server in a cluster, wherein the server is configured with two or more than two network cards and the server comprises:

a processor and a non-transitory storage medium storing machine-readable instructions, which are executed by the processor to

advertise a route, which comprises a network segment address of each local network card and an IP address of the server, to a route neighbor of the server via the each local network card;

receive route information, which comprises an address of a device, from the route neighbor of the server via the each network card, determine a route from the server to the device, wherein an outgoing port of the route is the each network card, the address of the device comprises;

an IP address of a client or an IP address of another server in the cluster;

when a packet destined for the address of the device is received, forward the packet via the route from the server to the address of the device;

when a link connecting to a network card fails, disable all routes, outgoing interfaces of which are the network card.

10. The server according to claim 9, wherein the IP address of the server has a Loopback interface attribute, different network cards on the server connect to different route switch devices, and IP addresses of different network cards on the server belong to different network segments.

11. The server according to claim 9, wherein the machine-readable instructions are executed by the processor to:

establish a BGP neighbor connection between the each network card and a route switch device connecting to the each network card;

advertise a network segment route of the each network card and a route of the IP address of the server to a BGP neighbor of the each network card;

wherein

a next hop of the network segment route of the each network card is a network card IP address of the each network card and a next hop of the route of the IP address of the server is the network card IP address of the each network card.

12. The server according to claim 11, wherein the machine-readable instructions are executed by the processor to:

receive a BGP route advertised by the BGP neighbor of the each network card.

13. The server according to claim 9, wherein the machine-readable instructions are executed by the processor to:

establish an OSPF neighbor connection from the each network card to a route switch device connecting to the each network card;

advertise a network segment route of the each network card and a route of the IP address of the server to an OSPF neighbor, wherein

a next hop of the network segment route of the each network card is a network card IP address of the each network card and a next hop of the route of the IP address of the server is the network card IP address of the each network card.

14. The server according to claim 13, wherein the machine-readable instructions are executed by the processor to:

receive a route advertised by the OSPF neighbor connecting to the each network card.

15. The server according to claim 9, wherein the machine-readable instructions are executed by the processor to:

set invalid tags for all the routes, the outgoing interfaces of which are the each network card, and set invalid tags for all route information received via the each network card.