Communication method, device, and system
AssigneeHuawei Technologies Co., Ltd.
InventorsBingshe Liu, Chongyang Hu
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Abstract
According to a communication method, a local device and a peer device notify each other through a border gateway protocol (BGP) message whether the local device and the peer device have a control word processing capability. When the peer device also has a control word processing capability, the peer device uses a service packet to carry a control word. When the local device has no control word processing capability, no control word is carried when the peer device sends a service packet to the local device.
Claims14
A first network device, comprising:
- one or more processors;
- and
- a memory coupled to the one or more processors and configured to store instructions that, when executed by the one or more processors, cause the first network device to be configured to:
- receive a first border gateway protocol (BGP) message from a second network device, wherein the first BGP message comprises an extended community attribute indicating that the second network device has a control word processing capability;
- obtain a first Ethernet virtual private network (EVPN) service packet, wherein the first EVPN service packet comprises control word indication information and a control word, and wherein the control word indication information indicates that the first EVPN service packet comprises the control word;
- and
- send the first EVPN service packet to a second network device.
A second network device, comprising:
- one or more processors;
- and
- a memory coupled to the one or more processors and configured to store instructions that, when executed by the one or more processors, cause the second network device to be configured to:
- generate a border gateway protocol (BGP) message, wherein the BGP message comprises information indicating the second network device has control word processing capability, wherein the BGP message comprises an extended community attribute carrying the information;
- and
- send the BGP message to a first network device.
A communication system, comprising:
- a first network device comprising:
- one or more first processors;
- and
- a first memory coupled to the one or more first processors and configured to store first instructions that, when executed by the one or more first processors, cause the first network device to be configured to send a border gateway protocol (BGP) message, wherein the BGP message comprises an extended community attribute carrying information indicating the first network device has control word processing capability;
- a second network device, comprising:
- one or more second processors;
- and
- a second memory coupled to the one or more second processors and configured to store second instructions that, when executed by the one or more second processors, cause the second network device to be configured to:
- receive the BGP message from the first network device;
- and
- send a first Ethernet virtual private network (EVPN) service packet, wherein the first EVPN service packet comprises control word indication information and a control word, and wherein the control word indication information indicates that the first EVPN service packet comprises the control word.
Dependencies are inferred from the claim text.