Perform the following steps to solve this problem:
Ensure that the vpn-instance-capability simple command is not run on the Provider Edge (PE) router at either end. Check that domain identifiers are configured on both PEs and that at least one domain identifier (level-2 identifier or level-1 identifier) matches the identifier of the other router. Check whether the Border Gateway Protocol (BGP) neighbor relationship is established. Check whether the BGP route is correct.
Notice: To protect the legitimate rights and interests of you, the community, and third parties, do not release content that may bring legal risks to all parties, including but are not limited to the following:
Politically sensitive content
Content concerning pornography, gambling, and drug abuse
Content that may disclose or infringe upon others ' commercial secrets, intellectual properties, including trade marks, copyrights, and patents, and personal privacy
Do not share your account and password with others. All operations performed using your account will be regarded as your own actions and all consequences arising therefrom will be borne by you. For details, see " User Agreement."