Configuring a PBB-EVPN Instance

Provider edges (PEs) use provider backbone bridge Ethernet VPN (PBB-EVPN) instances to interconnect private networks with the public network.

Context

A B-EVPN instance connects to the public network and manages EVPN routes received from other PEs. An I-EVPN instance connects to a private network through a PE interface connecting to a CE. After an I-EVPN instance receives a data packet from a CE, the I-EVPN instance encapsulates a PBB header into the packet.

Procedure

Configure a B-EVPN instance.
1. Run system-view
  The system view is displayed.
2. Run evpn vpn-instance vpn-instance-name b-evpn
  A B-EVPN instance is created, and its view is displayed.
3. (Optional) Run description description-information
  A description is configured for the B-EVPN instance.
  
  Similar to a host name or an interface description, a B-EVPN instance description helps you memorize the B-EVPN instance.
4. Run route-distinguisher route-distinguisher
  A route distinguisher (RD) is configured for the B-EVPN instance.
  
  A B-EVPN instance takes effect only after the RD is configured. The RDs of different B-EVPN instances on a PE must be different.
  
  After being configured, an RD cannot be modified, but can be deleted. After you delete the RD of a B-EVPN instance, the VPN targets of the B-EVPN instance will also be deleted.
5. Run vpn-target vpn-target &<1-8> [ both | export-extcommunity | import-extcommunity ]
  VPN targets are configured for the B-EVPN instance.
  
  A VPN target is a BGP extended community attribute used to control the receiving and advertisement of EVPN routes. A maximum of eight VPN targets can be configured using a vpn-target command. To configure more VPN targets for an EVPN instance address family, run the vpn-target command several times.
6. (Optional) Run tnl-policy policy-name
  The B-EVPN instance is associated with a tunnel policy.
  
  This configuration enables PEs to use TE tunnels to transmit data packets. Currently, B-EVPN instances can be associated with tunnel binding policies only.
7. Run commit
  The configuration is committed.
Configure an I-EVPN instance.
1. Run system-view
  The system view is displayed.
2. Run evpn vpn-instance vpn-instance-name i-evpn
  An I-EVPN instance is created, and its view is displayed.
3. (Optional) Run description description-information
  A description is configured for the I-EVPN instance.
  
  Similar to a host name or an interface description, an I-EVPN instance description helps you memorize the I-EVPN instance.
4. Run pbb i-tag i-tag
  A service instance identifier (I-SID) is configured for the I-EVPN instance.
  
  After being configured, an I-SID cannot be modified, but can be deleted. After you delete the I-SID of an I-EVPN instance, the binding between this I-EVPN instance and a B-EVPN instance will also be deleted.
5. Run pbb binding b-evpn vpn-instance-name
  The I-EVPN instance is bound to the B-EVPN instance.
6. Run commit
  The configuration is committed.