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Feature Description - VPN 01

NE05E and NE08E V300R003C10SPC500

This is NE05E and NE08E V300R003C10SPC500 Feature Description - VPN
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Seamless Migration of VPLS to EVPN

Seamless Migration of VPLS to EVPN

To convert each VPLS PE on a network into an EVPN device, you can configure the seamless migration of VPLS to EVPN function, which does not interrupt services during network running.

On the network shown in Figure 10-39, seamless migration of VPLS to EVPN involves the following process:
  1. After EVPN is enabled on PE1, PE1 starts to advertise inclusive multicast routes to the other PEs. Because PE1 does not receive any inclusive multicast routes from the other PEs, traffic between PE1 and the other PEs continues to be forwarded through VPLS connections.

  2. When EVPN continues to be enabled on another PE, for example PE2, PE2 starts to send inclusive multicast routes to the remaining EVPN-disabled PEs.

  3. After PE1 and PE2 receive inclusive multicast routes from each other, they discover each other and disable the VPLS connection between them. The service between PE1 and PE2 is carried through an EVPN. Simultaneously, services between PE1/PE2 and the other PEs remain carried through the VPLS connections.

  4. The preceding process continues on the EVPN-incapable PEs one after another, implementing seamless migration of VPLS to EVPN.

Figure 10-39 Seamless migration of VPLS to EVPN
Updated: 2019-01-14

Document ID: EDOC1100058940

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