For the artical, will summary how to mpls over gre on NCS5500, NCS5500 only enable decap mode of GRE(6.1.x support the feature), that feature will flexible terminal GRE session that from DC servers. Btw, in order to verify packets from the tester, will capture packets by ERSPAN on NCS55A1.
- NCS55A1-2 learn eBGP route 188.8.131.52/24 from tester 5/2
- Ony IPv4/IGP forwarding from Terster 5/1 -> 55A1-1 -> 55A1-2
- Send traffics(GRE + EPE ) from tester 5/1, and terminate at NCS55A1-2, then forward to EPE link