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Vaibhava Varma
Enthusiast

IOS-XR_ASR9k_H-VPLS_with_MPLS_Access_Split_Horizon_Issue !

Dear All

I am working on a requirement to create a H-VPLS Setup with MPLS Access but am unable to get the setup working as the NPE is not able to send traffic received from other NPEs to the MPLS Access PW due to the Split-Horizon group being enabled by default for PW of same VFI.

After doing a lot of reading and digging am still unable to explore the option to disable split-horizon between the PWs of the same VFI. In IOS-XR I can not get anything equivalent to "neighbor 192.168.0.2 encapsulation mpls no-split-horizon" which I have configured at NPE3 to achieve communication between CE2 & CE4

Any pointers regarding this.Below is the setup for reference whereby I need a mechanism on IOS-XR to disable Split-Horizon check between the MPLS Access PW and other PW of the same VFI under the VPLS.

                                    CE1----------AC-------------NPE1(ASR9k)

                                                                               !

                                                                               !

                                                                          xconnect

                                                                               !

                                                                               !

                                                                            VPLS          

                                                                               !          

                                                                               !

                                                                            NPE2(ASR9k)-----------------VPLS------------NPE3(IOS)--AC--CE3

                                                                                !                                                              !

                                                                                !                                                              !

                                                                              AC                                                            !                                                        

                                                                                !                                                              !

                                                                             CE2                                                           !            

                                                                                                                                  -         VPLS-----NPE4(IOS)---AC---CE4

NOTE:

1.CE2 can reach CE1,CE3,CE4

2.CE3 can reach CE2,CE4 but not CE1

3.CE4 can reach CE2,CE3 but not CE1

Regards

Vaibhava Varma

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