Communication between multiple VPN Sites

[yuening liao]

Hello,

i used 3 CEs and 2 PEs, build a hub and spoke MPLS VPN topology as follow, two the overlapped addresses 100.100.100.100 reside separately in VPN1 of R1 and VPN2 of R2. But traffic initiated by 100.100.100.100 from VPN1 toward VPN3 was always redirected through R5 to VPN2. Is there any solution of this issue?

thanks!

[mlund]

Hi

You can not have overlapping addresses in a scenario like this, where You are leaking between vpn:s.

When traffic is arrived towards 100.100.100.100 on r4 et0/0 there are no way for r4 to know wich of the 2 (r1 or r2) that the traffic is intended to go.

/Mikael

[yuening liao]

Hi Mikael,

Thanks for your answer.