Nov 18 2008
MPLS VPN – using Site of Origin (SOO)
When an MPLS VPN customer is dual homed, SOO can be used to prevent routing loops as well as sub optimal routing.
Toplology as below.
Using Site of Origin community with BGP
I’ve used EIGRP between CE1 and CE3 to demonstrate the sub optimal routing.(its only suboptimal if you want to route traffic between sites using the backdoor link, which isnt always the case)
