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Here is Junos Documentation on an OSPF Sham link.
I understand what a Sham link does.
But the documentation references an OSPF backdoor link between L3VPN customer sites. What exactly is a backdoor link? Is it a physical connection between sites? That would seem unlikely since the sites are geographically distant (hence the use of an L3VPN to interconnect them).
Can anyone describe how a backdoor link is implemented?
Juniper Business Use Only
Thanks for the reply Steve.
Do you know what makes this backdoor link less preferred than connectivity via the L3VPN ?