A sanitation department attaches a partner agency VRF that needs rich routing policy at the edge. Which PE-CE protocol is the usual fit?
Select an answer to reveal the explanation.
Short Explanation
When the partner needs communities, filters, and scalable route exchange, eBGP on the PE-CE link is the usual adult choice. Statics work for tiny stubs; LDP isn’t a PE-CE routing protocol. Policy-rich attachments love BGP.
Full Explanation
eBGP is widely used as the PE-CE protocol when attachments require rich routing policy, scalability, and clear administrative boundaries. BGP runs within the VRF context on the PE toward the CE. IS-IS on P-core links and LDP sessions to the CE address underlay or label distribution concerns, not the typical policy-rich PE-CE routing choice, and BGP is not forbidden inside VRFs.