ODR requires cdp to be enabled on connected interface between hub and spokes. the hub need to have "router odr" command that's all we require to configure odr. Hub router will send a default route to all spokes while spokes will send their connected prefixes to Hub.
We need to enable cdp on virtual-template if PPPoFR is running, in this case it does matter whether cdp is enabled on physical interface or not. But if cdp is enable on both physical interface and virtual template, the hub will have two routes installed for same destination one via virtual -access and other via physical interface. Though this does not make any difference whether two routes are install or just one because ultimately even virtual-access is also using physical interface for packet forwarding. And obviously spokes will have a default route advertise by hub.
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