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Webcast-Catalyst9k
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Frame Relay Point-to-Point Subinterface

On a frame relay point to point subinterface with another point-to-point interface, I've read that inverse arp is not "needed". All is needed is the frame-relay interface-dlci command to identify the dlci to subinterface relationship. If this is true, how does the frame relay router learn the address of the remote end? I would assume it would need it to address the destination for the packet.

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Re: Frame Relay Point-to-Point Subinterface

Quoting from Cisco Press Documents

"On point-to-point subinterfaces, you do not need to use the frame-relay map command to perform static address mapping, because it is always assumed that the end point of the point-to-point connection automatically resides on the same subnet as the start point. It is also not required to enable or disable Inverse ARP, because there is only a single remote destination on a point-to-point PVC and discovery is not necessary."

Link Reference

http://www.ciscopress.com/articles/article.asp?p=170741&seqNum=6&rl=1

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