Step 3 R2 processes the incoming frame and forwards the packet to R3R2

repeats the same general process as R1 when it receives the HDLC frame. After stripping the HDLC header and trailer, R2 also needs to find the routing table entry that matches destination 150.150.4.10. R2's routing table has an entry for 150.150.4.0, outgoing interface serial1, to next-hop router 150.150.3.1, which is R3.

Before R2 can complete the task, the correct DLCI for the VC to R3 must be decided. The details of how R2 knows the right DLCI are covered in Chapter 11, "Frame Relay," of the CCNA ICND Exam Certification Guide. With that mapping information, R2 can complete the Frame Relay header and send the frame to R3.

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