Layer 2 addressing over point to point links

superman100superman100 Member Posts: 8 ■□□□□□□□□□
in CCNA & CCENT
I am a little confused in regards to mac addressesing over point to point links. I understand layer 2 addressing is not used over PPP or HDLC unless Frame relay is used then the DLCI address (L2) comes into play. For PPP and HDLC does that meanONLY Ip addressing is used and encapsulated by the the layer 2 PPP or HDLC protocol. Please see example below

router A (PPP)
point to point
router B (PPP)

Would this mean when router A talks to router B only the ip address is used?

Thanks for your help
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Comments

  • TitinhoTitinho Member Posts: 15 ■□□□□□□□□□
    It uses the IP address when the communication depends on a layer 3 address, for example Cisco discovery protocol does not use IP address to communicate between devices because is a layer 2 protocol
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  • chXchX Member Posts: 100 ■■■□□□□□□□
    PPP uses the broadcast address for its layer 2 addressing. Since there's only two nodes on a point-to-point link, there's no need to assign individual layer 2 addresses.
    2019 Goals:
    [ ] Recertify CCNA
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