HDLC vs PPP MULTILINK

[h.ugwuadu]

I want a point to point link from my headquarters to a branch office. Between HDLC and PPP multilink which one is preferable? I will like to use the one with less overhead on my router.

[prafuljaded]

HDLC has a lesser overhead compared to PPP.In case you want to combine two links using HDLC in future(Multilink) you can use "ip load-sharing per-packet" interface command which does almost same like PPP.

[tbaranski]

My understanding is that HDLC and PPP packet overhead on Cisco devices are about the same, and that PPP having more overhead is a common misconception. I haven't studied the packet formats, so I can't say for sure.

That being said, I'd probably go with HDLC as it is the default and therefore requires no configuration.

[prafuljaded]

Yes,PPP will be effective on ISDN,dialup lines wherein you require Layer 2 protocols for authentication(PAP, CHAP) , Layer 3 parameters ( IP) are to be negotiated.

[h.ugwuadu]

Thanks, I do not have plans of using ISDN, dialup or any authentication (PAP, CHAP). does mean that it will be better to use HDLC?.

[h.ugwuadu]

Thanks, I do not have plans of using ISDN, dialup or any authentication (PAP, CHAP). does mean that it will be better to use HDLC?.

[allan.wells · Accepted solution]

Yes,

If you are using Cisco devices end to end.

Allan