Multilink PPP differences

Hello,

I am wonder what the difference between the two configurations below are. It seems there are two ways to configure MLPPP. Either using a multilink interface or a virtual template. One uses an unnumbered IP and one uses a /30 for the multilink interface. I see in the QOS config guids that you use option #2 for MLPPP interleave.

Which option is best practice for normal circumstances?

****Configuration #1**** multilink virtual-template 1 ! interface Virtual-Template1 ip unnumbered Loopback0 ppp authentication chap ppp multilink ! interface Serial0/0/0:1 no ip address encapsulation ppp no fair-queue ppp multilink ! interface Serial0/0/1:1 no ip address encapsulation ppp no fair-queue ppp multilink

****Configuration #2**** interface Multilink1 ip address 10.xxx.xxx.xxx 255.xxx.xxx.xxx ppp multilink ppp multilink group 1 ! interface Serial0/0/0 no ip address ppp multilink ppp multilink group 1 encapsulation ppp no fair-queue ! interface Serial0/1/0 no ip address ppp multilink ppp multilink group 1 encapsulation ppp no fair-queue

Reply to
mikenipp
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Since Multilink is statically configured, it's well suitable for leased-line style connections. Virtual-Template is normally used in dial-like environments on provider side where you have many users that need to share similar configuration and you don't want to (or simply can't) configure each user link individually. You can use PPP LFI with either of this approaches. Also none of this scenarios forces you to only one addressing strategy - you can use /30 with Virtual-Template (we do for some users) and you can use unnumbered for Multilink interface.

Kind regards, iLya

Reply to
Charlie Root

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