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

.



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