Point-to-point topology

[jdjefferson60372]

Hi,

My question is: Why is point-to-point topology configured in loopback? Is it because of the fact that loopback never goes down unless it is manually shut down or if the router crashes, or, is there/are there another explanation(s).

Thanks,

joe.

[balaji.bandi]

Most case Loopback never go down- also if you have alternative path outside, this will able to take advantage of this.

But again, what IGP and EGP you running very important.

[jdjefferson60372]

Not running a protocol, just doing an online course. Needed some additional info.

Thanks Again,

joe.

[Seb Rupik]

Hi there,

Keep in mind that using a loopback is only useful when you have more than one WAN link. In the event of a WAN link failure the topology should reconverge to find a alternative path to the loopback.

In a topology with just one link it makes sense to create the peering with the WAN interface IP.

cheers,

Seb.

[jdjefferson60372]

Thanks.