[ih] Exterior Gateway Protocol

[Grant Taylor]

On 9/4/20 3:43 PM, Tony Li via Internet-history wrote:
> True, but no one would run it that way.

You might not think it, but I know for a fact that multiple people do 
run iBGP between two adjacent routers on the link-net IPs.  (Think 
serial interfaces between two offices that are part of a larger single AS.)

> That makes both of those interfaces into single points of failure.

Agreed.

> If you run it between loopbacks, then any path suffices.

But if the WAN link is also the SPOF that can't be avoided, then using 
loopback IPs just means additional complexity.

> This was also effectively the early driver for multi-hop EBGP: 
> pre-LAG link groups.

*nod*



-- 
Grant. . . .
unix || die