if I am not wrong for some routing protocols like ospf
it needs a always up interface like a loopback
interface . Also for BGP peering with a loopback
interface makes tcp connection more reliable
suaveguru
--- whitaker <[EMAIL PROTECTED]> wrote:
> Could someone explain the importance of using
> loopback interfaces? I keep
> reading that it is important when using routing
> protocols to use loopback
> interfaces. A consultant that is writing
> documentation for me suggested I
> obtain an entire class C network just for loopback
> addresses. Cisco says
> when configuring BGP that, "We recommend you use a
> loopback interface to
> guarantee reachability in networks with multiple
> paths." (from
> http://www.cisco.com/warp/public/459/23.html#3).
>
> Maybe I'm missing something totally obvious here,
> but exactly what benefit
> do I gain from using loopback addresses? I know it
> is supposed to provide
> reliability for routing protocols, but how?
>
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