Re: ABR/ASBR with clear R-bit?

Hi Tanmoy,

I think we can say that behavior may be adjusted based on configuration, and
thus allow both scenarios to be handled appropriately. 

More inline...

------ Original Message ------
Received: Thu, 05 Jul 2012 11:17:46 PM PDT
From: Tanmoy <tanmoy.kundu <at> huawei.com>
To: "'Michael Barnes'" <michael_barnes <at> usa.net>, <ospf <at> ietf.org>
Subject: RE: [OSPF] ABR/ASBR with clear R-bit?

> Hi Michael, 
> As I understand the Motivation behind using R-Bit in router LSA in
> Multi-homed Hosts which just want to learn the routes by participating in
> routing but do not want to forward any transit traffic.

In this case, the device should not be either ABR or ASBR, so the problem and
would only need to advertise its own host address(es).

> However I also support your idea to use the R-bit as "... edge router with
> hosts attached, and the router is dual homed ...".  
> 
> But the question is How a router can determine whether the interface is
just
> connected to only Hosts not any other router ?
> 
> Lets consider the below topology where RTA and RTB are the router which is
> connected to IP network and H2-Hn are the host from a trusted/enterprise