[rbridge] Ingress Rbridge address and BCN

[Wadekar, Manoj K]

Yes, for large clusters, if cores do not maintain addresses of all the
end-stations in whole cluster - then only way to get BCN back to ES, is
to send them to ingress rbridge-address and then have that ingress
rbridge forward BCN to end station with appropriate ES address.

If so, ingress rbdridge address seems to be requirement to me.

Thanks,
- Manoj

-----Original Message-----
From: Silvano Gai [mailto:sgai at nuovasystems.com] 
Sent: Friday, October 27, 2006 8:00 AM
To: Radia.Perlman at sun.com; Wadekar, Manoj K
Cc: rbridge at postel.org
Subject: RE: [rbridge] Ingress Rbridge address and BCN


If the congestion is detected in the core of the TRILL network, how do
you signal back to the source host if you don't know which is the
ingresss RBridge? 

You cannot look-up the inner MAC address, because in the core of the
network you don't keep the inner MAC addresses in the table. Correct?

This is a clear reason while you need the ingress RBridge address.

-- Silvano

> -----Original Message-----
> From: rbridge-bounces at postel.org [mailto:rbridge-bounces at postel.org]
On
> Behalf Of Radia.Perlman at sun.com
> Sent: Thursday, October 26, 2006 5:02 PM
> To: Wadekar, Manoj K
> Cc: rbridge at postel.org
> Subject: Re: [rbridge] Ingress Rbridge address and BCN
> 
> Hi Manoj,
> 
> I'm confused about BCN. Wouldn't congestion notification need to go to
the
> original endnode source,
> and not the ingress RBridge?
> 
> Radia
>