Re: [rbridge] Query Reg: RBridges: The ESADI Protocol

[Donald Eastlake <[e-mail]>]

Hi Abhinav,

On Mon, Feb 6, 2012 at 6:20 AM, Abhinav Bhatia <[e-mail]> wrote:
> Hi,
>
> I have queries related to esadi protocol draft
> <draft-hu-trill-rbridge-esadi-01.txt>.
>
> 1) In the draft : "In this state, the Holding Timer will be recycled if the
> timer is expired or the found neighbor has a higher priority than the local
> priority."
>
>      I could not understand the above line, i think it should  something
> like: "In this state,  the Holding Timer will be recycled every time an lsp
> is received with higher priority"

Note that this is not yet a WG draft...  As currently described, the
ESADI Holding Timer has to recycle to cause the repeated transmission
of ESADI-LSP number zero until a neighbor is found. Perhaps that
mechanism should be replaced by a VLAN scoped flag bit in the core
TRILL IS-IS instance.

> 2) ESADI will only help in fast updates of end station  addresses, It will
> not help in the initial learning of macs by RBrides the encapsulation and
> decapitation.

Yes, leaning from ESADI and learning from the data plane are different
and ESADI does not affect learning from the data plane. I assume data
plane learning is what you refer to as "encapsulation and
decapsulation" -- but it isn't exactly "encapsulation". It is actually
from the receipt of any Ethernet frame with a unicast source address.
However, if other RBridges are participating in ESADI for VLAN-x then,
when an RBridge starts participating in ESADI for VLAN-x, it will
fairly soon get updates with such MAC attachment information for
VLAN-x as other RBridges choose to include in ESADI.

Thanks,
Donald
=============================
 Donald E. Eastlake 3rd   [phone] (cell)
 155 Beaver Street, Milford, MA 01757 USA
 [e-mail]

> Please correct me if i am wrong.
>
> Thanks and Regards,
> Abhinav
>
> _______________________________________________
> rbridge mailing list
> [e-mail]
> http://mailman.postel.org/mailman/listinfo/rbridge
>

_______________________________________________
rbridge mailing list
[e-mail]
http://mailman.postel.org/mailman/listinfo/rbridge