Cell Relay Archive

["ronald h. davis" <ronaldd@lucent.com>]

rakesh bahl wrote:
> 
> 1)Quoting LANE v2 spec:
>  "Communication between emulated LANs require some type of
> interconnection devices(bridge,router,etc),even though direct ATM
> connections between emulated LANs are explicitly allowed in some
> circumstances."
> The spec goes on to state that such inter-ELAN connections are outside
> its scope.
> This (quote) surprises me as (as far as I know) an emulated LAN is a
> Virtual LAN which could be connected to another ELAN by a router(or a
> Layer 3 Switch or a gateway) only,and not through a bridge or even
> directly.
> 

an emulated lan can be implemented as a virtual lan as you suggest, but
if you have multiple emulated lans then you have multiple virtual lans
and separate lans are interconnected through a router.

as far as inter-elan connection being beyond the scope of lane:  since
lane is, after all, concerned about a given lan it is a layer 2
oriented protocol.  interconnecting lan's is a layer 3 matter so it
makes sense for the lane authors to declare layer 3 issues as being
beyond the scope of the lane document.  where you would see the issue
that you raised addressed is in the mpoa document.

-- 
  __  ______  __  / __/ |       lucent technologies, naperville il, usa
_/ (_(_) / (_(_/_/_(_/  .       ronald.h.davis@lucent.com
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