[rbridge] Configuration of VLANs vs selfconfiguration

[Joe Touch]

Rbridges are supposed to work like bridges:

	- zero configuration for a single LAN
	- as easy (or hard) to configure for VLANs

They are not intended to be zero-config VLAN systems any more than
bridges are.

Joe

Guillermo Ibáñez wrote:
> 
> G. Ibáñez wrote:
> 
> I have a doubt since some time on VLAN configuration. One of the main 
> aspects driving the routing bridges proposal is to be configuration 
> free, like the transparent bridges, opposite to using  routers where IP 
> addresses must be  asigned, administered and may change when the host 
> moves in the network. However, VLAN configuration of bridges is an 
> important aspect and effort, that prevents selfconfiguration of rbridges 
> to be achieved. In the Rbridges draft (see extract below), this problem 
> is skipped assuming the Rbridges are already configured with the 
> information on which VLANs should be supported on which port.
> Although the problem of VLAN configuration is complex to handle, by 
> ignoring it we risk not to fulfill  one of the main requirements of 
> Rbridges: zero configuration.
> Regards
> Guillermo
> 
> Extracted from draft:
> 
> "Support of VLANs does traditionally require configuration 
>    of the bridges (or in this case RBridges) to know which links belong 
>    to which VLANs. In theory some other mechanism might allow an RBridge 
>    to know which VLANs should be supported on which port. The RBridge 
>    design does not care how RBridges discover which VLANs are supported 
>    by each of their ports, but for simplicity we assume here that 
>    RBridges (like bridges) are configured with this information." 
> 
> 
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