The MPLS WG Archive

[Shahram Davari <Shahram_Davari@pmc-sierra.com>]

Diffserv is not supported for non-802.1q networks.

-Shahram

> -----Original Message-----
> From: Vishal M [mailto:vishal_study@yahoo.com]
> Sent: Friday, October 18, 2002 10:03 PM
> To: mpls@UU.NET
> Subject: DiffServ MPLS over Ethernet (L-LSP vs E-LSP)
> 
> 
> 
> Hi,
> 
> If someone wants to use MPLS over ethernet and support
> DiffServ extensions for MPLS (i.e MPLS DS TE), can one
> still choose between using E-LSP or L-LSPs ? 
> 
> The reason for the doubt is:
> The Ethernet header (like ATM) doesn't have any QoS
> information field (unless 802.1q is supported). So
> does that imply that E-LSP can't be used when ethernet
> is the underlying media (and 802.1q is not supported).
> 
> Is L-LSP the only choice then?
> 
> Thanks for your inputs,
> 
> Regards,
> Vishal.
> 
> 
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