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Fwd: MPLS DiffServ over Ethernet (L-LSP vs E-LSP)

  • From: Irwin Lazar <ilazar@mplsrc.com>
  • Date: Sat, 19 Oct 2002 10:27:41 -0400
  • Resent-Date: Sat, 19 Oct 2002 12:12:45 -0400
  • To: mpls-ops@mplsrc.com
  • X-Sender: ilazar/mplsrc.com@localhost


from: vishal_study@yahoo.com


>Hi,
>
>If someone wants to use MPLS over ethernet and support
>DiffServ extensions for MPLS, 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 e used when ethernet
>(without 802.1q support) is the underlying media. Is
>L-LSP the only choic then?
>
> >From the RFCs and drafts on this topic, it appears
>that both kind of LSPs have pros and cons. Has someone
>really implemented L-LSPs ?
>
>Thanks for your time and inputs,
>
>Regards,
>Vishal.
>
>
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