Subject: [PWE3] Re:

From: Cao Wei <[email-masked]>
Date: Thu, 01 Jun 2006 18:07:16 +0800

Hi, sajassi,
Yes, 802.1ah frames can be transmitted in "raw mode", if PE does not want to do any extra work other than transmission. 
However, as pointed out in PWE3 arechitecture, in most cases pre-processing operations should be undertaken by PE to provide cost and operational benefits. 802.1ah introduces some new services and I doubt that if these new features can be covered by "vlan mode".

Thanks.

----- Original Message ----- 
From: <[email-masked]>
Sent: Wednesday, May 31, 2006 2:48 PM

> 
> There is currently "raw mode" and "tagged mode" and the VLAN tag can be
> carried in either of the modes, although its interpretation and
> processing would be different at the NSP. For .1ah frames, why not just
> simply look at the Ethernet type at the NSP and process it accordingly
> - 802.1Q, .1ad, and .1ah all have their own Eth type. Either "raw mode"
> or "tagged mode" can be used by .1ah.
> 
> ________________________________
> 
> From: Cao Wei [mailto:[email-masked]]=20
> Sent: Tuesday, May 30, 2006 5:03 AM
> To: [email-masked]
> Subject: [PWE3] Suggestion of a new mode for Ethernet PW for
> 802.1ah
> =09
> =09
> Hi, all
>    I am doing some work on ethernet PW to support 802.1ah. At
> present, two ethernet pw modes are defined: "raw mode" and "vlan mode".
> But to support 802.1ah, NSP may have to inspect I-TAG rather than the
> outmost tag only. So I suggust to introduce a new mode for this.
>    Is there any need or interest for this? I am writing a draft
> to describe this and hope to recive advices.
> =20
> Best Regards,
>     Cao Wei
> 
> 
> ------_=_NextPart_001_01C6847E.3563401F
> Content-Type: text/html;
> charset="us-ascii"
> Content-Transfer-Encoding: quoted-printable
> 
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
> <HTML><HEAD>
> <META http-equiv=3DContent-Type content=3D"text/html; =
> charset=3Dus-ascii">
> <META content=3D"MSHTML 6.00.2900.2883" name=3DGENERATOR>
> <STYLE></STYLE>
> </HEAD>
> <BODY bgColor=3D#ffffff>
> <DIV dir=3Dltr align=3Dleft><SPAN class=3D275123606-31052006><FONT =
> face=3DArial=20
> color=3D#0000ff size=3D2>There is currently "raw&nbsp;mode" and "tagged =
> mode" and=20
> the VLAN tag can be carried in either of the modes, although its =
> interpretation=20
> and processing would be different at the NSP. For .1ah frames, why not =
> just=20
> simply look at the Ethernet type at the NSP and&nbsp;process it=20
> accordingly&nbsp;&nbsp;-&nbsp;802.1Q, .1ad, and .1ah all have their own =
> Eth=20
> type. Either "raw mode" or "tagged mode" can be used by=20
> .1ah.</FONT></SPAN></DIV>
> <DIV dir=3Dltr align=3Dleft><SPAN class=3D275123606-31052006><FONT =
> face=3DArial=20
> color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>
> <DIV dir=3Dltr align=3Dleft><SPAN class=3D275123606-31052006><FONT =
> face=3DArial=20
> color=3D#0000ff size=3D2>-Ali</FONT>&nbsp;</SPAN></DIV><BR>
> <BLOCKQUOTE dir=3Dltr=20
> style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
> solid; MARGIN-RIGHT: 0px">
>  <DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
>  <HR tabIndex=3D-1>
>  <FONT face=3DTahoma size=3D2><B>From:</B> Cao Wei =
> [mailto:[email-masked]]=20
>  <BR><B>Sent:</B> Tuesday, May 30, 2006 5:03 AM<BR><B>To:</B>=20
>  [email-masked]<BR><B>Subject:</B> [PWE3] Suggestion of a new mode for =
> Ethernet=20
>  PW for 802.1ah<BR></FONT><BR></DIV>
>  <DIV></DIV>
>  <DIV><FONT size=3D2>Hi, all</FONT></DIV>
>  <DIV>&nbsp;&nbsp; I am doing some work on ethernet&nbsp;PW to support =
> 802.1ah.=20
>  At present,&nbsp;two ethernet pw modes are defined: "raw mode" and =
> "vlan=20
>  mode". But to support 802.1ah, NSP may have to inspect I-TAG rather =
> than the=20
>  outmost tag only. So I suggust to introduce&nbsp;a new mode for =
> this.</DIV>
>  <DIV>&nbsp;&nbsp; Is there any need or interest for this? I =
> am&nbsp;writing a=20
>  draft to describe this and hope to recive advices.</DIV>
>  <DIV>&nbsp;</DIV>
>  <DIV><FONT size=3D2>Best Regards,</FONT></DIV>
>  <DIV>&nbsp;&nbsp;&nbsp; Cao Wei</DIV></BLOCKQUOTE></BODY></HTML>
> 
> ------_=_NextPart_001_01C6847E.3563401F--
>

_______________________________________________
pwe3 mailing list
[email-masked]
https://www1.ietf.org/mailman/listinfo/pwe3