Re: [EFM] EFM-OAM frame fomat
Matt-
I believe that you are incorrect.
The reason for the "Slow Protocol" being differentiated from the original
MAC Control Frame used for "PAUSE" is that PAUSE Frames have to be caught
in hardware, Slow Protocol frames are candidates for software handling.
Geoff
At 07:27 PM 9/15/2003 -0400, Matt Squire wrote:
>Just to second Alan, the slow protocols cannot be LLC encapsulated or
>802.3Q encapsulated or anything else. They are a native ethernet protocol
>with a single encapsulation intended for (some) potential processing in
>hardware.
>
>- Matt
>
>
>-----Original Message-----
>From: Alan Weissberger <ajwdct@technologist.com>
>Sent: Sep 15, 2003 1:33 PM
>To: Shahram Davari <Shahram_Davari@pmc-sierra.com>, stds-802-3-efm@ieee.org
>Subject: Re: [EFM] EFM-OAM frame fomat
>
>
><P>Shahram</P>
><P>I don't believe an Ethernet OAM frame can be sent with LLC
>embedded. My understanding is that the Type field= Slow protocol frame,
>which precludes carrying embedded LLC PDU. In other words, the OAM PDU is
>self contained and there is no LLC or higher layer carried within the user
>data field</P>
><P>Hence, it is not possible to have the last 2 Ethernet frame formats
>carry an OAM frame:</P>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003>- 802.3 + LLC
>(802.2)</SPAN></FONT></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003>- 802.3 + LLC
>+SNAP</SPAN></FONT></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003></SPAN></FONT>
></DIV>
><DIV><FONT face=Arial size=2><SPAN
>class=015465616-15092003>Rgds</SPAN></FONT></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003></SPAN></FONT>
></DIV>
><DIV><FONT face=Arial size=2><SPAN
>class=015465616-15092003>alan</SPAN></FONT></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003><PRE>Alan
>Weissberger</PRE><PRE>DCT
>2013 Acacia Ct
>Santa Clara, CA 95050-3482
>1 408 863 6042 voice
>1 408 863 6099 fax</PRE></SPAN></FONT></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003></SPAN></FONT>
></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003></SPAN></FONT>
></DIV>
><P><BR><BR>----- Original Message -----<BR>From: Shahram Davari
><SHAHRAM_DAVARI@PMC-SIERRA.COM><BR>Date: Mon, 15 Sep 2003 10:02:33
>-0700<<BR>To: stds-802-3-efm@ieee.org<BR>Subject: [EFM] EFM-OAM frame
>fomat<BR><BR></P>
><META content="MSHTML 6.00.2800.1106" name=GENERATOR>
><DIV><FONT face=Arial size=2><SPAN
>class=015465616-15092003>Hi,</SPAN></FONT></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003></SPAN></FONT>
></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003>As you know
>there are 4 Ethernet frame formats:</SPAN></FONT></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003></SPAN></FONT>
></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003>- Ethernet
>v2</SPAN></FONT></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003>-
>802.3</SPAN></FONT></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003>- 802.3 + LLC
>(802.2)</SPAN></FONT></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003>- 802.3 + LLC
>+SNAP</SPAN></FONT></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003></SPAN></FONT>
></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003></SPAN></FONT>
></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003>It seems that
>the currently defined EFM-OAM frame format is based </SPAN></FONT></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003>on Ethernet
>v2. What is the EFM-OAM frame format for other Ethernet
>frame</SPAN></FONT></DIV>
><DIV><FONT face=Arial size=2><SPAN
>class=015465616-15092003>types?</SPAN></FONT></DIV>
><DIV><FONT face=Arial size=2><SPAN class=015465616-15092003></SPAN></FONT>
></DIV>
><DIV><FONT face=Arial size=2><SPAN
>class=015465616-15092003>Thanks,</SPAN></FONT></DIV>
><DIV><FONT face=Arial><SPAN class=015465616-15092003></SPAN></FONT><FONT
>face=Arial size=2><SPAN class=015465616-15092003>-Shahram</SPAN></FONT></DIV>
><DIV> </DIV><PRE> </PRE>
>
>