Re: XGMII a/k/r
Brad,
Okay. If I take your description literally, the /lowercase/ means 8b
octet while the /uppercase/ means 10b code-group. Does this mean the
10b code group is transferred across the medium? I don't think this
has ever been suggested, at least since we discounted 12.5 Gbaud
optics.
Aside from above, I have a question about the /o/ (I use lower
case because these are carried from PCS to PCS (PHY to PHY?) in
your picture). Would (Could?) these be used to carry your /rf/ &
/bl/? Other than the OAM&P that Osamu Ishida has suggested (XGENIE)
and Fibre Channel "things" (both of which deserve more discussion),
what else would the /o/ carry? Why would /rf/ & /bl/ use dedicated
encodings? This might allow for multiple reasons for /rf/ and /bl/
or even count values or something else clever within the /o/d/d/d/
ordered set.
Ben
"Booth, Bradley" wrote:
>
> Ben,
>
> I used lower case letters to avoid confusion between what XAUI uses and what
> the XGMII uses. I had the /O/ code-group generated and terminated in the
> PCS, instead of the RS. Plus, like you noticed, I took out /RF/ and /BL/.
> I was going to use a different coding for what is on the MDI, but I didn't
> want to create too much confusion.
>
> Cheers,
> Brad
>
> -----Original Message-----
> From: Brown, Ben [BAY:NHBED:DS48]
> [mailto:bebrown@nortelnetworks.com]
> Sent: Thursday, April 06, 2000 4:30 PM
> To: HSSG
> Subject: Re: XGMII a/k/r
>
> Brad,
>
> Other than the missing /RF/ and /BL/
> code-groups/characters/bytes
> or whatever we're calling them these days, how is this
> picture
> different from page 2 of Rich Taborek's original collection?
>
> Ben
>
>
--
-----------------------------------------
Benjamin Brown
Router Products Division
Nortel Networks
1 Bedford Farms,
Kilton Road
Bedford, NH 03110
603-629-3027 - Work
603-624-4382 - Fax
603-798-4115 - Home
bebrown@nortelnetworks.com
-----------------------------------------