RE: [EFM] 1 Gbps != 999.9 Mbps
Harry et al
yup, all the IP 'stuff' is payload as far as the demarcation point is
concerned.
The demarc is a PHY that carries packets at the end of the day. Some demarcs
may be buried inside a bigger system, however, the standard must also cater
for stand alone demarc devices. My expectation as a user would be that at
the demarc the bandwidth was the same capacity as my enterprise MAC and PHY
of the same spec.
Would I miss 10k per second on a 1GE, I doubt it.
Would my test gear pick it up on an end to end private circuit test, I don't
know, anyone on the reflector tried this?
Bob
> -----Original Message-----
> From: Harry Hvostov [mailto:HHvostov@xxxxxxxxxxxx]
> Sent: 27 September 2001 17:41
> To: 'fmenard@xxxxxxxxxxxxxxx'; 'Denton Gentry';
> bob.barrett@xxxxxxxxxxxxxxx
> Cc: 'stds-802-3-efm'
> Subject: RE: [EFM] 1 Gbps != 999.9 Mbps
>
>
> And how about the ICMP and IGMP traffic from the same CPE devices?
>
> Harry
>
> -----Original Message-----
> From: Francois Menard [mailto:fmenard@xxxxxxxxxxxxxxx]
> Sent: Thursday, September 27, 2001 6:05 AM
> To: 'Denton Gentry'; bob.barrett@xxxxxxxxxxxxxxx
> Cc: 'stds-802-3-efm'
> Subject: RE: [EFM] 1 Gbps != 999.9 Mbps
>
>
>
> Or for that matter, what about ARP traffic unsolicited from my CPE
> devices ?
>
> -=Francois=-
>
> -----Original Message-----
> From: owner-stds-802-3-efm@majordomo.ieee.org
> [mailto:owner-stds-802-3-efm@majordomo.ieee.org] On Behalf Of Denton
> Gentry
> Sent: September 26, 2001 3:12 PM
> To: bob.barrett@xxxxxxxxxxxxxxx
> Cc: stds-802-3-efm
> Subject: [EFM] 1 Gbps != 999.9 Mbps
>
>
>
> > Service providers have a desire to offer a full 1GE service and not
> > use any of it's bandwidth for OAM. The rule of conservation of
> > bandwidth means the OAM needs to go somewhere other then in the
> > bandwidth reserved for the 1GE payload. I take it as read that 100%
> > utilisation of a 1GE is unlikely, but that is not the point. The point
>
> > is that service providers want to offer 1GE service period, not a
> > 999.9Mbit service.
>
> Does the existence of the Mac Control PAUSE frame therefore make
> Ethernet unsuitable for service providers?
>
> Denton Gentry
> Dominet Systems