Shahram,
This question is
somewhat out of scope wrt EFM, but the answer is yes, the EFM OAMPDU flow must
be terminated at the Provider Edge. Otherwise it would flow through the
provider's SONET network and get mixed in with a separate EFM OAMPDU flow at
the far end.
SD=> Which separate OAMPDU flow? do you mean
from ONU2 to OLT2?
Note that you have the terms ONU / OLT
reversed.
So the ONU is the customer
side?
This "filter
function" is being defined in the ITU-T SG15 / Q.12 work in draft G.ethna (was
G.etna) and in the OIF UNI v2.
Thanks I will have a
look.
The PE-PE, or SONET
portion is not an EFM link, but rather a SONET path, which has its own OAM
(i.e. POH).
Agree.
...Dave
David W.
Martin
Nortel Networks
dwmartin@xxxxxxxx
+1 613 765-2901 (esn
395)
~~~~~~~~~~~~~~~~~~~~
-----Original
Message-----
From: Shahram
Davari [mailto:Shahram_Davari@xxxxxxxxxxxxxx]
Sent: Monday, February 10, 2003 2:13
PM
To:
stds-802-3-efm@ieee.org
Subject: [EFM] Question regarding OAM in
802.3ah D1.3
802.3ah section 57 says that the
OAM defined is for single link (or emulated link), and should not be forwarded
by bridges/switches.
My question is, in case of
Ethernet over SONET transport (GFP + Virtual concatenation), should the OAMPDU
be terminated at the EOS device or it should be transparently
transported?
OLT1 -------------- ONU
1------------------ ONU 2 ------------ OLT 2
Assume OLT1 and OLT2 are the
customer equipments and ONU1 and ONU2 are provider
transport equipments that
transport Ethernet over SONET (but don't do any
switching/bridging).
In this case should ONU1 terminate
OAMPDUs from OLT1 or it should sent them transparently to
OLT2?
In other words is OLT1--ONU1
considered a single link? what about ONU1 to ONU2, is this also a
link?
Shahram Davari
Senior Product Research
Engineer
R&D Research Ottawa
PMC-Sierra, Inc.
Phone: (613)
271-4018
Fax: (613) 271-6468