[156779] in North American Network Operators' Group
RE: Ethernet OAM BCPs Please are there any yet???
daemon@ATHENA.MIT.EDU (Jonathon Exley)
Wed Sep 26 12:47:09 2012
From: Jonathon Exley <Jonathon.Exley@kordia.co.nz>
To: "nanog@nanog.org" <nanog@nanog.org>
Date: Wed, 26 Sep 2012 16:34:08 +0000
In-Reply-To: <024001cd9bc9$4bdeb230$e39c1690$@swan.sk>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
The ITU recommend the following levels:
5,6,7 =3D Customer
3,4 =3D Provider
1,2 =3D Operator
0 =3D Local segment
I don't know if there are any rules of thumb for the CCM interval - faster =
is more sensitive & unstable, slow is sluggish but stable. The spec allows =
between 3.33 ms and 10 minutes in 7 steps, with 1s being the midpoint. So w=
e use 1s intervals.
I'm not sure if the other parameters you mention are configurable for CCM. =
I think the packet has a constant size. Are you wanting to also do Y.1731 p=
erformance management?
Jonathon =
> -----Original Message-----
> From: Adam Vitkovsky [mailto:adam.vitkovsky@swan.sk]
> Sent: Wednesday, 26 September 2012 9:29 p.m.
> To: nanog@nanog.org
> Subject: Ethernet OAM BCPs Please are there any yet???
> =
> Hi
> Are there any best common practices for the CFM levels use Since my pure
> Ethernet aggregation layers are small I believe I only need two CFM level=
s I
> plan on using Level 5 between CPEs managed by us and Level 4 between
> Aggregation devices -that's where MPLS PWs kicks in So leaving Level 7 and
> Level 6 for customers and carrier-customers respectfully -would this be
> enough please?
> =
> I'm also interested on what's the rule of thumb for CCMs Frequency,
> Number of Packets, Interpacket Interval, Packet Size and Lifetime for the
> particular operation Thanks a lot for any inputs
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