Yes, that looks like a good way of expressing the problem
Stewart
On 21/04/2012 09:52, David Freedman wrote:
"The WG will determine whether an IP, and/or an emulated Ethernet
service is needed"
How about dropping the references to IP and Ethernet completely to
avoid arguments like this?
"The WG will determine which types of service are needed"
If you really wanted to keep IP/Ethernet, you could provide these as
examples
"The WG will determine which types of service are needed (for example,
IP or Ethernet)"
Dave.
From: Stewart Bryant <[email protected] <mailto:[email protected]>>
Reply-To: <[email protected] <mailto:[email protected]>>
Date: Sat, 21 Apr 2012 08:33:53 +0100
To: Xuxiaohu <[email protected] <mailto:[email protected]>>
Cc: "[email protected] <mailto:[email protected]>" <[email protected]
<mailto:[email protected]>>, "[email protected] <mailto:[email protected]>"
<[email protected] <mailto:[email protected]>>, "LASSERRE, MARC (MARC)"
<[email protected]
<mailto:[email protected]>>
Subject: Re: [nvo3] NVO3 charter 1530UK 12April
On 21/04/2012 02:35, Xuxiaohu wrote:
Hi Marc,
I agree that L3 over L3 should also be considered by NVo3 besides of
the L2 over L3.
However, I think the sentence you proposed “a routed and/or bridged
Ethernet service” is still not clear enough and hence it may be
interpreted mistakenly as follows: the routed Ethernet service means
a L2VPN service with control-plane based MAC learning capabilities
such as EVPN or something like that (By the way, I remembered one
prior name of the EVPN is “routed VPLS” or “R-VPLS” in short), while
the bridged Ethernet service means a L2VPN service with data-plane
based MAC learning capabilities, such as existing BGP or LDP based VPLS.
There are two problems with this
Does it mean ("routed Ethernet service" || "bridged Ethernet service")
or does it mean ("routed service" || "bridged Ethernet service")?
There are so many flavours of Ethenet switching and transmission that
we need to be very careful.
If we say routing meaning IP routing then we end up with issues of
whether MPLS is in or out.
The original text ""The WG will determine whether an IP, and/or an
emulated Ethernet service is needed" avoids this minefield.
- Stewart
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