dan
you wrote
In this service model, no provider network routing information is
leaked to CEs, only CE-PE TE link routing information is carried
through the backbone. The size of such routing information is
relatively small, but if the customers need to form routing adjacency
between CEs over CE-CE connections in order to exchange customer site
routing information, it may cause up to N-square routing adjacencies
between CEs (if a full mesh was aimed at). So in this situation,
scalability may become an issue.
indeed ... but the first issue is to know when CE's are IP/MPLS LSRs
whether they are willing to accommodate an adjacency with their attached
PE's to prevent such effect - there is another aspect to take into
account the CE-to-CE adj. in a pure overlay is an IP adj. while in the
VPN context it is far from clear whether the CE-PE routing adj. will be
used to exchange other information than L1VPN membership, CE-PE TE link
information, etc. ... in brief, the extended model also considering
unification of the routing instance at the CE level and not only between
the client and the network ?
-d.
Dan Li wrote:
Dear WGs,
I’ve posted a new draft which presents detailed information with respect to the four sub-models of the L1VPN enhanced mode.
Comments are very welcome.
Thanks,
Dan
Abstracts:
This document presents detailed information with respect to the four sub-models
of the Layer One Virtual Private Network (L1VPN) enhanced mode. Each sub-model
is evaluated from different points of view, such as Topology Confidentiality,
scalability, and reliability. The requirements on GMPLS to support each
sub-model of the L1VPN enhanced mode are also discussed in this document.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-li-l1vpn-enhanced-mode-analysis-00.txt
Dan Li
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