Dave, > Hey Suki, > > On Thu, Mar 04, 2004 at 02:14:20PM -0800, sonet twister wrote: > >> Hello, > >> > >> i heard there is a way to run MPLS for layer3 VPN(2547) > >> service without needing to run label switching in the > >> core(LDP/TDP/RSVP) but straight IP (aka iMPLS). > > ftp://ftp.ietf.org/internet-drafts/draft-townsley-l2tpv3-mpls-01.txt > > See also Mark's talk from the last NANOG > > http://nanog.org/mtg-0402/townsley.html
That requires to run L2TP. An alternative is to run GRE (or even plain IP). The latter (GRE) is implemented by quite a few vendors (and is known to be interoperable among multiple vendors). The spec is draft-ietf-l3vpn-gre-ip-2547-01.txt. Yakov.