They can be the same if the underlay provider wants to control overlay's group address allocation. Dino > On Feb 12, 2015, at 6:50 AM, Black, David <david.black@xxxxxxx> wrote: > > I don't care what terms are used - it just needs to be absolutely clear that > the inner and outer multicast addresses are not the same and that mapping > between them (which could take a number of forms) is involved. > > Thanks, > --David > >> -----Original Message----- >> From: Dino Farinacci [mailto:farinacci@xxxxxxxxx] >> Sent: Thursday, February 12, 2015 8:15 AM >> To: Luigi Iannone >> Cc: Black, David; ops-dir@xxxxxxxx; lisp@xxxxxxxx; Albert Cabellos; Damien >> Saucez; ietf@xxxxxxxx >> Subject: Re: [lisp] OPS-Dir review of draft-ietf-lisp-introduction-11 >> >>> G-EID => the EID multicast group G >>> G-RLOC => the RLOC multicast group G >> >> "inner and outer group addresses" have been used in various LISP multicast >> documents. >> >> Dino