From: plukkie@gmail.com
Date: Mon Aug 21 2006 - 07:15:56 ART
Hi,
What's the golden rule for FR-mappings if there's a router present with IETF encapulation?
background.
I did some testing with a frame-relay Hub-Spoke topology and encapsulation IETF and are confused how the mappings should be. I got this setup 2 times now on the exam, with one of the routers IETF encapsulated, but I doubt I did it correct. Seems to be if looking at connectivity, it doesn''t matter when using all cisco's, but i doubt it's the correct way.
Setup: spokeR2 ------ hubR1 ------ spokeR3
FR encapsulation hubR1=IETF and spokes R2,R3=Cisco
mappings on spokeR2:
to R1 IETF
to R3 CISCO
mappings on spokeR3:
to R1 IETF
to R2 CISCO
mappings on hubR1:
to R2 IETF (cause interface encapsulation is IETF)
to R3 IETF (cause interface encapsulation is IETF)
If I do a ping from R2 to R3, I send as expected out with cisco encap, but the reply is IETF encapsed by the hub:
Serial1/0:0(o): dlci 201, pkt type 0x800(IP)
Serial1/0:0(i): dlci 201, NLPID 0x3CC(IP)
Can someone please clarify this once and for all?
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