Operation for Tunneling FR
RA
RC
RB
Step 1
A sends a frame for C
Step 2
Ingress sub-interface with DLCI 1001 on RA is matched to tunnel 2 and IP/L2TPv3 is prepend
Step 3
RC removes IP/L2TPv3 Header. The remaining FR Header is rewritten with DLCI 2001
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