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Case1 : PE-based/Single AS
PE-based AFBR
PEs trust each other. Authentication may be turned off in some circumstances. (per Softwire Problem Statement)
When transit core includes non-trusted devices, security protection is required.
AF(j)-transit core
single AS
AF(i)-access
AF(i)-access
AF(i)-access
iBGP
iBGP
iBGP
PE
PE
PE
trusted each other
PPT Version