21 Jun
2020
21 Jun
'20
9:59 a.m.
On 20/Jun/20 17:12, Robert Raszuk wrote:
MPLS is not flow driven. I sent some mail about it but perhaps it bounced.
MPLS LDP or L3VPNs was NEVER flow driven.
Since day one till today it was and still is purely destination based.
Transport is using LSP to egress PE (dst IP).
L3VPNs are using either per dst prefix, or per CE or per VRF labels. No implementation does anything upon "flow detection" - to prepare any nested labels. Even in FIBs all information is preprogrammed in hierarchical fashion well before any flow packet arrives.
If you really don't like LDP or RSVP-TE, you can statically assign labels and manually configure FEC's across your entire backbone. If trading state for administration is your thing, of course :-). Mark.