Hi all,
The F bit is defined in EVPN L2-Attr extended community of
draft-ietf-bess-rfc7432bis-07.
When the RT-1 per EVI route including that L2-attr pass through a node which
does not recognize a L2-attr EC, there will be two cases:
Case1: that node change the MPLS label of that RT-1 per EVI to a label whose
label operation is a swap.
Case2: that node change the MPLS label of that RT-1 per EVI to a label whose
label operation is a pop, and that second label identifies a local MAC-VRF.
In either of these two cases, that node may propagate that L2-attr to other PEs
(i.e. PE3),
but in case 2 it will cause those PEs to send a flow label to it, while it
cannot decapsulate that flow label thus packet drop may happen.
Is there any solution to make those two cases distinguish from each other (from
the viewpoint of the target receiving PE PE3) ?
Thanks,
Yubao
_______________________________________________
BESS mailing list
BESS@ietf.org
https://www.ietf.org/mailman/listinfo/bess
