Shraddha - To follow up on our discussion over chat at the LSR meeting yesterday...
At a remote ABR, if BGP had already been told about a planned node maintenance event (by means that is outside the scope of the UPA draft), then BGP would have moved traffic away from the node on which the maintenance event is scheduled in advance of the arrival of the UPA advertisement. In such a case the arrival of the UPA advertisement would be of no significance. Since traffic has already moved away it does not matter whether BGP processes the UPA or does not. If, however, BGP had NOT been told about planned maintenance in advance, the arrival of the UPA should be treated in the same way regardless of whether the trigger was a planned maintenance event or not. The node associated with the address advertised in the UPA has become unreachable and BGP needs to act accordingly. I therefore see no value add in differentiating between planned/unplanned in the UPA advertisement. I hope this is clear. Please point out what I might have missed. Thanx. Les _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr
