openconfig/public

Clarification regarding ospf graceful restart attributes

shashu89 opened this issue · 3 comments

Hi,

I just wanted to confirm if my understanding regarding graceful restart attributes in openconfig is correct:

  • enabled : This parameter enables Router to go to OSPF GR speaker mode
  • helper-only : This parameter enables Router to go to OSPF GR helper mode ( helper-only seems misleading )
    So, I believe these both are exclusive and when both are enabled, Router will be in both speaker and helper mode.
dplore commented

/network-instances/network-instance/protocols/protocol/bgp/global/graceful-restart/config/helper-only

From my interpretation I think helper-only means the target device should only implement section 4.2 of RFC4724

Hence, the target behaves only as a receiver/listener of graceful restart. The target would not support retaining forwarding when it's own BGP process restarts. Seems relatively clear in the doc?

Thanks for your response. So these definitions are correct?
enabled : This parameter enables Router to go to OSPF GR speaker mode
helper-only : This parameter enables Router to go to OSPF GR listener mode

dplore commented

Yes, this is my interpretation. I welcome any other comments.