eBGP Graceful-Restart and GR Helper Mode with external networks.

Mon Nov 24 20:08:11 UTC 2014

Is there a BCOP (or substantiated opinion) for negotiating eBGP
Graceful-Restart and Graceful-Restart Helper-Mode with external networks?
Implementation looks varied across a few larger transit providers, and in
some cases implemented inconsistently within the same provider.  Seeing
most IX peers with GR disabled, although I don't see they've disabled GR
Helper Mode.  Apparently, Junos (12.3, at least) doesn't offer disabling GR
Helper Mode for BGP.

Thanks.