Loss of Connectivity
Reason is outside the AS: BGP
- not the focus of this presentation
Reason is inside the AS: IGP
- the focus of this presentation (ISIS)
IGP Backbone Convergence:
- the time it takes for connectivity to be restored upon link/node failure/addition for an IP flow starting on an edge access router and ending on another edge access router, excluding any variation of BGP routes.
For the remaining of this session, IGP = ISIS