CCIE SP MPLS FAQ: Advanced MPLS/VPN Topics
Figure: VPN and Backbone Network Convergence
1: During periods of convergence, why does a cell-mode MPLS implementation typically take longer to converge than a frame-mode implementation?
2: How often does the import scanner run on a PE router?
3: Why is it necessary to be careful when adjusting the scanner interval from its default of 60 seconds?
4: Can a single BGP session carry routes for multiple address families?
5: If only VPNv4 routes must be carried across a BGP session, which command prevents the advertisement of IPv4 routes?
6: Describe the functionality of a route reflector.
7: Describe the main benefit of route-reflector partitioning.
8: Describe the ORF capability.