Scalability Issues
Database Size
- OSPF topologies limited by Network and Router LSA size (max 64KB) to O(5000) links
- External and Interarea routes are essentially unbounded
- IS-IS topologies limited by LSP count (256 fragments * 1470 bytes) for all route types
- Various hacks (fake pseudonodes, etc.) could make this bigger
- Ultimately a non-issue for even slightly sane topologies