Path Considerations AS1 advertises 10.1.1.0/24 to AS2 and AS3. The advertisement to AS3 is marked in some way which prevents it from being advertised to AS4. AS2 advertises 10.1.0.0/16 to AS3 and AS5. AS2 does not advertise 10.1.1.0/24 to AS5. AS4 AS1 AS5 /24 /24 /16 /16 /16 /16 |