Advanced
Computer Networks
Q84 / 100
What is BGP community and how is it used for traffic engineering?
Correct! Well done.
Incorrect.
The correct answer is B) A BGP path attribute (32-bit tag) allowing ASes to attach policies to routes, enabling selective route advertisement, preference setting, and traffic control
B
Correct Answer
A BGP path attribute (32-bit tag) allowing ASes to attach policies to routes, enabling selective route advertisement, preference setting, and traffic control
Explanation
BGP communities (RFC 1997) tag routes with policy metadata. Upstream ISPs honor communities to set local preference, no-export, or blackhole routes. Large communities (RFC 8092) extend the 32-bit space.
Progress
84/100