11. Suppose a network N within a larger organization A acquires its own direct connection to an Internet Service Provider, in addition to an existing connection via A. Let Rl be the router connecting N to its own provider, and let R2 be the router connecting N to the rest of A. (a) Assuming N remains a subnet of A, how should RI and R2 be configured? What limitations would still exist with N's use of its separate connection? Would A be prevented from using N's connection? Specify your configuration in terms of what RI and R2 should advertise, and with what paths. Assume a BGP-like mechanism is available. (b) Now suppose N gets its own network number; how does this change your answer in (a)? (c) Describe a router configuration that would allow A to use N's link when its own link is down