how many IBGP sessions will be required to establish fully meshed IBGP peerings?

seenagape

9 years ago

In an AS with 10 routers running IBGP, how many IBGP sessions will be required to establish fully
meshed IBGP peerings?

A.
10

B.
20

C.
45

D.
50

E.
99

F.
100