In all that I have read in preparation for the CCNA, I have not seen any explanation about *why* the various protocols are assigned the values stated. RIP has a value of 120, OSPF has a value of 110, & EIGRP has a value of 90. Numerically, this ranks OSPF similarly to RIP. However, EIGRP is significantly more "trustworthy" than either of these protocols, but *how* are these values determined?
Any insight anyone can share would be greatly appreciated. Thanks.