The second is definitely correct. The first is also correct if you consider the "cost of the path to the ASBR" as the cost of the path from the destination network to the ASBR, but not if you consider it as the cost to get to the ASBR across the OSPF network.
E1 cost = external metric + OSPF path cost E2 cost = external metric E1 is always preferred to E2 if both exist, regardless of the individual metrics. Hope this helps... -- Russell Heilling http://www.ccie.org.uk/ ""Matthew Webster"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > I studying the CiscoPress CCNP Routing Book at the moment. There appears to > be a contradiction on page 294 and 295. on page 294: the path to another AS > can be calculated in one of two ways. The second way (E2) states that the > cost of the path to the ASBR is all that is considered in the equation. > However in table 6-2 on p.295 it states that LSA type 5, in relatino to E2 > "dopes not compute the internal cost - it just reports the external cost to > eh remote destination". This seems to be the opposite of the previosu > statement. > > Can any advise which way round it is (although I think it is the cost to the > ASBR, and not the cost from the ASBR to the remote destination). > > Cheers, > Matthew. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=54305&t=54293 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
