Mathew An easy way to remember is that E1 metrics are comparable with the intra-AS costs and thus adding intra-AS costs makes a significant change to total costs. E2 metrics on the other hand are magnitudes greater than intra-AS costs so adding intra-AS costs will be an insignificant change. This is why E1=external metric + Intra-AS cost and E2=external metric
Hope this helps Regards, Michael -----Original Message----- From: Matthew Webster [mailto:[EMAIL PROTECTED]] Sent: 27 September 2002 02:23 AM To: [EMAIL PROTECTED] Subject: OSPF LSAs [7:54293] 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=54307&t=54293 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
