Hello Group, It would appreciated if anyone could shed some light on the following:-
distribute-list X in - filters routes learned via all incoming interfaces from going into the routing table distribute-list X out - filters any external redistributed routes from other protocols. But for OSPF, is it true that... 1) distribute-list X in - will still filters routes from all incoming interfaces from entering into the routing table. I have read on Parkhurst (OSPF Command & Reference) saying that this command can filters "O" & "O IA" route, but not "O E2" routes, yet I have also read on other books saying that only "O IA" routes can be filtered by this, so which is correct? Also, since OSPF uses LSAs, where OSPF neighbors determines routes from the info in the Link State database, this command won't stop the routes from going into OSPF Topology database. 2) distribute-list X in - same as above, except the filtering only applied for routes learned via a specific interface. 3) distribute-list X out - I have read from different books (as well as CCO regarding this). Dr Parkhurst (OSPF Command & Reference) says that this command is useless / has no effect on OSPF... yet I have read on other posts saying this will still work, where ALL different external protocols will be filtered with the list (e.g. if EIGRP & RIP are both redistributed into OSPF, then they would both be filtered). 4) distribute-list X out - filters only a specific external redistributed protocol (O E2) from entering into the ASBR's own OSPF database, hence these external routes will be prevented to be advertised to the rest of OSPF domain. Thanks so much for your help in advance, Regards, Hunt Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=52699&t=52699 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
