Hey Don, Not sure I am following this but I will give it a try (just had a quick look ;) )
Where I would say that you may have went in the wrong was R1 and R5 indicated to put all other loopbacks into their appropriate areas (not to create an area 0) so.... R1 - Loopback can be area 16 or 15 R5 - Loopback can be area 15 or 25 HTH - and if I am off base you or someone will guide me straight :/ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Don Lundquist Sent: May-08-11 9:25 PM To: [email protected] Subject: [OSL | CCIE_RS] Workbook 3, Lab9, Task 2.3, Bullet #2 I went through this section relatively quickly but at the end I was curious as I did something a little different than what is provided in the DSG... The second bullet states: .... Add the Loopback0 interface of each of the other devices (R5/R1) to the appropriate area.. The subsequent bullets discuss connectivity between loopbacks throughout the OSPF network need to be maintained and if connectivity is lost between R2/R6, they must be able to reach each others Loopback0 intf's... I added the loopbacks of R1/R5 to Area 0, via virtual-links to either R1->R5->R2 or via R1->R6... The DSG has them listed as being installed to Areas other than 0 which are connected via physical interfaces.. Are there any caveats I am overlooking by placing them in Area 0 and utilizing the redundant Virtual-Links... R2#sho ip route ospf 70.0.0.0/8 is variably subnetted, 15 subnets, 4 masks O 70.18.103.1/32 [110/3] via 70.18.26.6, 00:17:08, FastEthernet0/0.26 [110/3] via 70.18.25.5, 00:22:46, FastEthernet0/0.25 R1# interface Loopback0 ip address 70.18.103.1 255.255.255.255 ip ospf 7018 area 0 ! router ospf 7018 router-id 1.1.1.1 log-adjacency-changes area 15 virtual-link 5.5.5.5 authentication message-digest area 15 virtual-link 5.5.5.5 message-digest-key 1 md5 cisco area 16 virtual-link 6.6.6.6 authentication message-digest area 16 virtual-link 6.6.6.6 message-digest-key 1 md5 cisco Thanks, Don _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
