O'Reilly Malt & Whiskey Distillery has a network configured based on the schema below. Each location consists of one LAN and and each connects to the other over a WAN serial link. The Cork router is completely configured and in full working order. However, users on the Dublin router cannot reach Cork users via the serial link. Please investigate the issue and make the changes necessary to enable connectivity between both the Dublin and Cork routers via the serial link. The routers have been configured with the following specifications: The routers are named Dublin and Cork. OSPF is the routing protocol within single Area 0. 100 is the Process ID. The clocking (56000) is provided on the Serial 0 interfaces. The secret password on each router is "cisco".

Inside Tips: This question is very precise - you do not need to access any router other than Dublin. Write down the configs for Dublin along with a brief outline of the question before you attempt to do anything. The trick here is to compare the output from the "show running-config" command with the configurations that you have written down. Look at the settings for ospf. Do you understand slash notation /28 and how to convert it to a subnet mask? When done - how is the subnet mask applied to ospf? Wildcards? If you are clueless - it's time to hit the books before tackling this Lab. Study classless routing protocols. Remember that "show running-config" is your friend and as always - save your work - "copy running-config startup-config". There are several "show" commands that will help you solve this lab without using "show running-config". However, I took the short-cut again that works for most trouble-shooting issues.