Wednesday, January 10, 2007

CCIE OSPF TIP OF THE DAY FOR CCIE EXAM AND FOR LIFE

OSPF is one of the major IGP protocol for the CCIE lab exam. And one of the major basic configuration considerations is Router-ID, unlike other routing protocols the router-id is most important settings and it is the very first thing you should do before all your network statements or any other setting. why? Well the router is is used trough the process of establishing neighbor relationships, virtual links and basically it is the first break in your OSPF wall. Dont's: I would not live it to faith (lowest loopback interface or lowest other interface). I would not configure 1.1.1.1 or 2.2.2.2 as this are can very well be real IP's both in the real world and in the lab Do I would configure static router-id (for sure). I would configure it based on the loopback first octet rack number for second octet and third and forth octet are router number. So for loopback start with 180 on rack 1 and for router number 4 it will look like so ! ! router OSPF 1 router-id 180.1.4.4 ! hope this been good tip for all you out there :-)
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