Apr
04
Hi Brian, What is the major difference in using an E1 route over an E2 route in OSPF? From what I’ve observed, if you redistribute a route into OSPF either E1 or E2, the upstream router will still use the shortest path to get to the ASBR regardless of what is shown in the routing table. The more I read about this, the more confused I get. Am I missing something? Matt Hi Matt, This is actually a very common area of confusion and misunderstanding in OSPF. Part of the problem is that the vast... Read More
Aug
30
One of the most popular series on this blog site is the Redistribution series by Petr Lapukhov. Read More
Feb
15
The leading question: "Is it possible (and if so, how) to redistribute or originate a default route based on time of day?" The short answer is "Sure, why not?"...  But the longer answer has to do with how do we warp the forces of the universe to make that happen??? Well, start with what we know.  We know we can do time-ranges in access-lists, right?  Can we do them in standard access-lists (what we see used for redistribution all the time)? Rack1R1(config-if)#exit Rack1R1(config)#access-list 1... Read More
Jul
19
For the benefit of those who do not have access to the lab below is the task and the diagram: Read More
Feb
19
UPDATE: For more information on Redistribution see the video series Understanding Route Redistribution – Excerpts from CCIE R&S ATC Simple Redistribution Step-by-Step We're going to take our basic topology from the previous post Understanding Redistribution Part I , and configure to provide full connectivity between all devices with the most simple configuration. Then we are going to tweak some settings and see how they affect redistribution and optimal routing. This is going to be an... Read More
Feb
09
UPDATE: For more information on Redistribution see the video series Understanding Route Redistribution – Excerpts from CCIE R&S ATC Read More
Jan
15
Hi Brians, Read More

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