Hi Mike,
The backup default route is a floating route hence you should configure a higher admin distance that the primary default route else both the default routes get installed in the routing table. By default the AD value for a static route is 1. http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094195.shtml Samarth Chidanand Sr Instructor / Developer – IPexpert CCIE #18535 (R&S, Security) CCSI #34585 From: Mike Rojas [mailto:[email protected]] Sent: Sunday, April 14, 2013 3:31 AM To: Samarth Chidanand Cc: Mike Rojas; [email protected] Subject: Re: [OSL | CCIE_Security] WorkBook 1 Task4 point 5 Hi Samarh; It makes sense now, I have a couple of friends studying for R&S and they kinda told me how to configure it but didnt quite catch the idea. It makes sense now. I dont recall if the backup route had a lower AD (for SLA minitor) but in any case Based on ur explanation the Null route has to have lower AD than both static configured routes is that correct? Also, is the DSG for this already released? (Just asking, i kinda like not having it right now to see how bad I am doing :)) Thanks Sent from my iPhone On Apr 12, 2013, at 8:01 PM, "Samarth Chidanand" <[email protected]> wrote: Hi Mike: This is a bit tricky question. By default the admin distance of EIGRP summary route has an AD of 5. If your floating static route (backup default has AD above 5 say 222 or even 6). When Outside-1 goes down. The default null route of EIGRP gets installed which has an AD of 5 and not the Outside-2 default. Hence to avoid this situation we shall increase the AD of the summary EIGRP route above the floating static default. Alternate approach, keep the floating static default of Outside-2 with an AD below the AD of EIGRP summary route. Test it out by shutting P1.34 interface. DSG has these captured. route Outside-2 0.0.0.0 0.0.0.0 100.100.35.5 222 summary-address eigrp 111 0.0.0.0 0.0.0.0 250 Samarth Chidanand Sr Instructor / Developer – IPexpert CCIE #18535 (R&S, Security) CCSI #34585 From: [email protected] [mailto:[email protected]] On Behalf Of Mike Rojas Sent: Saturday, April 13, 2013 4:29 AM To: [email protected] Subject: [OSL | CCIE_Security] WorkBook 1 Task4 point 5 Hi, I do have some questions in regards to that specific point. It says that I need to send the default route to Router 1 (Which I already did to practice prefix lists :)) but it also says that change the distance of the null route to 250 and that is where I get confused. Is the null route the default route? Also, is that route the same one that it is being advertised? I saw that I can change the distance, but only for routes inserted on our routing table. Was looking also for the DSG of Workbook 1 but it seems like it is not finished already. Thanks, Mike.
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