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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