Hi Tarik,

 

When installed in the routing table you can see the admin distance.

 

 

Samarth Chidanand

Sr Instructor / Developer - IPexpert

CCIE #18535 (R&S, Security)

CCSI #34585

 

 

 

From: [email protected]
[mailto:[email protected]] On Behalf Of Tarik Admani
Sent: Tuesday, May 21, 2013 7:21 AM
To: [email protected]
Subject: [OSL | CCIE_Security] WorkBook 1 Task4 point 5

 

Sam,

I also took a look at this section and wanted to make sure my understanding
is correct.

If I add the summary route to the interface then remove both floating static
routes, then 
I am left with the null default route, however I do not see the
administrative distance on the asa,
when I issue a show route.

I wanted to know one could verify the AD of the summary route by looking in
the routing table or
is the interface command for the summary address the only way to make sure?

Thanks,




 You do not need prefix list
 
interface GigabitEthernet0/1
 
authentication key eigrp 111 CISC0I123 key-id 10
 
authentication mode eigrp 111 md5
 
summary-address eigrp 111 0.0.0.0 0.0.0.0 250
 
 
 
NULL route is similar to a discard route and is locally significant on that
router which advertises EIGRP default route or uses summary address in
eigrp. Here we are referring to the AD of the NULL route and not the AD of
the advertised route which R1 receives.
 
 
 
See below R1 has the default route but the AD is the default of 90. Hence
what we are taking about is the AD of the NULL route generated when
summary-address command is used on ASA which is locally significant.
 
 
 
 
 
R1#sh ip ro
 
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
 
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
 
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
 
       E1 - OSPF external type 1, E2 - OSPF external type 2
 
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
 
       ia - IS-IS inter area, * - candidate default, U - per-user static
route
 
       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
 
       + - replicated route, % - next hop override
 
 
 
Gateway of last resort is 192.168.103.10 to network 0.0.0.0
 
 
 
D*    0.0.0.0/0 [90/28416] via 192.168.103.10, 00:17:44, FastEthernet0/0
 
 
 
 
 
 
 
Samarth Chidanand
 
Sr Instructor / Developer - IPexpert
 
CCIE #18535 (R&S, Security)
 
CCSI #34585
 
 
 
 
 
From: ccie_security-bounces at onlinestudylist.com
<http://onlinestudylist.com/mailman/listinfo/ccie_security> 
[mailto:ccie_security-bounces at onlinestudylist.com
<http://onlinestudylist.com/mailman/listinfo/ccie_security> ] On Behalf Of
Mike Rojas
Sent: Saturday, April 13, 2013 4:29 AM
To: ccie_security at onlinestudylist.com
<http://onlinestudylist.com/mailman/listinfo/ccie_security> 
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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