From: Anand 1871 (an1871@gmail.com)
Date: Sat Jul 19 2008 - 03:51:03 ART
Fahad,
When we summarize in EIGRP.. we automatically install a NULL route on our
routing table. This distance refers to the AD for the NULL route installed.
In your case, if you check the routing table of R1, you will null route
installed for 2.2.0.0 with AD of 5.
This AD is present only on the local router (R1 in your case). Others wont
see this null route.
It is given an AD 5.. cause you would want it to be higher than static and
lower than other protocols.
Hope the info helped.
Anand
On Sat, Jul 19, 2008 at 2:41 AM, Fahad Khan <fahad.khan@gmail.com> wrote:
> Dear Experts,
>
> while going through eigrp summarization, i saw,
>
> R1(config-if)#ip summary-address eigrp 100 2.2.0.0 255.255.0.0 ?
> *<1-255> Administrative distance*
> leak-map Allow dynamic prefixes based on the leak-map
> <cr>
> In cisco command reference guide, i read that , we cant configure AD of
> eigrp summary route and it is "5" by default. then why we have this option
> under this command?. Although , if we change AD through this command, we
> wont find any change any where.
>
>
> further more, I saw,
>
> R1(config-subif)#ip summary-address eigrp 100 2.2.0.0 255.255.0.0 ?
> <1-255> Administrative distance
> <cr>
>
> In sub-interface, we do not have *leak-map* option, why?
>
> Can any body plz shed light over these points?
>
> Thanks and regards,
> --
> FAHAD KHAN
>
> BE Computer Systems NED,
>
> CCNA,CCDA,CCNP,FOUNDFE,CLSE,QOS,JNCIA,JNCIS,MCP,CCIE (Written)
>
> Systems Support Engineer, Premier Systems (Pvt) limited,
>
> Karachi, Pakistan
>
> 92-321-2370510.
>
>
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