AD of EIGRP summanry route

From: Fahad Khan (fahad.khan@gmail.com)
Date: Fri Jul 18 2008 - 18:11:33 ART

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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