From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Wed Dec 07 2005 - 15:52:16 GMT-3
The distance command for EIGRP doesn't work when you try to specify a
particular external route (distance <distance> <source IP address> <IP
address mask> <ACL> but the command will let you set the administrative
distance for all EIGRP external routes (distance eigrp <Distance for
internal routes> <Distance for external routes>).
As a side note you can set the administrative distance for a particular
OSPF external route.
Rack1R4#sho ip route os
155.1.0.0/24 is subnetted, 2 subnets
O E2 155.1.1.0 [110/20] via 155.1.146.1, 00:00:01, Ethernet0/0
O E2 200.1.1.0/24 [110/20] via 155.1.146.1, 00:00:01, Ethernet0/0
150.1.0.0/24 is subnetted, 1 subnets
O E2 150.1.1.0 [110/20] via 155.1.146.1, 00:00:01, Ethernet0/0
Rack1R4#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Rack1R4(config)#access-list 5 permit 150.1.1.0
Rack1R4(config)#router ospf 1
Rack1R4(config-router)#distance 140 200.1.1.1 0.0.0.0 5
Rack1R4(config-router)#do clear ip rout *
Rack1R4(config-router)#do sho ip rout os
155.1.0.0/24 is subnetted, 2 subnets
O E2 155.1.1.0 [110/20] via 155.1.146.1, 00:00:05, Ethernet0/0
O E2 200.1.1.0/24 [110/20] via 155.1.146.1, 00:00:05, Ethernet0/0
150.1.0.0/24 is subnetted, 1 subnets
O E2 150.1.1.0 [140/20] via 155.1.146.1, 00:00:05, Ethernet0/0
Rack1R4(config-router)#
HTH,
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Le Anh Duong
Sent: Wednesday, December 07, 2005 9:01 AM
To: Cisco certification
Subject: Admin Distance of External EIRGP route
Hi group,
Is it possible to change the Administrative Distance (AD) of a specific
EIGRP
external route ?
Take the following for example:
R1f0/0---------f0/0 R2----loop1
|
loop2
R1 and R2 run EIGRP on ethernet segment, R2 redistribute loop1 and loop2
into
EIGRP. R1 wants to change the AD of route to loop1 to 190 and keep the
AD of
root to loop2 (AD=170).
The "distance 190 IP_add_of_R2_f0/0 Access-list" does not help. This
command
only can change AD of internal EIGRP routes.
The "distance eirgp 90 190" changes AD of all external EIRGP routes.
Can anyone help ?
TIA
le
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