Thanks Rick.  That helps a lot.

Ken
________________________________
From: Rick Mur [[email protected]]
Sent: Saturday, September 19, 2009 7:57 AM
To: Hagen, Ken
Cc: [email protected]
Subject: Re: [OSL | CCIE_RS] ip default-network

You do not have 2 default routes in your routing table. One is just pointing to 
a 10/8 which looks like an auto-summary of EIGRP (default on) and with ip 
default-network configured to 10.0.0.0. That way the  route to 10/8 is also 
valid as 'default-network' not to be mistaken with 'default-gateway'.

Sure you can get 2 default routes, but not through different protocols, you 
need to get 2 default routes advertised through the same protocol with the same 
cost/metric.


--

Regards,

Rick Mur
CCIE2 #21946 (R&S / Service Provider)
Sr. Support Engineer – IPexpert, Inc.
URL: http://www.IPexpert.com


On Fri, Sep 18, 2009 at 11:27 PM, Hagen, Ken 
<[email protected]<mailto:[email protected]>> wrote:





I'm pounding my head on this one. Maybe someone can help me. I working on ip 
default-network, and in the book the routes are like this:

Code View: Scroll / Show All

Corinth#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
U - per-user static route
Gateway of last resort is 172.16.3.1 to network 10.0.0.0
D* 10.0.0.0/8<http://10.0.0.0/8> [90/2195456] via 172.16.3.1, 00:02:32, 
Ethernet0
172.16.0.0/16<http://172.16.0.0/16> is subnetted, 6 subnets
C 172.16.4.0 is directly connected, Ethernet1
C 172.16.5.0 is directly connected, Serial0

D 172.16.1.0 [90/1811456] via 172.16.3.1, 00:00:17, Ethernet0
D 172.16.6.0 [90/921600] via 172.16.3.1, 00:00:16, Ethernet0
D 172.16.2.0 [90/793600] via 172.16.3.1, 00:00:16, Ethernet0
C 172.16.3.0 is directly connected, Ethernet0
R* 0.0.0.0/0<http://0.0.0.0/0> [120/1] via 172.16.3.1, 00:00:17, Serial0



I have never had two default network statements like this in a route table. I 
have rip and eigrp configured on the routers and ip default-network configured, 
but I do not get these results. If I configure rip I can get the default 
network for rip, and when I configure eigrp I can get the default network for 
eigrp, but with both, I only get the default network for eigrp, which is what I 
expect because eigrp has the lower administrative distance. Is it possible to 
have both default networks in the routing table as this shows? Anyone have any 
ideas on what I'm doing wrong? What am I missing here?



Ken Hagen CCNP
Department of Information Technology
City of Seattle

W: (206) 386-1503
C: (206) 255-8391

E: [email protected]<mailto:[email protected]>



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For more information regarding industry leading CCIE Lab training, please visit 
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_______________________________________________
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