RE: Modifying AD for EIGRP external routes

From: MD (ccievision@yahoo.com)
Date: Sun Jul 04 2004 - 23:36:29 GMT-3

I tried using "distance eigrp 90 91 " command and it does maka the external AD to 91 but here is another problem now.
 
My objective was to test load balance 2 routes learned by internal EIGRP and external EIGRP by making the AD and metric same for both routes. After using the above command , I was able to make metric and AD same but now I see that router is not doing load balancing between 2 routes which have same metric and AD but instead prefer the internal Eigrp route.
 
As a workaround , I even tried getting the external route as internal route via different AS No. but then again the same problem. Router would not do load balancing even though the metrics and AD are same because it is learning routes from 2 different AS's.
 
So my question is- Can you achieve load balancing for a particular route learned from 2 different AS's and make the router shows both routes in the routing table.
 
 
 
thanks,
MD
 

Matt Hill <Matt.Hill@aapt.com.au> wrote:
Can you try running EIGRP in different ASes, with different ADs and
doing redistribution?

Matt 

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-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
ccievision@yahoo.com
Sent: Monday, 5 July 2004 4:17 AM
To: ccielab@groupstudy.com; security@groupstudy.com
Subject: Re: Modifying AD for EIGRP external routes

Thanks everyone for your input.

I will try changing the AD for all EIGRP routes and then modify AD again
at downstream routers to see if I can achieve my objective.

Any other suggestions would also be appreciated.

thanks,
MD
Richard Gallagher wrote:
It is possible to change the distance for external routes, but you
cannot
change it for specific prefixes:

http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_command_
reference_chapter09186a00801a807f.html#wp1075239

router(config-router)#distance eigrp 90 ?
<1-255> Distance for external routes

router(config-router)#distance eigrp 90 171 ?

HTH, Rich

----- Original Message ----- 
From: "MD" 
To: ; 
Sent: Sunday, July 04, 2004 10:56 AM
Subject: Modifying AD for EIGRP external routes

> Has anybody tested reducing the AD of external EIGRP routes from 170
to
some other value (say 91).
>
> I have tried the distance command under EIGRP but it changes the
distance
only for internal eigrp routes and not external eigrp routes.
>
> Here is the relevant configs...
>
>
> router eigrp 318
> redistribute eigrp 300 route-map 300to318
> offset-list 99 in 20 Serial0
> network 172.16.123.0 0.0.0.31
> neighbor 172.16.123.1 Serial0
> neighbor 172.16.123.4 Serial0
> distance 91 172.16.123.1 0.0.0.0 98
> distance 91 172.16.123.4 0.0.0.0 97
> no auto-summary
> !
>
> access-list 97 permit 10.2.4.0 0.0.3.255
> access-list 98 permit 172.16.15.0 0.0.0.15
>
>
> SH IP ROUTE
>
> D EX 172.16.15.0/28 [170/46738176] via 172.16.123.1, 00:00:07, Serial0
> D 10.2.4.0/22 [91/46251776] via 172.16.123.4, 00:25:30, Serial0
>
>
> FYI-- 172.16.123.1 is sending external EIGRP routes and 172.16.123.4
is
sending internal EIGRP routes and I am trying to make both these routee
to
show up with AD 91 in the routing table.
>
>
> thanks,
>
> MD
>
>
>
>
>
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