Re: Dual DMVPN cloud with 1 hub terminating two tunnels, equal

Jeremy-

In the config below, R5 has 2 parallel paths over 2 tunnel interfaces to 1.1.1.0
On R5, by increasing the delay on Tun2, it then is not used to reach 1.1.1.0

Are you using the default K values in EIGRP?

R5#show ip route ei

     1.0.0.0/24 is subnetted, 1 subnets

D 1.1.1.0 [90/297372416] via 172.16.15.1, 00:05:52, Tunnel1

                [90/297372416] via 10.15.2.1, 00:05:52, Tunnel2

R5#conf t

Enter configuration commands, one per line. End with CNTL/Z.

R5(config)#int tun 2

R5(config-if)#delay 500001

R5(config-if)#end

R5#

01:44:47: %SYS-5-CONFIG_I: Configured from console by console

R5#

01:44:53: RT: delete route to 1.1.1.0 via 10.15.2.1, eigrp metric [90/297372416]

01:44:53: RT: NET-RED 1.1.1.0/24

R5#show ip route ei

     1.0.0.0/24 is subnetted, 1 subnets

D 1.1.1.0 [90/297372416] via 172.16.15.1, 00:00:08, Tunnel1

R5#

Keith H. Barker, CCIE #6783
Instructor
kbarker_at_ine.com
Internetwork Expert, Inc.
http://ine.com
Toll Free: 877-224-8987
Outside US: 775-826-4344

On Nov 24, 2009, at 9:48 PM, jeremy co wrote:

> Hi Dale,
>
>
>
>
> R2 (spoke that injected some eigrp routes)
> R7 hub
> R6 spoke that I see routing table of it that gets route from spoke R2.
>
> I already changed bandwidth on R6 and R2 spokes. but nothing would have
> changed.
>
> I still have equal path in routing table.
>
> Cheers,
>
>
>
> On Wed, Nov 25, 2009 at 4:20 PM, Dale Shaw <dale.shaw_at_gmail.com> wrote:
>
>> Hi Jeremy,
>>
>> On Wed, Nov 25, 2009 at 4:06 PM, jeremy co <jeremy.cool14_at_gmail.com>
>> wrote:
>>>
>>> I ran Dual DMVPN cloud with 1 hub terminating two tunnels
>>> topology;everything works fine except after changing BW on tunnel
>> interfaces
>>> ,still I have equal cost path problem on spoke, so I got two path toward
>>> destinations from spoke to another spoke.
>> [...]
>>>
>>> why changing bw didn't affect IGP metric ?
>>
>> EIGRP metrics are calculated based on the values used on the outgoing
>> interfaces towards the destination, and the composite metric is
>> calculated separately in each direction.
>>
>> If you want the spoke to prefer the path via one tunnel over another,
>> you'll need to manipulate the metrics on the spoke's tunnels.
>>
>> On the spoke:
>>
>> interface Tunnel0
>> delay 1000
>> !
>> interface Tunnel1
>> delay 2000
>>
>> Cheers,
>> Dale
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Wed Nov 25 2009 - 13:40:18 ART