Dual DMVPN cloud with 1 hub terminating two tunnels, equal cost

From: jeremy co <jeremy.cool14_at_gmail.com>
Date: Wed, 25 Nov 2009 16:06:45 +1100

Hi,

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.

Hub:

interface Tunnel0
 bandwidth 1000
 ip address 200.0.0.7 255.255.255.0
 no ip redirects
 no ip next-hop-self eigrp 101
 ip nhrp map multicast dynamic
 ip nhrp network-id 127
 no ip split-horizon eigrp 101
 no ip split-horizon
 tunnel source Loopback0
 tunnel mode gre multipoint

interface Tunnel1
 bandwidth 10
 ip address 201.0.0.7 255.255.255.0
 no ip redirects
 no ip next-hop-self eigrp 101
 ip nhrp map multicast dynamic
 ip nhrp network-id 201
 no ip split-horizon eigrp 101
 no ip split-horizon
 tunnel source Loopback1
 tunnel mode gre multipoint

Spoke :

interface Tunnel1 ip address 201.0.0.6 255.255.255.0 no ip redirects ip nhrp
map multicast dynamic ip nhrp map 201.0.0.7 7.7.7.71 ip nhrp map multicast
7.7.7.71 ip nhrp network-id 201 ip nhrp nhs 201.0.0.7 tunnel source
Loopback1 tunnel mode gre multipoint interface Tunnel0 ip address 200.0.0.6
255.255.255.0 no ip redirects ip nhrp map multicast dynamic ip nhrp map
200.0.0.7 7.7.7.7 ip nhrp map multicast 7.7.7.7 ip nhrp network-id 127 ip
nhrp nhs 200.0.0.7 tunnel source Loopback0 tunnel mode gre multipoint

routing table on spoke :

Rack1R6#sh ip route ei 142.4.0.0/24 is subnetted, 1 subnets D EX 142.4.64.0
[170/2585600256] via 201.0.0.7, 00:19:09, Tunnel1 [170/2585600256] via
200.0.0.7, 00:19:09, Tunnel0 10.0.0.0/24 is subnetted, 3 subnets D EX
10.0.23.0 [170/2585600256] via 201.0.0.7, 00:40:52, Tunnel1 [170/2585600256]
via 200.0.0.2, 00:40:52, Tunnel0 D EX 10.0.35.0 [170/2585600256] via
201.0.0.7, 00:19:09, Tunnel1 [170/2585600256] via 200.0.0.7, 00:19:09,
Tunnel0

why changing bw didn't affect IGP metric ?

Regards,
Jeremy

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Received on Wed Nov 25 2009 - 16:06:45 ART

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