thanks Tyson.
I'm still fighting with this here are the routing tables:
PE1 (R8 - 15.8.8.8):
> 10.0.0.0/8 is variably subnetted, 12 subnets, 2 masks
B 10.2.23.0/24 [200/512002560] via 15.9.9.9, 00:06:33
C 10.2.28.0/24 is directly connected, FastEthernet0/0.28
L 10.2.28.8/32 is directly connected, FastEthernet0/0.28
B 10.2.39.0/24 [200/0] via 15.9.9.9, 00:06:33
D 10.2.100.0/24 [90/156160] via 10.2.28.2, 00:07:28,
> FastEthernet0/0.28
D 10.2.101.0/24 [90/156160] via 10.2.28.2, 00:07:28,
> FastEthernet0/0.28
D 10.2.102.0/24 [90/156160] via 10.2.28.2, 00:07:29,
> FastEthernet0/0.28
D 10.2.103.0/24 [90/156160] via 10.2.28.2, 00:07:29,
> FastEthernet0/0.28
B 10.2.104.0/24 [200/156160] via 15.9.9.9, 00:06:34
B 10.2.105.0/24 [200/156160] via 15.9.9.9, 00:06:34
B 10.2.106.0/24 [200/156160] via 15.9.9.9, 00:06:35
B 10.2.107.0/24 [200/156160] via 15.9.9.9, 00:06:35
PE1 looks good, to get to the loopbacks on CE2 it will go through the MPLS
network
PE2 (R9 - 15.9.9.9):
> 10.0.0.0/24 is subnetted, 11 subnets
B 10.2.28.0 [200/0] via 15.8.8.8, 00:05:49
D 10.2.23.0 [90/512002560] via 10.2.39.3, 00:13:49, FastEthernet0/0.39
C 10.2.39.0 is directly connected, FastEthernet0/0.39
D 10.2.104.0 [90/156160] via 10.2.39.3, 00:15:24, FastEthernet0/0.39
D 10.2.105.0 [90/156160] via 10.2.39.3, 00:15:24, FastEthernet0/0.39
D 10.2.106.0 [90/156160] via 10.2.39.3, 00:15:24, FastEthernet0/0.39
D 10.2.107.0 [90/156160] via 10.2.39.3, 00:15:25, FastEthernet0/0.39
B 10.2.100.0 [200/156160] via 15.8.8.8, 00:05:50
B 10.2.101.0 [200/156160] via 15.8.8.8, 00:05:50
B 10.2.102.0 [200/156160] via 15.8.8.8, 00:05:50
B 10.2.103.0 [200/156160] via 15.8.8.8, 00:05:51
PE2 also looks good, we will use the VPN link for the loopbacks for CE1
However on (BB2 - CE1) we have e0/0 facing PE1 and e0/1 facing CE2. Here is
the routing table:
10.0.0.0/24 is subnetted, 11 subnets
C 10.2.28.0 is directly connected, Ethernet0/0
C 10.2.23.0 is directly connected, Ethernet0/1
D 10.2.39.0 [90/4096025600] via 10.2.23.3, 00:00:14, Ethernet0/1
D 10.2.104.0 [90/4096128000] via 10.2.23.3, 00:00:14, Ethernet0/1
D 10.2.105.0 [90/4096128000] via 10.2.23.3, 00:00:14, Ethernet0/1
D 10.2.106.0 [90/4096128000] via 10.2.23.3, 00:00:14, Ethernet0/1
D 10.2.107.0 [90/4096128000] via 10.2.23.3, 00:00:14, Ethernet0/1
C 10.2.100.0 is directly connected, Loopback100
C 10.2.101.0 is directly connected, Loopback101
C 10.2.102.0 is directly connected, Loopback102
C 10.2.103.0 is directly connected, Loopback103
It wants to go to CE2 (BB3) to get to the loopbacks instead of up through
the VPN
Same thing on CE2 (BB3) :
10.0.0.0/24 is subnetted, 11 subnets
D 10.2.28.0 [90/4096025600] via 10.2.23.2, 00:03:17, Ethernet0/1
C 10.2.23.0 is directly connected, Ethernet0/1
C 10.2.39.0 is directly connected, Ethernet0/0
C 10.2.104.0 is directly connected, Loopback104
C 10.2.105.0 is directly connected, Loopback105
C 10.2.106.0 is directly connected, Loopback106
C 10.2.107.0 is directly connected, Loopback107
D 10.2.100.0 [90/4096128000] via 10.2.23.2, 00:03:18, Ethernet0/1
D 10.2.101.0 [90/4096128000] via 10.2.23.2, 00:03:18, Ethernet0/1
D 10.2.102.0 [90/4096128000] via 10.2.23.2, 00:03:18, Ethernet0/1
D 10.2.103.0 [90/4096128000] via 10.2.23.2, 00:03:18, Ethernet0/1
It wants to use the backdoor link as well to get to CE1's loopback
addressess. Here is what I configured on the e0/1 interfaces on the CE
routers:
interface Ethernet0/1
bandwidth 10
ip address 10.2.23.2 255.255.255.0
no ip directed-broadcast
delay 15000000
If I tweak these anymore the routes don't get put in the routing table...
On Thu, Oct 7, 2010 at 7:39 AM, Tyson Scott <[email protected]> wrote:
> increase the metric for the routes learned via the backdoor link. Start
> by decreasing the bandwidth and increasing the delay on the interfaces.
>
>
>
> Regards,
>
>
>
> Tyson Scott - CCIE #13513 R&S, Security, and SP
>
> Managing Partner / Sr. Instructor - IPexpert, Inc.
>
> Mailto: [email protected]
>
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> *From:* [email protected] [mailto:
> [email protected]] *On Behalf Of *matt reath
> *Sent:* Thursday, October 07, 2010 7:49 AM
> *To:* ccie_sp
> *Subject:* [OSL | CCIE_SP] Multi-homed EIGRP MPLS VPN
>
>
>
> I've attached a quick diagram of what the network I'm working on looks
> like. EIGRP is configured between the CE devices and between the PE - CE
> links. The routers prefer the backdoor for everything when the L3VPN is
> working. How do I get this to prefer the the VPN link instead of the
> backdoor link? I've read through a dozen or so documents and its unclear.
> It seems like we can use the pre-bestpath cost extended community but what
> if the both of the routers don't support it?
>
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