show ip eigrp topology 10.2.100.0/24
What is the output of that command? Are you redistributing BGP into EIGRP? Regards, Tyson Scott - CCIE #13513 R&S, Security, and SP Managing Partner / Sr. Instructor - IPexpert, Inc. Mailto: <mailto:[email protected]> [email protected] Telephone: +1.810.326.1444, ext. 208 Live Assistance, Please visit: <http://www.ipexpert.com/chat> www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at <http://www.ipexpert.com/communities> www.ipexpert.com/communities and our public website at <http://www.ipexpert.com/> www.ipexpert.com From: matt reath [mailto:[email protected]] Sent: Thursday, October 07, 2010 9:45 AM To: Tyson Scott Cc: ccie_sp Subject: Re: [OSL | CCIE_SP] Multi-homed EIGRP MPLS VPN 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] Telephone: +1.810.326.1444, ext. 208 Live Assistance, Please visit: www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at www.ipexpert.com/communities and our public website at www.ipexpert.com <http://www.ipexpert.com/> 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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