Hands-On Advanced Networking: BGP, MPLS, VPN Configuration & More
Explore advanced networking topics such as BGP hijacking, MPLS, MPLS-based VPNs, and segment routing in this comprehensive guide from the University of South Carolina. Learn about MPLS Layer 3 VPN configuration, lab topologies, and detailed configuration steps for setting up BGP instances. Verify BGP configurations for multiple instances and gain practical insights into networking protocols.
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Hands-on Advanced Networking Topics: BGP, BGP Hijacking, MPLS, MPLS-based VPNs, Segment Routing, and others Jorge Crichigno, Shahrin Sharif University of South Carolina http://ce.sc.edu/cyberinfra jcrichigno@cec.sc.edu, ssharif@email.sc.edu WASTC 2021 virtual Faculty Development Weeks (vFDW) June 17, 2021 1
MPLS Layer 3 VPN configuration 1. L. De Ghein, MPLS Fundamentals , Cisco Press, CCIE No. 1897, 2016. 3
Lab Topology h2 .10 h4 .10 The Organizations (org 1 and org 2) are connected to ISP, having overlapping IP addresses Campus routers are connected to the ISP through static routes h2-eth0 h4-eth0 Org 1 s2-eth2 Org 1 s4-eth2 s2 s4 192.168.1.0/24 s2-eth1 192.168.2.0/24 s4-eth1 Campus 1 r2-eth0 Campus 2 r4-eth0 r2 r4 r6 ISP r5 r7 BGP AS 100 r1 r3 r3-eth0 r1-eth0 Org 2 s3-eth1 s1-eth1 Org 2 s1 s3 192.168.1.0/24 s3-eth2 s1-eth2 192.168.2.0/24 h1-eth0 h3-eth0 Campus 1 Campus 2 h3 h1 .10 .10 4
Configuration steps h2 .10 h4 .10 Step 1 Run LDP within ISP routers Step 2 Create VRF for each organization in routers r5 and r7 Step 3 Create BGP peers between routers r5 and r7 Step 4 Advertise VPNv4 routes to the BGP peer h2-eth0 h4-eth0 Org 1 s2-eth2 Org 1 s4-eth2 s2 s4 192.168.1.0/24 s2-eth1 192.168.2.0/24 s4-eth1 Campus 1 r2-eth0 Campus 2 r4-eth0 r2 r4 r6 ISP r5 r7 BGP AS 100 r1 r3 r3-eth0 r1-eth0 Org 2 s3-eth1 s1-eth1 Org 2 s1 s3 192.168.1.0/24 s3-eth2 s1-eth2 192.168.2.0/24 h1-eth0 h3-eth0 Campus 1 Campus 2 h3 h1 .10 .10 5
Lab configuration h2 .10 h4 .10 Verify BGP configuration for instance org1 h2-eth0 h4-eth0 Org 1 s2-eth2 Org 1 s4-eth2 s2 s4 192.168.1.0/24 s2-eth1 192.168.2.0/24 s4-eth1 Campus 1 r2-eth0 Campus 2 r4-eth0 r2 r4 r6 ISP r5 r7 BGP AS 100 r1 r3 r3-eth0 r1-eth0 Org 2 s3-eth1 s1-eth1 Org 2 s1 s3 192.168.1.0/24 s3-eth2 s1-eth2 192.168.2.0/24 h1-eth0 h3-eth0 Campus 1 Campus 2 h3 h1 .10 .10 6
Lab configuration h2 .10 h4 .10 Verify BGP configuration for instance org2 h2-eth0 h4-eth0 Org 1 s2-eth2 Org 1 s4-eth2 s2 s4 192.168.1.0/24 s2-eth1 192.168.2.0/24 s4-eth1 Campus 1 r2-eth0 Campus 2 r4-eth0 r2 r4 r6 ISP r5 r7 BGP AS 100 r1 r3 r3-eth0 r1-eth0 Org 2 s3-eth1 s1-eth1 Org 2 s1 s3 192.168.1.0/24 s3-eth2 s1-eth2 192.168.2.0/24 h1-eth0 h3-eth0 Campus 1 Campus 2 h3 h1 .10 .10 7
Lab configuration h2 .10 h4 .10 Verify connectivity for org 1 h2-eth0 h4-eth0 Org 1 s2-eth2 Org 1 s4-eth2 s2 s4 192.168.1.0/24 s2-eth1 192.168.2.0/24 s4-eth1 Campus 1 r2-eth0 Campus 2 r4-eth0 r2 r4 r6 ISP r5 r7 BGP AS 100 r1 r3 r3-eth0 r1-eth0 Verify connectivity for org 2 Org 2 s3-eth1 s1-eth1 Org 2 s1 s3 192.168.1.0/24 s3-eth2 s1-eth2 192.168.2.0/24 h1-eth0 h3-eth0 Campus 1 Campus 2 h3 h1 .10 .10 8
