Cisco BGP Masterclass for Enterprise Network Engineers

Install and use Cisco CML to run BGP lab exercises with real IOS behavior and debugging. Learn about lab downloads, startup-configs, topology diagrams, and alternatives like GNS3 or EVE-NG.

Install Cisco modeling labs on your laptop by enabling virtualization, installing VMware Workstation or Fusion, importing the CML OVA, mounting the ISO, configuring network and memory, and registering the license.

Learn to run course lab exercises in CML by downloading, extracting, importing the YAML project, starting labs, and managing devices with console and status checks.

Learn how route filtering differs from passive interfaces, apply inbound/outbound filters on interfaces and areas, and use ACLs or prefix lists with distribute lists in BGP.

Learn how to filter routes with ACLs and distribute lists in routing protocols, compare standard and extended ACLs, and apply to interfaces in IGPs and BGP.

Demonstrates configuring route filtering with access control lists and distribute lists in OSPF and EIGRP labs, covering inbound and outbound filtering, standard and extended ACL usage, and troubleshooting routing updates.

Master route filtering with prefix lists and distribute lists to overcome ACL limitations and achieve precise subnet matching across BGP and IGP.

demonstrates route filtering with prefix lists and distribute lists in eigrp, using a lab with loopbacks, testing inbound filters on r3, denying specific networks and ranges to refine routing tables.

Master route filtering with route maps, distribute lists, and ACLs or prefix lists. Apply top-down if-then logic for filtering, PBR, redistribution metrics, and BGP path selection.

Learn to configure route filtering with route maps and distribute lists in an EIGRP lab, using access lists and prefix lists to filter specific 10.x routes on R3, with verification.

Explore BGP and its difference from interior gateway protocols, learn to configure neighbors, advertise routes, and apply prefix lists, route maps, and AS path filtering for IPv6 routing.

Understand why BGP is essential for global internet routing, replacing IGPs with path-vector routing between autonomous systems to enable scalable, stable connectivity.

Learn how BGP route propagation and packet forwarding connect customer networks across service providers, using next hop and AS path to select best path, with loop prevention and policy-based routing.

This lecture explains when enterprises use BGP for internet connectivity, compares default static routes and BGP, and covers redundancy strategies, load considerations, and scenarios with multiple providers and MPLS VPNs.

Explore the characteristics of BGP—reliability, scalability, and stability—along with terms like BGP speaker, BGP peer, route aggregation, and AS numbers for internet routing.

Learn how to configure iBGP and eBGP neighbors, set router-id and neighbor statements, and maintain session stability with loopback update-source, full-mesh rules, and tcp 179.

Explore eBGP specifics, including TTL security, next-hop behavior, and AS path loop prevention. Learn to use loopback with eBGP multi-hop, next-hop-self, and the two-step BGP setup.

Learn how BGP adjacencies are established through open messages, negotiate version and security parameters, and monitor hold timer and keepalive, then verify with show ip BGP neighbors.

Discover how BGP advertises routes by forming explicit neighbor adjacencies, using separate neighbor and network commands, and advertising only the best path, verified with show ip bgp.

Demonstrates advertising routes in BGP across an enterprise and service provider topology, propagating 192.0.2.0/24 and 203.0.113.0/24 via iBGP and eBGP with next-hop self.

Learn how the BGP path selection works, including administrative distance, longest prefix match, and path attributes like weight, local preference, AS path, origin, and MED, plus eBGP vs iBGP influence.

Learn how the BGP AS path length determines the best route, how AS path prepending affects paths, and how to use show ip bgp to compare routes and prevent loops.

Explore the BGP origin code: i for IGP, ? for unknown or redistributed, and e for external EGP, and see how the originating router marks this in show ip bgp.

Apply BGP policy to influence outbound and inbound routes by adjusting weight, local preference, AS path length, and MED; configure route maps and trigger updates with route refresh.

Configure BGP weight on a C2 router to steer external routes via SP3, including show ip bgp, soft reset, and route-map with prefix-list.

Discover how BGP local preference guides outbound path selection across an AS by assigning higher values (default 100) to favor a top path, with iBGP scope and weight comparison.

Shows a lab demo of configuring BGP local preference to steer traffic via the bottom path, with selective policy for the 203 network using route maps and prefix lists.

Learn how BGP MED (multi exit discriminator) shapes inbound traffic by using metrics to prefer a link, via route-maps, and why MED only affects a single neighbor AS.

This demo shows configuring med on the c2 router to influence inbound traffic from AS 65001 for networks 203 and 198 via SP1B, then balances load across SP1A and SP1B.

Demonstrate how as path prepending in bgp lengthens route to influence inbound traffic across multiple providers, using C1A and C1B and SP1, SP2 to steer via the high bandwidth link.

as path prepending lab demo shows configuring as-path prepend to steer traffic to link, using route-maps and ip bgp across C1A, C1B, SP1B, SP2 for 192 and 198 networks.

Explore the basics of BGP route filtering, including outbound filtering best practices and available tools. Learn how AS path filters, ACLs, prefix lists, route maps, and communities shape policy.

Explore how to implement as path filtering using regular expressions, configure ACLs or prefix lists, apply route maps for BGP attributes, and verify results with show commands to control routes.

Learn to prevent transit by filtering BGP advertisements to only your own public networks. Explore ACLs, prefix lists, AS path filters, and inbound/outbound routing.

Configure BGP filtering to expose a subset of the internet routing table. Use ACLs and prefix lists, AS-path filters, and ORF for inbound or outbound control and default routes.

Apply BGP filtering to advertise only your own public networks using ACLs, prefix lists, and route maps, demonstrated in a lab with AS 65012 and 203.0.113.0/24.

Configure bgp as-path filtering in a lab to accept only as 65001 prefixes from sp1b and as 65002 prefixes from sp2, set default routes, and prevent transit.

Learn how BGP well-known communities tag routes to enforce filtering and path selection, including no-advertise, no-export, and local-as, plus confederations and send-community configurations.

Learn how private BGP communities tag routes to drive actions like local preference within and between ASes, with examples using 65001:1200 and configuration with route-maps, send-community, and verification.

Learn to configure BGP communities in a lab demo: prevent transit with the No-Export community and implement preferred path selection using a private community.

Learn how multi-protocol BGP uses AFI/SAFI address families to exchange IPv4 and IPv6 routes with separate sessions and best practices for neighbor activation.

configure bgp for ipv6 with address families, define ipv6 neighbors (iBGP and eBGP), enable update-source loopback 0, apply next-hop-self, and verify ipv6 network advertisement and policy.

Explore the four BGP path attribute categories—well-known mandatory, well-known discretionary, and optional transitive and non-transitive—and their examples like AS path, next hop, origin, MED, and community.