Overview
A detailed study of BGP and core MPLS, from the basics of how it works through to advanced issues such as route reflectors, policy, filtering, route selection and routing registries. Practical hands on with Cisco routers follow the major sessions to reinforce the theory. Juniper configurations are also explored in the theory sessions.
Delegates will learn how to
By the end of the course delegates will be able to:
- Connect enterprises to the Internet, and ISPs to each other.
- Describe how BGP works. List, describe and configure the main BGP attributes.
- Implement and troubleshoot BGP.
- Work with route aggregation and calculate CIDR prefixes in seconds.
- Influence traffic paths with BGP.
- Implement and troubleshoot MPLS.
Outline
Basic BGP
IGPs, EGPs, What’s BGP? BGP RIB, in/out process, tables peers, adding routes.
Hands on Simple configuration and troubleshooting.
The Internet and peering
ASs, AS numbers, Internet structure, ISP types, ISP network design, IXs, peering vs. transit, public/private peering, bi/multi-lateral peering.
How BGP works
Incremental updates, Path vector protocols, BGP protocol stack, the BGP header, message types, NLRI, withdrawn routes, route refresh, route dampening.
Hands on More troubleshooting, packet analysis.
MBGP
Multiprotocol routing, AFI, SAFI, MBGP and multicasts, IPv6, MPLS VPNs.
Hands on IPv6
BGPv4 aggregation
CIDR, benefits, techniques, shortcuts, configuring BGP aggregation, leaking routes.
Hands on Reducing routing table size.
BGP path selection
BGP attributes, attribute types, route selection order, Local preference, AS prepend, MEDs.
Hands on Influencing traffic with BGP.
BGP routing policies
What is policy? Examples, route filtering, AS filtering, REs, applying preference selectively, peer groups.
Hands on Sophisticated policies.
RIPE and routing registries
RIRs, Allocations, assignments, PI vs. PA. Objects, RPSL, whois, routing registry, IRRToolSet.
Hands on The RIPE database.
Automating BGP configuration
Automation tools, Bogon lists, tracking bogon lists, HTTP, Peering, routing registries, DNS.
Communities
What is a community? Community names, communities for: peer types and geography. RFC 1998, default communities.
Hands on Setting local preference on other routers.
Route servers
What are route servers? LINX route servers, route server policy control, What are route collectors, Looking glasses.
Hands on Setting up and working with a route server.
Peer relationships
IBGP, EBGP, next hop self, advertising routes into/out of BGP, synchronisation.
Hands on IBGP, troubleshooting a large BGP network.
Route reflectors and confederations
Full mesh IBGP, Route reflectors, RR configuration and design, confederations, migration issues.
Hands on RR configuration.
BGP architectures
Stub vs. transit AS, when to use BGP, multihoming strategies and issues, default routes. Multihop EBGP, load balancing.
Hands on Multihoming.
BGP security
RFC 7454, security steps, BGP TTL security, filters, RPKI, ROAs, rsync, rrdp, validators. A secure BGP template.
Hands on RPKI prefix validation.
Frequently asked questions
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Find more answers to frequently asked questions in our FAQs: Bookings & Cancellations page.
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When will I receive my certificate?
Certificates of Achievement are issued at the end the course, either as a hard copy or via email. Read more here.