Overview
A detailed study of BGP, from the basics of how it works through to advanced issues such as route reflectors, policy, filtering, route selection and routing registries. The course culminates with a study of an industrial strength BGP template illustrating important issues such as bogon filtering. Practical hands on with routers follow the major sessions to reinforce the theory..
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 AS information gathering.
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.
Hands on AS information gathering.
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Incremental updates, Path vector protocols, BGP protocol stack, the BGP header, message types, NLRI, withdrawn routes, route refresh, route dampening.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 and IPv6
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 More troubleshooting, packet analysis.
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, routing registry,
Hands on The RIPE database.
Automating BGP configuration
Automation tools, whois, IRRToolSet, 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.
BGP path selection
BGP attributes, attribute types, route selection order, Local preference, AS prepend, MEDs.
Hands on Influencing traffic with BGP.
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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QA online courses, also commonly known as distance learning courses or elearning courses, take the form of interactive software designed for individual learning, but you will also have access to full support from our subject-matter experts for the duration of your course. When you book a QA online learning course you will receive immediate access to it through our e-learning platform and you can start to learn straight away, from any compatible device. Access to the online learning platform is valid for one year from the booking date.
All courses are built around case studies and presented in an engaging format, which includes storytelling elements, video, audio and humour. Every case study is supported by sample documents and a collection of Knowledge Nuggets that provide more in-depth detail on the wider processes.
When will I receive my joining instructions?
Joining instructions for QA courses are sent two weeks prior to the course start date, or immediately if the booking is confirmed within this timeframe. For course bookings made via QA but delivered by a third-party supplier, joining instructions are sent to attendees prior to the training course, but timescales vary depending on each supplier’s terms. Read more FAQs.
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.