LINX 3

Description

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.

A multiple choice exam, leading to the LAIT III certification, is available after the course. The exam consists of 60 questions and lasts 2 hours.

What will you learn

LINX 3 training course details

Network engineers.

LAIT I and II OR CCNP and take LAIT I and LAIT II exams whilst on this course.

5 days

IGPs, EGPs, What's BGP? BGP RIB, in/out process, tables peers, adding routes.
Hands on Simple configuration and troubleshooting.

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.

Incremental updates, Path vector protocols, BGP protocol stack, the BGP header, message types, NLRI, withdrawn routes, route refresh, route dampening.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.

Multiprotocol routing, AFI, SAFI, MBGP and multicasts, IPv6, MPLS VPNs.
Hands on IPv6

CIDR, benefits, techniques, shortcuts, configuring BGP aggregation, leaking routes.
Hands on Reducing routing table size.

BGP attributes, attribute types, route selection order, Local preference, AS prepend, MEDs.
Hands on Influencing traffic with BGP.

What is policy? Examples, route filtering, AS filtering, REs, applying preference selectively, peer groups.
Hands on Sophisticated policies.

RIRs, Allocations, assignments, PI vs. PA. Objects, RPSL, routing registry,
Hands on The RIPE database.

Automation tools, whois, IRRToolSet, Bogon lists, tracking bogon lists, HTTP, Peering, routing registries, DNS.

What is a community? Community names, communities for: peer types and geography. RFC 1998, default communities.
Hands on Setting local preference on other routers.

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.

IBGP, EBGP, next hop self, advertising routes into/out of BGP, synchronisation.
Hands on IBGP, troubleshooting a large BGP network.

Full mesh IBGP, Route reflectors, RR configuration and design, confederations, migration issues.
Hands on RR configuration.

Stub vs. transit AS, when to use BGP, multihoming strategies and issues, default routes. Multihop EBGP, load balancing.
Hands on Multihoming.

RFC 7454, security steps, BGP TTL security, filters, RPKI, ROAs, rsync, rrdp, validators. A secure BGP template.
Hands on RPKI prefix validation.