Nokia BGP for Internet Routing study guide
Nokia BGP for Internet Routing · Work through your exam, one topic at a time.
The Nokia BGP for Internet Routing exam validates practical command of BGP as deployed on Nokia Service Router platforms and in internet-scale routing. It suits network engineers, service-provider operations staff, and design or escalation engineers who already understand IP routing and now need to prove they can build sessions, steer traffic with policy, scale an autonomous system, and defend the routing table. The Nokia BGP for Internet Routing study guide has 9 sections and about 3,316 words.
01BGP Fundamentals and Protocol Operation
This domain tests whether you understand BGP as a path-vector protocol carried over TCP, its message types, the finite state machine, and how the well-known path attributes drive loop prevention and decision-making. SR OS questions here usually ask which attribute caused a route to be rejected, or which FSM state a stuck session is sitting in.
406 words, about 2 min02BGP Session Establishment and Neighbor Configuration
This domain covers bringing a session up and keeping it up: SR OS group and neighbor configuration, eBGP versus iBGP parameters, loopback peering, timers, authentication and the knobs that must match on both sides. In SR OS a BGP session is always configured under a group, and the group supplies defaults.
370 words, about 2 min03Route Selection and Best-Path Decision Process
This domain tests the tie-break ladder BGP applies when several routes to one prefix are valid, and how SR OS reports the outcome. A route must first be valid: next hop resolvable, AS PATH loop-free, accepted by policy.
370 words, about 2 min04BGP Attributes and Policy Control
This domain tests the attributes you can manipulate and the SR OS route-policy mechanics used to set, match and propagate them. LOCAL PREF is a 32-bit value, higher is better, exchanged only between iBGP speakers - it is never sent to an eBGP peer.
342 words, about 2 min05Scaling and Convergence (Route Reflectors, Confederations, Timers)
This domain tests the mechanisms that let iBGP scale past a full mesh and the timers that govern how fast the network converges. iBGP split horizon means every speaker needs a session with every other speaker: N(N-1)/2 sessions.
369 words, about 2 min06Internet Multihoming and Traffic Engineering
This domain tests how an AS connects to more than one upstream and uses BGP attributes - not IGP metrics - to steer traffic in each direction. Outbound traffic (you sending) follows your own best-path selection, so LOCAL PREF and local policy decide it.
359 words, about 2 min07BGP Security and Route Filtering
This domain tests the controls that stop a peer from sending you a default route, a full table or someone else's prefix, plus the validation frameworks layered on top. Prefix limits: prefix-limit under the neighbor with a threshold percentage for logging and an idle-timeout to hold the session down after a breach.
342 words, about 2 min08IPv6 and Address-Family Support in BGP
This domain tests MP-BGP (RFC 4760) and the SR OS family configuration that enables IPv6 NLRI exchange. Classic BGP-4 carried only IPv4 unicast.
350 words, about 2 min09Nokia SR OS BGP Implementation and Troubleshooting
This domain tests whether you can configure SR OS BGP with MD-CLI or classic CLI and diagnose a session or route problem with the right command instead of guessing. BGP configuration hangs off configure router bgp within the router instance, with groups, neighbors, families and policy references; route policy lives under configure router policy-options .
408 words, about 2 min