Nokia Lab | LAB 1 Basic |


Hi there!

I'm starting a series of notes focused on Nokia SR-OS labs. It's a part of my preparing for NRSII and SRA.

Some input points:
  • Labs contain: tasks and questions, topology, final configs, useful debug commands, and different tips;
  • It’s not a lab guide. it’s just my notes which may be useful for someone. I will try to give the right structure of labs and ask reasonable questions. But you can use them as a reference for your own labs. Change everything and have fun :)
  • I make more emphasis on structure and coverage than explanation and step-by-step configuration. In my opinion, step-by-step guides or Youtube tutorials are unuseful for exam preparing or learning something. It's looking like entertainment content. So I don't provide answers,  CLI outputs, debug outputs, traffic dumps. I'm sure you should try it yourself.
  • I use TiMOS-B-12.0.R6 (It’s temporary)

Topology example

Lab tasks and questions:
  • card provisioning
    • provision card and MDA
    • examine card and MDA status
    • examine card and MDA detail info
  • ports configuration
    • enable ports
      • examine ports status
    • What is a default port mode?
    • What’s a default port MTU for every port mode?
  • L3 interface configuration(ipv4 and ipv6)
    • create and configure p2p interfaces and configure “system” interface
      • check interface status
      • What should we configure for ipv6 supporting?
      • How do routers generate link-local addresses?
      • check connectivity between nodes
        • What's the difference between using ping for ipv4 and for ipv6?
    • create and configure several loopbacks on every router
      • check loopbacks status
  • static-route configuration
    • configure static-route toward neighbor's “system” interface (ipv4 and ipv6) on every router
      • examine route table
        • What’s the default route preference for static routes?
    • check connectivity between system’s address
  • float static-routes
    • configure float static-routes toward neighbor's “system” interface on every router
      • examine route table
      • shutdown primary path and check reachability between “system” interfaces
      • enable BFD on float static routes
        • check BFD session
        • What’s the main advantage of using BFD?
  • blackhole static-route
    • configure blackhole static route
      • examine route table
      • What are the main use cases for blackhole routes?
  • ECMP and static-routes
    • configure static-routes toward neighbor's “system” interface with default preference and enable ECMP (e.g. ecmp 2)
      • examine route table and FIB
        • How many entries for the target network do you see?
        • What are the main use cases of ECMP?

Final configuration

Github project

Useful debug commands

show card {detail}
show mda {detail}
show router interface
show router route-table
show router fib 1
show router bfd session


  1. Could benefit from

    1. Sure. I'm going to use (waiting new hardware for labs)


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