The purpose of this post is to cover basic OSPFv2 configuration steps and commands for Nokia SROS routers. Intended readers are engineers with basic OSPF knowledge who want to know how to configure OSPF on Alcatel-Lucent Service Routers (7750-SR, 7705-SR, 7210-SR).

All examples are valid for TiMOS-B-12.0.R8 software.

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When it comes to basic OSPF troubleshooting the first-aid kit is Neighbor states and things, that should match to form an adjacency. And on one early morning while refreshing my memory on OSPF neighbor states I accidentally ran into quite interesting problem.

But before we start, answer the short question:

Will adjacency be formed between directly connected via Gig. Ethernet interfaces routers R1 and R2 if

  • R1’s OSPF interface type configured as point-to-point
  • R2’s OSPF interface type configured as broadcast
  • Time’s up. The answer is – yes and no. Wanna know why? Jump in, I have to show you something.

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    Author's picture

    Roman Dodin

    Eagerness to learn & passion to share

    Netdevops @ Nuage Networks

    Russia