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#JANOG

  • Published February 13, 2026Network

    JANOG57 NETCON Walkthrough (Level 3-2): DNS and CDN Caching

    Configure BIND records and Varnish VCL for origin authentication, cached homepage responses, and cache bypass for a dynamic page and the browser.

    • #JANOG
  • Published January 19, 2024Network

    JANOG53 NETCON Walkthrough (Level 4-2): iBGP and LVS

    Restore redundant connectivity with iBGP and ECMP on SONiC and cEOS, then configure LVS persistence so authentication connections reach the same server.

    • #JANOG
  • Published February 3, 2023Network

    JANOG51 NETCON Walkthrough (Level 1-1): VLANs and Trunk Ports

    Restore connectivity for VLANs 1 and 10 by identifying an access-mode link between two switches and configuring trunk ports.

    • #JANOG
  • Published February 3, 2023Network

    JANOG51 NETCON Walkthrough (Level 1-4): Troubleshooting RIP

    Combine static routes and RIP redistribution to restore connectivity from Osaka-B, including its loopback interface, to Tokyo-A.

    • #JANOG
  • Updated February 3, 2023Network

    JANOG50 NETCON Walkthrough (Level 3-4): BGP over IPsec

    Troubleshoot an IKEv2 proposal mismatch and recursive routing that causes a BGP-over-IPsec tunnel to flap, using only the local router.

    • #JANOG

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