Juniper EVPN/VXLAN mesh or ring

EVPN/VXLAN with Juniper QFX switches provides a scalable and efficient network solution. EVPN uses BGP to share MAC and IP info, while VXLAN enables Layer 2 connectivity over Layer 3. Juniper QFX switches, like the QFX5120 and QFX5220, support VXLAN in hardware for high performance and smooth multi-tenancy. This setup improves flexibility, simplifies management, and supports data center interconnects.

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Quick fixes for Juniper problems

In Junos, the clear command is a useful tool for resetting, refreshing, or clearing various system states, statistics, and counters. It helps network administrators troubleshoot issues by removing outdated data and ensuring real-time accuracy in monitoring. This command is essential for maintaining optimal network performance, allowing for quick recovery from anomalies and ensuring that devices operate with the most up-to-date information. By using it effectively, administrators can streamline diagnostics, enhance visibility, and improve overall system reliability.

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Verschiedene OSS VPNs

Es gibt verschiedene offene und Open-Source VPN-Protokolle und Tunneltechnologien, die auch unterschiedliche Eigenschaften, Sicherheit und Einsatzzwecke haben. Ich beschreibe hier die Unterschiede zwischen OpenVPN (mit CA und static keys), WireGuard, IPsec, OpenConnect (SSL VPN), PPtP, IPsec über L2TP usw. sowie L2TP, IPIP und GRE (alles Tunnel) halbwegs detailiert um eine grobe Übersicht der Möglichkeiten zu haben.

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