Articles by tag "BGP"

1. Should I add a license to the BGP protocol of C9300L?
   Selene Gong

   80
   For those deploying Cisco Catalyst 9300L switches, a common query arises regarding Border Gateway Protocol (BGP) functionality and its licensing requirements. Yes, to fully utilize BGP on a Cisco Catalyst 9300L switch, you need the Network Advantage license. This license is crucial for enabling ...
2. Designing Robust BGP Failure Detection: Hold Timers vs BFD
   Selene Gong

   28
   Fast failure detection in BGP is not about choosing the lowest possible timer. It is about achieving predictable convergence without destabilizing the control plane. In ISP backbones, enterprise WAN cores, and EVPN data center fabrics, the real design question is whether to tune BGP keepalive ...
3. When to Touch OSPF and BGP in Enterprise Networks: Change Frequency, Risk, and Design Implications
   Selene Gong

   36
   In enterprise networks, OSPF (Open Shortest Path First) and BGP (Border Gateway Protocol) are the backbone Layer 3 routing protocols that ensure efficient data forwarding and connectivity. Because these protocols are inherently stable, many network administrators adopt a "set it and forget it" ...
4. FortiGate Default Route Design for BGP and IPsec PBR: Best Practices for Stable Internet and VPN Traffic
   Selene Gong

   34
   Balancing FortiGate default routes across multiple ISPs and IPsec tunnels is a common challenge for enterprise network administrators. Misconfigurations can lead to traffic outages, failed VPNs, and asymmetric routing. This guide merges practical troubleshooting tips with advanced BGP and PBR ...