Junos Routing Policy That Scales: Policy-Statement Patterns and Safe Defaults
Design maintainable Junos routing policies. Covers policy-statement structure, community naming, prefix-lists, and safe defaults that prevent routing disasters.
#bgp
14 posts tagged with "bgp"
FlowSpec: Programmable Filters via BGP
Understand BGP FlowSpec for traffic filtering. Covers FlowSpec rules, BGP distribution, rate limiting, and why FlowSpec enables network-wide filtering from a single point.
RTBH: Remote Triggered Blackhole Routing
Implement RTBH on VyOS for DDoS mitigation. Covers blackhole routing, BGP communities, triggering procedures, and why RTBH sacrifices the target to save the network.
Dynamic Routing Over Tunnels: BGP and OSPF Through Encrypted Links
Run routing protocols over VPN tunnels on VyOS. Covers OSPF over GRE/IPsec, BGP over WireGuard, tunnel interface selection, and why routing over tunnels requires careful planning.
EVPN: Modern Control Plane for L2 and L3 Services
Understand EVPN architecture and concepts. Covers EVPN route types, MAC/IP learning via BGP, multi-homing, VXLAN integration, and why EVPN is the future of overlay networking.
L3VPN: MPLS VPN for Multi-Site Connectivity
Configure MPLS L3VPN on VyOS. Covers VPNv4 address family, route distinguishers, route targets, PE-CE routing, and why L3VPN provides scalable multi-tenant connectivity.
BGP-LU: Labeled Unicast for Scalable MPLS Networks
Configure BGP Labeled Unicast on VyOS. Covers label distribution via BGP, inter-AS MPLS, seamless MPLS concepts, and why BGP-LU replaces LDP in modern designs.
BGP Dampening: Suppressing Route Flapping
Configure BGP route dampening on VyOS. Covers dampening parameters, penalty calculation, route suppression, reuse thresholds, and why dampening prevents unstable routes from destabilizing your network.
ECMP and Multipath: Load Balancing at the Routing Layer
Configure ECMP on VyOS for route-level load balancing. Covers equal-cost paths, multipath BGP, hash algorithms, troubleshooting uneven distribution, and why ECMP is simple but requires understanding.
BGP Communities: Signaling Intent Across Networks
Master BGP communities on VyOS. Covers standard, extended, and large communities, common use cases, community-based filtering, and why communities are the language networks speak.
Graceful Restart: Maintaining Forwarding During Protocol Restarts
Configure OSPF and BGP graceful restart on VyOS. Covers GR mechanics, helper mode, restart timers, and why graceful restart prevents traffic loss during maintenance.
BFD: Fast Failover Detection for Routing Protocols
Implement BFD on VyOS for sub-second failure detection. Covers BFD timers, integration with BGP and OSPF, multihop BFD, and why routing protocol keepalives are too slow.
RPKI/IRR Filtering Strategy: Practical, Not Academic
Real-world BGP route validation using RPKI and IRR on VyOS. Covers validator setup, policy storage, prefix validation workflow, and why filtering is a process, not a single configuration.
BGP on VyOS: Filters Are Not Optional
BGP fundamentals on VyOS using FRR. Covers eBGP/iBGP setup, prefix-lists, route-maps, communities, max-prefix protection, and why BGP without filtering is an incident waiting to happen.