Blog

VRRP Explained: The Vendor-Neutral FHRP
FHRP

VRRP Explained: The Vendor-Neutral FHRP

VRRP (Virtual Router Redundancy Protocol, RFC 5798) is the vendor-neutral FHRP. How it works, master election, IP address owner trap, vs HSRP, Cisco IOS XE configuration, and tracking.
Cisco MPLS Configuration on IOS XE
MPLS

Cisco MPLS Configuration on IOS XE

Cisco MPLS configuration on IOS XE: enabling MPLS forwarding, LDP, LDP-IGP sync, VRFs for L3VPN, and MP-BGP between PEs. With a complete PE config example.
MPLS L3VPN with MP-BGP and VPNv4
MPLS

MPLS L3VPN with MP-BGP and VPNv4

MPLS L3VPN architecture: VRFs, Route Distinguishers, Route Targets, MP-BGP for VPNv4, the two-label stack, PE-CE routing, and the Cisco IOS XE configuration.
LDP and MPLS Label Distribution
MPLS

LDP and MPLS Label Distribution

LDP (Label Distribution Protocol) distributes MPLS labels across the network. Discovery, session establishment, distribution and retention modes, LDP-IGP sync, and Cisco IOS XE configuration.
EIGRP Stub Routing for Hub-and-Spoke
EIGRP

EIGRP Stub Routing for Hub-and-Spoke

EIGRP stub routing makes hub-and-spoke topologies scale. The five stub options, query suppression, DMVPN integration, and the production patterns for branch deployments.
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