OSPF
OSPF is a link-state interior gateway protocol that builds a topology map and runs SPF to select paths, organized into areas. ENCOR covers configuring OSPFv2/v3 with multiple areas, summarization, and network types.
All 350-401 Terms
SD-Access
SD-Access is Cisco's intent-based campus fabric that uses LISP for control, VXLAN for the data plane, and Cisco TrustSec for policy.
SD-WAN
SD-WAN (Cisco Catalyst SD-WAN) is an overlay WAN architecture that separates control and data planes to centrally manage transport-independent connectivity.
VXLAN
VXLAN is a MAC-in-UDP encapsulation that extends Layer 2 segments over a Layer 3 network using a 24-bit VNID for scale.
LISP
LISP (Locator/ID Separation Protocol) separates endpoint identity (EID) from location (RLOC) so the fabric can map and forward traffic dynamically.
OSPF
OSPF is a link-state interior gateway protocol that builds a topology map and runs SPF to select paths, organized into areas.
EIGRP
EIGRP is Cisco's advanced distance-vector routing protocol that uses DUAL for loop-free path selection and composite metrics.
eBGP
External BGP (eBGP) exchanges routing information between different autonomous systems using a path-vector best-path algorithm.
Spanning Tree Protocol
Spanning Tree Protocol (STP) prevents Layer 2 loops by blocking redundant paths, with RSTP and MST as modern variants.
EtherChannel
EtherChannel bundles multiple physical links into one logical link for bandwidth and redundancy, negotiated with LACP or PAgP.
QoS
Quality of Service (QoS) classifies, marks, queues, and polices traffic so latency-sensitive applications get priority.
NetFlow
NetFlow and Flexible NetFlow export metadata about IP flows for visibility, capacity planning, and security analysis.
Catalyst Center
Cisco Catalyst Center (formerly DNA Center) is the controller for automating, monitoring, and assuring enterprise networks, increasingly with AI-driven insights.
RESTCONF
RESTCONF is an HTTP-based protocol that exposes YANG-modeled configuration and state data as REST resources.
YANG
YANG is a data modeling language that defines the structure of configuration and state data used by NETCONF and RESTCONF.
EEM
Embedded Event Manager (EEM) is a Cisco IOS subsystem that runs applets or scripts automatically in response to defined events.