Glossary · Network and IT fundamentals
OSPF (Open Shortest Path First)
A link-state routing protocol used inside an organization’s network: routers exchange link information, form neighbor adjacencies and compute the shortest path to every destination.
In REAP
OSPF neighbor state (FULL, DOWN, EXSTART and the rest) is standard evidence in an investigation: a neighbor that never changed state rules out the link, as in the Investigation Window on the home page.
Related terms
More in network and IT fundamentals
- ACL (access control list)
- Active/standby (high availability pair)
- API (application programming interface)
- Availability zone (AZ)
- BGP (Border Gateway Protocol)
- Change window and maintenance window
- CLI (command-line interface)
- Cloud controller
- Cloud network constructs
- CMDB (configuration management database)
- CRC errors
- DHCP and DHCP relay
- DNS
- ERP and MES
- Escalation
- EVPN and VXLAN (overlay fabrics)
- Firewall
- Firmware and software upgrade
- Flow records (NetFlow, IPFIX)
- HSRP and VRRP (first-hop redundancy)
- Hybrid cloud
- Interface counters
- ITSM
- Kubernetes
- Leaf-spine fabric
- LLDP and CDP (neighbor discovery)
- Method of procedure (MOP)
- MLAG and MC-LAG (multi-chassis link aggregation)
- Monitoring and NMS
- MTU (maximum transmission unit)
- NAT (network address translation)
- Network operating system (NOS)
- NOC (network operations center)
- NTP (network time)
- Object group
- On-call
- Operational technology (OT)
- Outage and degradation
- Path trace
- Port-channel (link aggregation, LACP)
- Postmortem
- Pre-check and post-check
- Priority and severity (P1 to P4)
- QoS (quality of service)
- Reachability probe
- RPO and RTO
- Running and startup configuration
- SD-WAN
- Security advisory (PSIRT)
- SNMP
- Spanning tree (STP)
- SSH
- Standard operating procedure (SOP)
- Streaming telemetry
- Syslog
- Vendor TAC case
- VLAN (virtual LAN)
- VPN
- VTY lines
Bring us your last P1.
Keep the root cause to yourself; in a 30-minute session we walk through how REAP would have investigated it, evidence first. The replay on your own network happens inside the proof of value.