Categories
Network Monitoring Infrastructure Visualization Routing Analysis OSPF Network Topology Network Engineering BGPStars
Forks
Watchers
Developer links
Topolograph
Before the maintenance window, know exactly where the traffic will go: Topolograph rebuilds your network the way its routing protocols see it and lets you break it safely on screen. Upload one router's LSDB output, from Cisco, Juniper, Arista, FRRouting, MikroTik, and a dozen other vendors, and the whole area's topology appears as an interactive graph, because the protocol already flooded it everywhere. Compute the shortest path between any two routers and see every equal-cost alternative with per-link loads, then fail a link or a node and watch SPF recalculate: which pairs moved to backup, which are left with none, and how the load shifted on every surviving link. Search the graph for prefixes, MAC addresses, or any network element, plan an MPLS TE path against real bandwidth attributes, and compare snapshots from different moments to answer what changed before the incident. Collectors can stream live OSPF, IS-IS, and BGP events over GRE, BGP-LS, or BMP so the timeline replays the network at the moment things broke, and a REST API, Python SDK, and MCP server let your own tooling and AI agents ask the same questions. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.
Benefits
- Rehearse Failures Before Maintenance
- Fail any link or node and SPF recalculates instantly, reporting changed paths, pairs moved to backup, unreachable pairs, and load shifts, so risky changes are reviewed before touching production.
- One Router's Output Maps The Area
- Because OSPF and IS-IS flood the same LSDB everywhere, one device's output from eighteen supported vendors reconstructs the whole topology offline, with no agents or SNMP polling.
- Find What Has No Backup
- Path analysis lists primary and equal-cost routes with load percentages and flags links whose failure leaves segments without any alternative, turning hidden resilience gaps into a fix list.
- Replay What Changed, When
- Collector events arrive timestamped on graph and timeline, and snapshots compare side by side, so incident reviews show the topology when a prefix vanished, not a reconstruction from logs.
Features
- Interactive Topology Graph
- A clickable graph of routers and links with costs and areas; find-on-graph search locates prefixes, MAC addresses, and elements, with data tables below.
- Path And ECMP Analysis
- Shortest-path computation shows every equal-cost alternative with per-link cost and traffic share, plus MPLS CSPF planning and BGP next-hop resolution to the IGP path.
- Failure Simulation
- Fail links or nodes, including shared-media segments, and see consequences: paths changed, moved to backup, unreachable pairs, and where traffic went.
- Multi-Vendor LSDB Import
- Documented upload commands for eighteen vendors including Cisco, Juniper, Arista, FRRouting, MikroTik, Fortinet, Huawei, and Nokia, via the UI or API.
- Collectors And Event Timeline
- Watcher agents join by GRE, BGP-LS, or BMP to stream OSPF, IS-IS, BGP, and EVPN changes; the timeline replays and diffs past states.
- API, SDK, And MCP Server
- A REST API with Swagger UI, a Python SDK, and an MCP server exposing events and failure calculation for scripts and AI agents.