Z·05Open Source
Zilk Multicast Analyzer
Multicast troubleshooting from the endpoint — no router credentials needed.
A client-first diagnostic tool for multicast issues in enterprise and MPLS networks. It runs on the operator's PC, passively discovers IGMP and PIM behavior, probes the L2/L3 path, and produces structured evidence packs tagged by team responsibility — so the right team gets the ticket the first time. Free and open source under MIT.
Who it’s for: Operators troubleshooting multicast in enterprise and MPLS networks from the endpoint — no router credentials needed.
Product tour
Nine screens. Zero router credentials.
Hover to pause, click any frame to inspect it full size.
Feature slideshow
Step through every screen
A slideshow that plays on its own — click any slide to zoom in. Real product, demo data.
Diagnosis Verdict
Capabilities
What Zilk Multicast Analyzer does
Zero-credential diagnostics
Three operating modes with graceful degradation diagnose multicast issues without any device access.
Passive protocol discovery
Detects IGMP v1/v2/v3 and PIM behavior and performs querier and multicast-router (mrouter) checks by listening on the wire.
Active join probes
Joins groups from the client to surface snooping problems, RPF failures, and TTL traps that are invisible from a passive view.
Team-tagged evidence packs
Generates HTML, Markdown, and JSON reports with audit trails, each finding tagged to the team responsible for the fix.
Continuous monitoring
Tracks per-group traffic with rate sparklines and resolves source addresses to reverse-DNS names.
CLI and local web UI
Use it in scripts or in the browser, and run it fully offline.
Use cases
Where teams put Zilk Multicast Analyzer to work
- 01
A support engineer diagnoses why a multicast video stream is dropping at a client site without waiting for router credentials or a change window.
- 02
An operations team uses the team-tagged evidence pack to route a multicast ticket straight to the group that owns the fault instead of bouncing it between teams.
- 03
A field technician runs the portable tool on a laptop plugged into the affected segment to confirm IGMP snooping or RPF misconfiguration.
- 04
An MPLS/enterprise network team continuously monitors per-group multicast rates to catch degradation before users report it.
- 05
An engineer scripts the CLI into a repeatable, offline diagnostic run and archives the JSON output as an audit record.
Specifications
Technical specifications
- License
- MIT (open source, free to use)
- Platforms
- Windows, Linux, macOS
- Install
- pip install mcast-doctor, or portable
- Interfaces
- Command-line and a local web UI; fully offline-capable
- Protocols
- IGMP v1/v2/v3 and PIM discovery; querier and mrouter checks; active join probes
- Reports
- HTML, Markdown, and JSON evidence packs with audit trails, tagged by responsible team
- Access model
- Client-first / zero-credential — runs on the operator's PC, needs no device logins
- Quality
- 182 passing tests
- Source
- github.com/asad4ntrp2/zilk-multicast-analyzer
Why Zilk
Why Zilk Multicast Analyzer
Diagnoses multicast from the endpoint with zero device credentials, so engineers don't wait on router access or change windows.
Team-tagged evidence packs route each finding to the responsible team, cutting ticket ping-pong.
Free and open source under MIT, installable in one pip command or as a portable binary.
Runs fully offline as both a CLI and a local web UI, fitting scripted pipelines and hands-on troubleshooting alike.
Part of our Networking & Infrastructure practice
Zilk Multicast Analyzer is built and supported by the same engineers who deliver our 21 Networking & Infrastructure services — design, deployment, and day-2 operations included.
The story
From black screen to evidence pack — five screens
Keep scrolling — the dashboard follows the story.
01 · Diagnose
Multicast troubleshooting from the endpoint
Type a group address — or scan the wire — and diagnose from the operator’s PC. No router credentials needed, with three operating modes that degrade gracefully.
02 · Verdict
A verdict, not a wall of packets
Each run ends in a plain-language finding: what broke, what to try, and who to tell — with the technical evidence one click away.
03 · Tools
A toolbox that ships with its own binaries
IGMP join probes, multicast test sender and receiver, mtrace2, mDNS/SSDP, iperf3 in multicast mode — pure Python or bundled, nothing to install.
04 · Learn
The knowledge book is built in
IGMP, PIM, snooping, RPF, admin scoping — the fundamentals live right next to the tools, so the team levels up while it troubleshoots.
05 · Evidence
Evidence packs, tagged by team
HTML, Markdown, and JSON reports with audit trails, tagged by responsible team — so the right team gets the ticket the first time.
Put Zilk Multicast Analyzer to work
See it against your own environment, ask the hard questions, and get a straight answer on fit.