# Network Config Parser Parse Cisco IOS, Arista EOS, or Juniper Junos configs into nested JSON, flat command paths, or a compact stats report in your browser. ## Run it - **CLI:** `gizza tool network-config-parser "interface GigabitEthernet0/1 description uplink to core ip address 10.0.0.1 255.255.255.0 no shutdown ! router ospf 1 network 10.0.0.0 0.0.0.255 area 0"` - **Web:** https://gizza.ai/tools/network-config-parser/ - **Agents:** machine-readable descriptor (parameters JSON Schema) at https://gizza.ai/tools/network-config-parser/tool.json ## Inputs - `config` — Device configuration _(field)_ - `syntax` — Syntax _(field)_ - `output` — Output _(field)_ - `filter` — Filter (case-insensitive substring) _(field)_ - `comments` — Comments _(field)_ ## Output - Parsed config (text) ## Query parameters Open the tool pre-filled and auto-run via URL: - `config` — Device configuration - `syntax` — Syntax - `output` — Output - `filter` — Filter (case-insensitive substring) - `comments` — Comments Example: `https://gizza.ai/tools/network-config-parser/?config=interface%20GigabitEthernet0%2F1%0A%20description%20uplink%20to%20core%0A%20ip%20address%2010.0.0.1%20255.255.255.0%0A%20no%20shutdown%0A%21%0Arouter%20ospf%201%0A%20network%2010.0.0.0%200.0.0.255%20area%200&syntax=auto&output=tree&filter=ospf&comments=strip` --- ## About this tool The **network config parser** turns a hierarchical device configuration into a structured, foldable tree you can read and search. Paste a running config from a Cisco IOS / IOS-XE / NX-OS switch or router, an Arista EOS device, or a Juniper Junos box, and the parser reconstructs the parent/child hierarchy — interfaces and their sub-commands, routing processes and their networks, Junos `{ … }` blocks and their statements. It handles two syntaxes. **Indentation style** (Cisco, NX-OS, Arista) uses leading whitespace to express nesting, with `!` lines as section separators. **Brace style** (Juniper Junos) uses `{ … }` blocks with statements ending in `;`. Leave the syntax on **auto** and the tool detects which one you pasted. Choose how you want the result: - **Tree** — a nested JSON array of `{ line, children }` nodes that mirrors the config hierarchy, ideal for feeding another script. - **Paths** — a flat list of full command paths, one per leaf statement, with each ancestor joined by ` / ` (similar to Junos `set`-style lines). - **Report** — a compact summary: the list of top-level sections plus stats (section count, total lines, leaf statements, maximum depth, comment count). Type a substring into **filter** to keep only the sections and lines that match: matching a section header keeps its whole block, and matching a deep value keeps its ancestor chain so you never lose context. Everything runs locally in your browser — the configuration you paste never leaves your machine. ## FAQ
Which vendors and config formats does it understand? Two syntactic families. **Indentation style** covers Cisco IOS, IOS-XE and NX-OS, plus Arista EOS — devices that express nesting with leading whitespace and use `!` as a separator. **Brace style** covers Juniper Junos, which nests with `{ … }` blocks and ends statements with `;`. The parser works on the *structure* of the text, so any config that follows one of those two conventions parses, regardless of the exact platform.
Is my configuration uploaded anywhere? No. The parser is compiled to WebAssembly and runs entirely inside your browser tab. The configuration you paste is never sent to a server, logged, or stored — close the tab and it is gone. That makes it safe to use on production configs that contain hostnames, addresses, and other sensitive details.
What is the difference between the tree, paths, and report outputs? **Tree** gives you the full hierarchy as nested JSON (`{ line, children }`), best for programmatic use. **Paths** flattens the tree into one line per leaf statement, joining each command to its ancestors with ` / ` — handy for grepping or diffing. **Report** skips the detail and returns a section list plus summary stats (sections, total lines, leaf statements, depth, comments) so you can size up a config at a glance.
How does the filter keep context? The filter is a case-insensitive substring match. If the substring matches a **section header**, the entire block under that header is kept. If it matches a **deep value**, only that line survives, but its full chain of parent sections is retained so the result is still a valid, readable tree. An empty filter (the default) returns the whole config.
What happens to comments and separators? By default (`comments = strip`) comment and separator lines are removed: bare `!` separators, `!`- and `#`-prefixed comment lines in indentation style, and `#`-to -end-of-line and `/* … */` block comments in brace style. Switch to `comments = keep` to retain the prefixed comment lines as nodes in the tree; bare `!` separators are always dropped because they carry no content. The report's `comments` stat always counts how many were seen.
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