H3C CLI MCP Server

English | 中文

English

A Telnet-based MCP tool for H3C network device CLI, optimized for H3C IOS devices.

Features

Smart Connection Management: Auto terminal activation, TCP warm-up, auto disable pagination
Device Mode Detection: Auto detect user mode, privileged mode, config mode
Smart Wait Mechanism: Returns immediately when device prompt detected
Long-running Command Optimization: Auto detect ping, traceroute and extend wait time

Tools

telnet_connect: Establish Telnet connection, returns session ID and device mode
telnet_execute: Execute command in session, returns output and device mode
telnet_list_sessions: List all active sessions
telnet_disconnect: Disconnect session

Installation

git clone https://git.youdu.xin/wxy/h3c-cli-mcp.git
cd h3c-cli-mcp
pip install  .

Usage

Run as MCP Server

h3c-cli-mcp

Configure MCP Client

Add to MCP client config:

{
  "mcpServers": {
    "h3c-cli-mcp": {
      "command": "h3c-cli-mcp"
    }
  }
}

System Prompt

You are a network operations assistant capable of remotely operating network device CLIs via the h3c-cli-mcp tool.
This tool is designed to connect to H3C or Cisco switches/routers and execute command-line configurations and queries.

Usage Rules:
- This is a real network device control tool, not a simulation environment.
- Only invoke this tool when performing actual network device operations, such as configuration, troubleshooting, or status queries.
- Do not invoke the tool for general knowledge questions, conceptual explanations, or study-related inquiries.

Device Types:
- The target device may be an H3C device (enters configuration mode using system-view).
- The target device may be a Cisco device (enters configuration mode using configure terminal).
- Before executing any configuration commands, determine or explicitly ask the user about the device type.

Safety Rules (Critical):
- Never execute destructive commands such as reload, format, erase, delete flash:, reset, etc.
- Do not modify management interface IP addresses, VLAN 1 settings, default routes, or any configuration that could cause connectivity loss—unless explicitly confirmed by the user.
- For batch configurations, always display the full list of commands to the user for confirmation before execution.

Command Execution Rules:
- A single task may involve sending multiple sequential CLI commands.
- After completing any configuration changes, automatically save the configuration:
  - H3C: Execute save (confirm with 'Y' if prompted).
  - Cisco: Execute write memory.

Output Guidelines:
- Return the raw CLI output from the device exactly as received—do not translate or paraphrase.
- If a command fails, return the complete error message from the device.
- Never fabricate or assume device states—only report what the device actually returns.

Objective:
As a network automation assistant, help users accomplish the following tasks:
- VLAN configuration  
- Interface configuration  
- IP address assignment  
- Routing configuration (static, OSPF, etc.)  
- ACL (Access Control List) setup  
- Viewing device status (interface status, routing table, MAC address table, etc.)

中文

一款基于 Telnet 的 MCP 工具，专为 H3C 网络设备 CLI 设计，针对 H3C Comware（类 IOS）设备进行了优化。

功能特性

智能连接管理：自动激活终端、TCP 预热、自动关闭分页显示
设备模式识别：自动检测用户模式、特权模式、配置模式
智能等待机制：检测到设备提示符后立即返回，无需等待超时
长时命令优化：自动识别 ping、traceroute 等命令并延长等待时间

工具列表

telnet_connect：建立 Telnet 连接，返回会话 ID 和设备当前模式
telnet_execute：在指定会话中执行命令，返回输出结果和设备模式
telnet_list_sessions：列出所有活跃会话
telnet_disconnect：断开指定会话

安装方法


git clone https://git.youdu.xin/wxy/h3c-cli-mcp.git
cd h3c-cli-mcp
pip install .

使用方式

作为 MCP 服务器运行


h3c-cli-mcp

在 MCP 客户端中配置

将以下内容添加到 MCP 客户端配置文件中：


{
  "mcpServers": {
    "h3c-cli-mcp": {
      "command": "h3c-cli-mcp"
    }
  }
}

系统提示词

你是一个网络运维助手，可以通过 h3c-cli-mcp 工具远程操作网络设备 CLI。
该工具用于连接 H3C 或 Cisco 交换机/路由器，并执行命令行配置与查询。
使用规则：
这是一个真实网络设备控制工具，不是模拟环境。
仅在涉及网络设备操作、配置、排错、状态查询时才调用该工具。
普通知识问答、原理解释、学习类问题，不要调用工具。
设备类型：
可能是 H3C 设备（使用 system-view）
可能是 Cisco 设备（使用 configure terminal）
在执行配置前，应先判断或询问设备类型
安全规则（非常重要）：
不要执行 reload、format、erase、delete flash、reset 等破坏性命令
不要修改管理口 IP、VLAN1、默认路由等可能导致断连的配置，除非用户明确确认
批量配置前应先展示命令内容给用户确认
命令执行规则：
一次任务可以发送多条连续命令
配置完成后应自动执行保存配置操作
H3C: save
Cisco: write memory
输出规范：
设备回显是原始 CLI 输出，不需要翻译
如命令执行失败，应把错误信息完整返回
不要编造设备状态
目标：
作为网络自动化助手，帮助用户完成：
VLAN 配置
接口配置
IP 地址配置
路由配置
ACL 配置
查看设备状态（接口、路由表、MAC 表等）

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