Kea 双DHCP设置

2024 年 07 月 18 日

520 次浏览

4272字数

<div class="tip share">请注意，本文编写于 309 天前，最后修改于 309 天前，其中某些信息可能已经过时。</div>

两台主机PVE主机互通，高性能主机使用10.0.2.0/22网段，小主机和物理网络使用10.0.0.0/22网段。各自使用RouterOS系统，偶尔出现DHCP抢答现象。
现在RouterOS搭建kea-dhcp4服务器，根据MAC分配地址。
高性能主机配置
只响应bc2411前缀MAC地址

```
{
    "Dhcp4": {
        "subnet4": [
            {
                "id": 1,
                "subnet": "10.0.2.0/22",
                "client-class": "pve",
                "pools": [
                    {
                        "pool": "10.0.2.100-10.0.2.200",
                        "option-data": [
                        {
                            "name": "domain-name-servers",
                            "data": "10.0.2.1"
                        },
                        {
                            "name": "routers",
                            "data": "10.0.2.1"
                        }   
                        ]
                    }
                ],
                "relay": {
                    "ip-addresses": [
                        "192.168.10.1"
                    ]
                }
            }
        ],
        "client-classes": [
            {
                "name": "pve",
                "test": "substring(hexstring(pkt4.mac,''),0,6) == 'bc2411'"
            },
            {
                "name": "DROP",
                "test": "not (substring(hexstring(pkt4.mac,''),0,6) == 'bc2411')"
            }
        ],
        "interfaces-config": {
            "interfaces": [
                "eth0/192.168.10.7"
            ],
            "service-sockets-max-retries": 5,
            "service-sockets-require-all": true
        },
        "control-socket": {
            "socket-type": "unix",
            "socket-name": "/run/kea/control_socket_4"
        },
        "renew-timer": 1000,
        "rebind-timer": 2000,
        "valid-lifetime": 4000,
        "loggers": [
            {
                "name": "kea-dhcp4",
                "output_options": [
                    {
                        "output": "stdout"
                    }
                ],
                "severity": "WARN"
            }
        ],
        "lease-database": {
            "type": "memfile"
        }
    }
}
```

物理网络kea配置
只响应非bc2411前缀MAC地址

```
{
    "Dhcp4": {
        "subnet4": [
            {
                "id": 1,
                "subnet": "10.0.0.0/22",
                "client-class": "others",
                "pools": [
                    {
                        "pool": "10.0.0.100-10.0.0.200",
                        "option-data": [
                        {
                            "name": "domain-name-servers",
                            "data": "10.0.0.1"
                        },
                        {
                            "name": "routers",
                            "data": "10.0.0.1"
                        }
                        
                        ]
                    }
                ],
                "relay": {
                    "ip-addresses": [
                        "192.168.10.1"
                    ]
                }
            }
        ],
        "client-classes": [
            {
                "name": "DROP",
                "test": "substring(hexstring(pkt4.mac,''),0,6) == 'bc2411'"
            },
            {
                "name": "others",
                "test": "not (substring(hexstring(pkt4.mac,''),0,6) == 'bc2411')"
            }
        ],
        "interfaces-config": {
            "interfaces": [
                "eth0/192.168.10.7"
            ],
            "service-sockets-max-retries": 5,
            "service-sockets-require-all": true
        },
        "control-socket": {
            "socket-type": "unix",
            "socket-name": "/run/kea/control_socket_4"
        },
        "renew-timer": 1000,
        "rebind-timer": 2000,
        "valid-lifetime": 4000,
        "loggers": [
            {
                "name": "kea-dhcp4",
                "output_options": [
                    {
                        "output": "stdout"
                    }
                ],
                "severity": "WARN"
            }
        ],
        "lease-database": {
            "type": "memfile"
        }
    }
}
```

最后修改：2024 年 07 月 18 日