udp 能跨网段广播 谁能告诉我udp跨网段怎么发消息,比如192.168.2.1到192.168.13.2去 c#的

Posted 2023-04-17

网上说要在3层交换机上设置,不知道怎么设 有不用设置交换机的方法? 什么udp穿透的完全看不懂,谁有简单点儿的例子给我看下啊?谢谢了啊

参考技术A 在实现跨网段发消息的话要你的网络支持跨网段才行，即使支持跨网段的话要想跨网段广播也要设置广播域才行。关于如何跨网段广播可以参考这篇文章http://blog.csdn.net/f_ty_45/article/details/8844159，希望对你有帮助。 参考技术B 两种方式，一种是通过路由，
另一种是广播，比如255.255.255.255追问

额...广播不能跨网段

微耕门禁跨网段搜索代理

解决UDP无法跨网段时的控制器搜索问题

思路：

1. 配置已知的搜索指令
2. 配置已知的待搜索网段
3. 定时使用HTTP发送指令至IP，收集并缓存收到的应答
4. 监听收到UDP搜索指令，将未超时的缓存作为应答返回

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配置

@@@code

{

"Logging": {

"LogLevel": {

"Default": "Warning"

}

},

"Scan": {

"Minute": 60,

"AliveMinute": 720,

"Command": [

{

"Name": 1994,

"Enable": 1,

"Data": "19 94 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00",

"ProtocolHead": "1994",

"SNPosition": 4

},

{

"Name": 2410,

"Enable": 1,

"Data": "24 10 f4 33 02 06 00 00 00 00 00 00 ff ff ff ff 00 00 02 00",

"ProtocolHead": "2411",

"SNPosition": 8

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},

{

"Name": 2440,

"Enable": 1,

"Data": "24 40 b3 e4 01 00 00 00 00 00 00 00 ff ff ff ff 00 81 02 00",

"ProtocolHead": "2441",

"SNPosition": 8

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}

],

"Timeout": 3,

"NetMask": [

"172.16.2.*:60000",

"172.16.3.*:60000",

"172.16.4.*:60000",

"172.16.5.*:60000",

"192.168.153.*:60000",

"192.168.156.*:60000"

]

},

"UDPServer": {

"ProtocolHead": [

{

"Name": 1994,

"Heads": [ "1994", "1794" ]

},

{

"Name": 2410,

"Heads": [ "2410" ]

},

{

"Name": 2440,

"Heads": [ "2440" ]

}

],

"Timeout": 3,

"IPEndPoint": "127.0.0.1:60000"

},

"AllowedHosts": "*"

}

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@@#

效果图

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