nwk link status的作用是什么？

2471 节点

问答对人有帮助，内容完整，我也想知道答案 0 本帖最后由一只耳朵怪于 2018-6-3 10:03 编辑抓包发现节点周期性发出nwk link status，这个广播包的作用是什么？在大量节点的网络中，每个节点都发出是否会造成网络堵塞？如果堵塞，如何去掉？谢谢 0
2018-6-1 06:21:36　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × 新星之火12138 该类别下有 83 个回答。邀请回答 heks 该类别下有 75 个回答。邀请回答 wang21cj 该类别下有 72 个回答。邀请回答普罗旺斯的薰衣草该类别下有 69 个回答。邀请回答 hgimtk 该类别下有 64 个回答。邀请回答 chm5 该类别下有 62 个回答。邀请回答风动影随该类别下有 55 个回答。邀请回答 lksas 该类别下有 54 个回答。邀请回答 zhhx1985 该类别下有 53 个回答。邀请回答站着幻想该类别下有 52 个回答。邀请回答 hfgsd 该类别下有 51 个回答。邀请回答 kghfh 该类别下有 50 个回答。邀请回答 blueshine 该类别下有 50 个回答。邀请回答 fdhsfagd 该类别下有 50 个回答。邀请回答你又知道了该类别下有 50 个回答。邀请回答青上也该类别下有 50 个回答。邀请回答 zhouxk 该类别下有 50 个回答。邀请回答深海零下一度1 该类别下有 49 个回答。邀请回答 ufydsyfsf 该类别下有 49 个回答。邀请回答 dsdfshf 该类别下有 49 个回答。邀请回答举报王杰相关推荐 • 关于void nwk_Status( uint16 statusCode, uint16 statusValue )函数使用的情况，请问是在哪里使用的？有什么作用？ 4128 • ZStack-CC2530-2.3.0-1.4.0 中 nwk_globals.h头文件疑问 2556 • 稳压起的作用是什么？ 5054 • 调试时，用Packet Sniffer抓包，NWK层数据都显示NWK Unknown Command，怎么才能使Packet Sniffer能够解析出NWK命令？ 3725 • tasksArr里面的nwk_event_loop处理是做什么的？ 2648 • smart config无法进入SC_STATUS_LINK怎么解决？ 513 • DVRRDK 04.00.00.03,dm8168,display link前面可以是select link吗？ 1288 • 焊锡膏的作用是什么 2475 • FPC的作用是什么 5443 • 晶振的作用是啥？ 594 2个回答

答案对人有帮助，有参考价值 0 如下是解释，from z-stack developer guide,简单讲，pro协议必须使用，路由设备没有周期性收到来自邻居的Link status,会把这个邻居移除。可以改变发送频率，但不能移除。大量节点的情况，参考: http://www.ti.com/lit/an/swra427c/swra427c.pdf 9.7 Asynchronous Links An asynchronous link occurs when a node can receive packets from another node but it can’t send packets to that node. Whenever this happens, this link is not a good link to route packets. In ZigBee PRO, this problem is overcome by the use of the Network Link Status message. Every router in a ZigBee PRO network sends a periodic Link Status message. This message is a one hop broadcast message that contains the sending device’s neighbor list. The idea is this – if you receive your neighbor’s Link Status and you are either missing from the neighbor list or your receive cost is too low (in the list), you can assume that the link between you and this neighbor is an asynchronous link and you should not use it for routing. To change the time between Link Status messages you can change the compile flag NWK_LINK_STATUS_PERIOD, which is used to initialize _NIB.nwkLinkStatusPeriod. You can also change _NIB.nwkLinkStatusPeriod directly. Remember that only PRO routers send the link status message and that every router in the network must have the same Link Status time period. _NIB.nwkLinkStatusPeriod contains the number of seconds between Link Status messages. Another parameter that affects the Link Status message is _NIB.nwkRouterAgeLimit (defaulted to NWK_ROUTE_AGE_LIMIT). This represents the number of Link Status periods that a router can remain in a device’s neighbor list, without receiving a Link Status from that device, before it becomes aged out of the list. If we haven’t received a Link Status message from a neighbor within (_NIB.nwkRouterAgeLimit * _NIB.nwkLinkStatusPeriod), we will age the neighbor out and assume that this device is missing or that it’s an asynchronous link and not use it.

2018-6-1 06:38:26 评论举报凌云志

答案对人有帮助，有参考价值 0 shenzhenqide 发表于 2018-6-1 06:38 如下是解释，from z-stack developer guide,简单讲，pro协议必须使用，路由设备没有周期性收到来自邻居的Link status,会把这个邻居移除。可以改变发送频率，但不能移除。大量节点的情况，参考: http://www.ti.com/lit/an/swra427c/swra427c.pdf 也就是移除僵尸节点，协议栈本身有这个功能吗？我看到我们的程序里面自己添加了移除僵尸节点功能

2018-6-1 06:57:47 评论举报王杰