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Windows 7 broadcasts
Hello, I've added a windows 7 (dell inspiron m5040) laptop to my ageing small home lan and the now the wireless lan indicator on the router is indicating activity pretty much all the time the laptop is on irrespective of whether it's in use or sitting idle. After investigating a little I have discovered that the laptop is globally (255.255.255.255) broadcasting two udp datagrams, one with it's mac address and the other with it's hostname all repeated every one second. I suspect this isn't standard windows 7 network behaviour. Is there any way to increase the delay between broadcasts to something more sensible? Thanks in advance for any help. Jim |
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#2
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Windows 7 broadcasts
James Egan wrote:
Hello, I've added a windows 7 (dell inspiron m5040) laptop to my ageing small home lan and the now the wireless lan indicator on the router is indicating activity pretty much all the time the laptop is on irrespective of whether it's in use or sitting idle. After investigating a little I have discovered that the laptop is globally (255.255.255.255) broadcasting two udp datagrams, one with it's mac address and the other with it's hostname all repeated every one second. I suspect this isn't standard windows 7 network behaviour. Is there any way to increase the delay between broadcasts to something more sensible? Thanks in advance for any help. Jim Rest easy. That's normal. My WLAN light blinks every second or so, broadcasting its SSID. I've looked at my router settings. I can switch off wireless completely and also switch off SSID-broadcasting, but can't see any way to alter the polling frequency. Leave it all alone. You'll be in the same company as more than 99% of all router-users. If you can see neighbours' networks in your Win7 Wireless Network Connection list, well, those come from routers doing their stuff. As long as you have a decent password you'll be ok. Ed |
#3
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Windows 7 broadcasts
Ed Cryer wrote:
James Egan wrote: Hello, I've added a windows 7 (dell inspiron m5040) laptop to my ageing small home lan and the now the wireless lan indicator on the router is indicating activity pretty much all the time the laptop is on irrespective of whether it's in use or sitting idle. After investigating a little I have discovered that the laptop is globally (255.255.255.255) broadcasting two udp datagrams, one with it's mac address and the other with it's hostname all repeated every one second. I suspect this isn't standard windows 7 network behaviour. Is there any way to increase the delay between broadcasts to something more sensible? Thanks in advance for any help. Jim Rest easy. That's normal. My WLAN light blinks every second or so, broadcasting its SSID. I've looked at my router settings. I can switch off wireless completely and also switch off SSID-broadcasting, but can't see any way to alter the polling frequency. Leave it all alone. You'll be in the same company as more than 99% of all router-users. If you can see neighbours' networks in your Win7 Wireless Network Connection list, well, those come from routers doing their stuff. As long as you have a decent password you'll be ok. Ed Two new networks have recently appeared on my list, BTFON and BTOpenzone-H. My next-door neighbour has got a new BT broadband router, and as well as handling his own private network it works as a hot-spot for those subscription networks. His private network uses WPA2-PSK security protocol, but the other two are unsecured. Ed |
#4
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Windows 7 broadcasts
On Fri, 12 Oct 2012 18:00:46 +0100, Ed Cryer wrote: Rest easy. That's normal. My WLAN light blinks every second or so, broadcasting its SSID. I've looked at my router settings. I can switch off wireless completely and also switch off SSID-broadcasting, but can't see any way to alter the polling frequency. One of the things I tried was switching off the broadcast SSID on the router in case it was somehow inducing the win7 laptop to constantly reply but it didn't make any difference. The same hostname and mac address broadcasts are still made every second by the laptop whether the router SSID is broadcasting or not. The program listed as responsible for the packets by Microsoft Network Monitor 3.4 is "Unknown" which is the same program that's responsible for negotiating the wifi connection. Leave it all alone. You'll be in the same company as more than 99% of all router-users. If you can see neighbours' networks in your Win7 Wireless Network Connection list, well, those come from routers doing their stuff. As long as you have a decent password you'll be ok. I'm not particularly worried about the security side of things, They look like standard broadcast packets but none of the other machines are behaving in this manner. It's not causing any lan grief, I just don't like to see unnecessary flashing lights. Jim |
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