Is it normal for a pc to send broadcast to ip address that don't really exist? I am using wireshark to sniff my company's network activity and im seeing something like this.who has 192.168.2.102 tell 192.168.2.235
who has 192.168.2.103 tell 192.168.2.235
who has 192.168.2.104 tell 192.168.2.235
who has 192.168.2.105 tell 192.168.2.235
who has 192.168.2.106 tell 192.168.2.235
but ip address 192.168.2.102 - 192.168.2.106 are currently not being in use..
I just got a new Inspiron 660s last week and have been having some unusual connectivity issues with it. After suffering for a day or so with a painfully slow wireless connection (the status showed the signal was "excellent" but the speed of downloads or loading web pages was dreadful; meanwhile my older Inspiron Mini in roughly the same location blazes along and has for years with no problems), I decided to try just going with a wired connection. This fixed the speed issue to say the least, but now the connection drops for a few seconds every five minutes or so, then immediately reconnects. If I were just web-surfing, it wouldn't impact me all that much, but the activities I enjoy, like playing games online and streaming music, require a signal that doesn't keep cutting out. I've tried updating the drivers, but I'm told I have the most up-to-date drivers. I've tried unchecking the power-saving options and I've tried unchecking IPv6 and just about every other solution I've come across in my web searches, but nothing works. When I get home from work this evening I may try uninstalling and reinstalling the device drivers. Barring that, I may just go pick up a USB wireless adapter-- I used a cheap Belkin one in the same location on an old Dimension desktop years ago and it worked great-- and see if that works.
I know that 255.255.255.255 is the broadcast address to send message to all hosts that are in LAN. what i want here is, i want to send a mail to all hosts using this address.
I'm trying to get a wireless N-router and a N-adapter for a room outside the range of a G router. But their are two laptops at the house. They both use g adapters. Can the N router broadcast both N and G signal at the same time? So all adapters in the house can connect to the router. Does broadcasting both signals degree the range of the N broadcast making the an additional N adapter useless?
My router has been having major problems lately [Well, for a while now]. Before, it would make all my machines [1 PC, 2 Laptops] disconnect from the internet briefly and reconnect. This doesn't impact browsing, video watching, etc. It wouldn't even say I was disconnected. However, I know it was disconnecting because programs like AIM, MSN, and multiple video games would say I lost connection. For example, MSN would disconnect and take me out of any conversations and reconnect a second later. Friends tell me that I keep going offline and then online.
I read somewhere I should change my channel, so I did and still got the same problem. Furthermore, my router/pc are literally right next to each other. Then I read elsewhere I should do a factory reset on my router by holding the reset button for a while. So I did and it reset. It started broadcasting as an unsecured network, so I was going to secure it.
1. Log in via http://192.168.0.1 (default "username: Admin and no pass")
2. Go to setup tab ----> internet ----> internet connection wizard2.1 CHANGE PASSWORD ! click next 2.2 chose time zone (you know where you are) 2.3 Configure your Internet Connection DHCP Connection (Dynamic IP Address)Choose this if your Internet connection automatically provides you with an IP Address. Most Cable Modems use this type of connection. 2.4. press "clone your computer's MAC address" ; hostname: 'your computer name in ubuntu' ( mine is "grobar" yours is ..... )
3. Go to setup tab ----> wireless settings ----> Wireless Network Setup Wizard (after this we're gonna do manual settings)
3.1 give your network a name= SSID (e.g. 'grobar') 3.2.Automatically assign a network key (Recommended) and chose WAP or WAP2 3.3 Write down the network key!!! Or do printscr and save this page.
4. Go to setup tab ----> wireless settings ---->Manual Wireless Network Setup 4.1 Wireless Network SettingsEnable Wireless : ALWAYS Wireless Network Name : (Also called the SSID) the name you gave in 3.1 802.11 Mode : chose "mixed 802.11n,g and b" Enable Auto Channel Scan : YES Wireless Channel : AUTO Transmission Rate : BEST (Mbit/s) Channel Width : AUTO 20/40 MHz Visibility Status : !!!Invisible!!! (so that no outsiders know your SSID except you) So after I finish the Internet Connection Wizard [Setting up Password etc], the http://192.168.0.1/ page asks me to click "Connect" so it can reboot the router with the settings. When I do so, the router turns off with the power icon being orange. After about 15 seconds or so, the broadcasting icon, power icon, and PC1 icon all turn green. However, there is a globe icon on it as well and that is ORANGE.
Regardless of power cycling, redoing the process, etc. it stays orange. None of my machines can connect to it. The only way I can connect again to the router is if I do a reset again (By holding the reset button). But then, I am unsecured and live in an apartment. I would like to add that the above process is the one I did previously and it worked fine. But then I had to reset the router and a similar problem occurred but I managed to fix it somehow and the first problem I talked about started happening (Reconnecting and disconnecting). Furthermore, when I go to "Connect to a Network" one of the old SSIDs I created for the router is still there regardless of the router status (Offline, Not connected, etc). I am typing this by connecting my PC directly to my modem. Router Information: D-Link DIR-615 300N
I am having issues recieving UDP response from my smart lighting control, i can here it in the same town but not from overseas..internal ip address 192.168.0.3 port 6000 it hears my commands from overseas i just cant here its response.
My D-Link DIR-655 most of the time does not broadcast wireless signal. I use Windows 7 and XP with same result. I see at least a dozen of broadcasting wireless signal in my network. Even after it worked, then next time I power-on PC, the signal is not there. The Router does not show the status light for wireless usage for these non-broadcasting time. It works and does not work.
I have my DIR-825 (type B, .202NA FW) all set up and wireless is working well, EXCEPT for the fact that inSSIDer consistently shows it broadcasting at only 54mbps, while it also shows several of my neighbors in the 150 and 300 ranges. I'm using a DWA 160 adapter in my notebook.
I have my 2.4 channel set for g&n, and my 5.0 channel at N only. both WPA2 and AES. WMM enabled. I've tried any number of combinations but nothing seems to work.
If I was content with 54mbps, I'd have stuck with my old G router.
Why do we need them? Could we leave the LAN with a subnet broadcast packet (for instance with an address of 192.168.1.255 /24). Are those addresses used for something?
how a device (PC or router, in this example) knows to slow down broadcast of traffic.Say my cable modem from my ISP is coded to only allow 50mbps.My internal network supports the normal 100mbps.How does my router know to not send my cable modem more than 50mbps of data (because anything above, I assume after the cable modems RAM fills, will be dropped).I know TCP/IP has "Autonegotiation" which determines link type, but it's only based around if t's 1000/100/10 ethernet. No custom speed variable, such as 50mbps in this case.Say I put my network uploading data maximum stress to my internet connection, at 100mbps. Will my cable modem ever send some special packet telling me router that's too much or something?I suppose if I knew this, I could also understand how when I upload a file to another computer on my network, it does it at the full 100mbps, but over the internet, limited to my upload speed; but how does my computer or router know to slow down because my ISP doesn't allow 100mbps up? It has to be able to detect link speed somehow, otherwise just constantly sending 100mbps up will result in tons of lost data at my router/cable modem, and give the computer a frequently false sense of upload speed.
Trying to find out if a switch learns a mac address of a connected device which only sends broadcasts to the switch port (no unicasts). For example one type of attendance terminal...
They currently have three Ambicon WL300N-ARs in their network. They are set up as AP and everything has been running fine till we tried to put a security DVR/camera behind each router. The first one worked without any issues but once we connected the second DVR to the network became unusable, very slow. Someone told the IT guy that it was probably a broadcast storm. I don't know anything about the ambicon routers, but if the wireless is setup as a AP would it forward broadcast? I was under the impression that routers did not forward broadcast. or by setting it up as a AP it no longer performs as a router? The three Ambicons are connected to a unmanaged fiber switch, I asked for a make and model but he didn't know. Also connected to the fiber switch is another unmanaged netgear switch.
I have an AP, model AIR-LAP1041N-A-K9. How does the AP work? How does the AP broadcast?. Is It a circle and the AP is the center? Does the AP broadcast more front than back? Have any blind spot? I see the datasheet [URL] -
To prevent virus to spread throughout the network ports or switches, can i used broadcast storm to control? sometime, network may encountered loop, or some virus spread?
What will be recommended level? or the threshold / pps ?I read through cisco website, and understand, however, just never apply before, what is the recommended level for ?in my network, we do have network ports connected to media server, just sharing video, song, etc for testing purpose, however not using PIM, but it work.
we manufacture an industrial device that runs embedded linux, and we are throwing ideas around on how we can find devices that are connected to our network, without knowing their ipAddress. I know this is possible, because Advantech do it with their ADAM utility to find units. I put a WireShark sniff on my LAN as the ADAM Utility found a unit, and saw the following[CODE]
I have an AS-external route being redistributed into OSPF from a static route on one of my routers. I recently changed the static route from a /24 to a /26 and all of a sudden the link ID of the segment in the OSPF database went from the network address to the broadcast address: Code:
How can know the Broadcast address before subnetting? I know how to calculate the broadcast address , but don't understand 'Broadcast address before subnetting'?
My DSL modem/wireless router wont broadcast the wifi signal i need to know if it is just defective or a setting that can be turned off, It was working just fine and just recently stopped broadcasting, it works just fine for a direct connection. (It is a regular windstream wireless modem/router.
im using microsoft network monitor to monitor all traffic in and out (public) and mirrored ports for local traffic, except wireless traffic as its connecting to the router. I want to use a wifi NIC on the server to broadcast, so wireless clients can connect via the server and obtain DNS and DHCP etc from there, therefor, monitoring all traffic.
I tried to set my x3000 (firmware 1.0.03) to wake up on internet my pc. This is my configuration:IP lan 192.168.1.10 (fixed on pc and reserved in DHCP)Firewall: forward port 9 from WAN to LAN IP.I can't set broadcast IP (192.168. 1. 255) from web interface.I also tried this solutions but without success: url...
I have an DLINK-dir 815 router.. I have tried for 10 hours to get broadcast IP to work, no luck.. All html/javascript modifications = no luck..The WOL works on LAN, but not over internet, so I figure it's the broadcast IP that needs to be virtual servered?
I have WLC 4404 Controller with 180 LWAPP. i want to disable Broadcast SSID from some specified APs not all. is it possible to do that with 4404 WLC controller.
Situation: On a Customer Site we have a Cisco ASA5510 in routed mode, and we have 2 networks which are both routed fine. The Customer has one device+ on lets say Network1 and a device2 on Network2.
Problem: Device1 now needs to communicate with Device2. To initiate the communication Device1 sends out a broadcast to find other devices. How can we tell the asa to just take that broadcast from that specific device1 and "route" it through Netzwork2. Is there any chance to get this working?
I have problems to connect a MAC-Server from the wireless-network (WLC-4402-50-K9, Version 5.1.163). The wired clients doesn't have problems to connect to the MAC-Server. The connection works over broadcasts. The wireless-network don't forward this broadcasts. The broadcast-forwarding feature is activated. It is no problem to the MAC-server from the wireless-clients. The hole network is in the same IP-network (one broadcast-domain).
My neighbour and i will share internet costs, we have visibility and about 200m distance. cantenna should be fine to connect us. i can connect to his WIFI with my laptop when close his house. the setup i would like,m but i'm not clear about:
a) i need an access point device to connect the cantenna to it first, then i would like to broadcast that signal via Ethernet to WIFI-N router to connect the 3 computers in my location.
b) what exact AP device should i purchase ? i already have Linksys E3200 wifi router but, so i'm not sure about the AP device or if that's what i really need to what i'm imagining.
Everytime I disable SSID Broadcasting 2 extra wireless connections appear available connections list. (See wirelessconnections.jpg) One is blank and one is labeled Other Network. They disappear when I enable SSID Broadcasting. I am not sure why this is happening.
I recently updated my firmware for a DIR-601 router and have internet while hardwired, but no wireless. I saved the configuration settings before updating, but this doesn't even matter because my wireless router doesn't even show up in the list of available wireless network connections. Why isn't my router showing up? I tried a few things like unplugging it and resetting it, but nothing seems to work.
