Cisco :: How Router Signals HostA To Send Ping To HostB
Mar 22, 2013
i was trying to see each step taking in arp process in simulation mode of packet tracer using hostA,SW1,R1,SW2, hostB diagram.
In simulation mode , everything was flowing nicely till R1's arp resolves hostB's mac address. Then suddenly hostA starts sending icmp packet.
2 question; i thought hostA already sent the icmp to R1 once resolving R1's mac. What happened the icmp packet R1 received.why R1 didnt send the icmp to hostB after resolving hostB's mac.
2.nd question; after R1'arp resolves hostB mac, what triggers hostA send icmp packet cause in simulation mode there is no any signalling to hostA from R1 to do that.
I have a WLC 4404. I added a new AP to the network and it is associated with the WLC now. But still its not braodcasting the ssids. I compared the configuration with the ones installed before and configuration is same.
I have two desktop computers upstairs.The main pc has the Linksys G Router and the other pc is wireless with a network adapter. All works fine here.Downstairs and on the other side of the house, I use my laptop which is wireless to the network. I also have a 46" hidef tv hooked up to a blu ray player and also connected to the network with a wireless adapter. I use Netflix to stream movies and seem to be having a problem with the signal in this room, both on the tv and my laptop. I sometimes only have 2 bars on my laptop and frequently get disconnected to the internet. When I am streaming movies or tv series, I get frequent stops and starts.
I am guessing that the signal is just not strong enough to reach this far from the router. Would switching to an N router be better for streaming? Would another G router downstairs solve my problem?
Recently I bought a new netgear router. It has two separate wireless signals. One is the main wireless connection for my computers. The other is a slower backup network for smartphones, apple tv, and guests. All of the other devices in the house can find both signals, but my main PC is only finding the backup network. It works fine for general browsing, but is very slow for downloads and unusable for gaming
I have tried to put a password on my dlink-615 wireless router, however, this attempt failed and as a result it is no longer picking up the next work signals from my modem.
I have D-link 524 router, my problem is that its signals are not being detected ( the devices we connect are ipad 4, htc wildfire S, nokia e-5 . these devices detect other wifi and connect to them.
From My Router that connects to Cable modem i am unable to ping website 4.2.2.2I am able to ping all other websites fines.Same website i can ping from my pc and all other switches fine.Router has only 1 ACL thats for NAT.
It seems since I have moved into my new house months ago my E3000 keeps on dropping its signal. I have an older roouter that doesn't do this. Currently I have a PS3/Xbox 360 plugged in and then the 3 laptops that use the wireless.
E2000-RM router has been working fine until about 2 days ago. Wired connection still works fine, but the wireless signals seems to be dropping in and out. I have a couple wireless devices and they all seem to be experiencing problems. Using the network connection bar on my laptop sometimes it shows a strong signal and connects no problem. Then all of a sudden the signal is gone (drops off list). It can be both the main and guest signal dropping, other times it might just be the main, etc., etc. Sometimes it shows a signal but will not connect and then a few seconds it might connect, or drop entirely. I guess the best word to describe it is highly erratic. Distance does not seem to matter. I can be 2 feet away and get the same behavior. The indicator on the box shows a signal at all times.
So I just got this router in hopes that I would get a better signal within my room as opposed to my older router. Unfortunately, nothing has changed, in fact I think I'm getting weaker signals. My previous router was a D-Link WBR-2310. I went to speed test.net and tested 3 variables. My wifi on my desktop in my room, my wifi when right next to a router on my laptop, and my wifi using my neighbors wifi in my room.
My room Desktop Wifi: Download was 0.50 mbs Upload: 3.6
My laptop right next to Router: Download 19.87 mbs Upload: 3.5
My room Desktop Neighbors Wifi: Download was 17.3 mbs Upload was 3.32.
What is the point of this new wireless N router, when it can't beat a G router older model in reach? And why does is have a 0.50 mb d/l speed but a 3.6 upload speed?
i receive my router signals at my laptop but no internet access. i am receiving this problem from last 2,3 days. Before this it was working fine. I have reset the router settings many time but no results. i get the signals at my laptop but i cant access the internet . some times i got DNS server error.
I have D-link 524 router, my problem is that its signals are not being detected previously it was working fine( the devices we connect are ipad 4, htc wildfire S, nokia e-5 . these devices detect other wifi and connect to them.
I have a Linksys wireless-G connected to my main computer and modem. We live in an extremely long house and I am attempting to connect a Belkin wireless-G router so that the signal is stronger on the other side of the house.
I am having no end of issues with this router since the upgrade to CCC. I don't want to downgrade because the reason I purchased the router was for the hopeful addition of more apps later on and the CCC.
My router has now suddenly decided to no longer broadcast N signals. My 2.4ghz network is set for mixed and my 5ghz is set for N Only. They are both set to auto channel and WPA2 Personal security and have been working since I purchased the router on Sunday.
Last night it spontaneously rebooted and that was that.
Both laptops (with N adapters) are seeing the 2.4ghz network as 802.11g and my 300Mbps notebook adapter is seeing the 5ghz network as 802.11a. InSSIDer is showing that both networks are now broadcasting at a max of 54Mbps.
I have tried rebooting the router multiple times. I have also tried unplugging it for 60 seconds. I have also attempted to force the 2.4ghz to 20Mhz and a more optimal (unused) channel. That doesn't work. I tried setting the 5ghz network to wide (40mhz) with an optimal channel. Same deal. Still seeing it as 802.11a.
I have a cisco router model number E2000 it has worked fine until a few days ago, it keeps losing its signal on all my wireless devices I have reset it and it still is not working properly. I am wondering if I have to many wireless devices running through this router.
I just installed a Linksys WRT160N router. The signal started of good about 50 to 70 feet from the routers location. Now the signal is registering as low to good, about 54Mbps. I was wondering what options I might have to install a wireless bridge for expansion of the signal. I have configured an encrypted network using WPA2. I am wondering what the technical difficulty would be to install and configure it. I setup the WRT160N myself if that means anything.
At one of our offices, we have a Cisco ASA5505 firewall that has dhcp enabled. I have a WRT54G router plugged into that firewall with DHCP enabled. The scope of our inside network is 192.168.51.***, however when connected to the WRT54G, it gives you the scope of 192.168.1.***We have an antenna amplifier screwed into one of the antenna ports on the router. This whole setup works fine.
The problem is we need to install an access point WAP54G in a building across the property (picks up router wireless signal fine) to repeat the wireless signal to the back of the property where the router will not reach. I have read that all you need to do is type in the wireless mac address of the routher into the access point and select "Wireless Repeater". I have the channels set to 6 on both devices as well as the same security configuration. When I try to connect to the wireless network on the access point, It never gives me an ip in the 192.168.1.*** scope, which the WRT54G is configured to give out. Also, in this setup does the WRT54G need to be set to router or gateway mode? I do not need it to distribute ip addresses. [code]
I bought a WRT54G v6 and since I installed and configured it I've experiencing an intermittent connection in my lan where you can find a notebook wireless connected to the router and a desktop wired to the router by cable.I'm working and then the network stops, both computers lose signal with the router. The signal come back few seconds later but to work in internet again I have to wait some minutes.So I contacted the live assistent on Linksys web-site and the agents said to me to do something that I will list here:- lower the MTU to 1480, 1470, 1450- updated the firmware- reflash the firmware- reset the router for about 30 seconds- do the power cycleIf you don't know what update and reflash the firmware or do the power cycle means you can srsistedthe conclusion is that ee the instructions on this pages: [URL] ...
I have a Wrt160n router and a Motorola sb120 modem (provided by comcast after my original modem got fried by lightning, no I didn't have my router hooked up when that happened), I have been having trouble trying to get the modem to send the internet signal to my router. I have tried mac address clone that was suggested on this forum for someone with a different router but still no internet to my computer, its all hooked up through Ethernet cables, the computer I have it hooked up with a hard line is running windows seven. When I plug the modem straight to the computer it works and I have internet but when I hook up the router between them it has no internet.
I've had been successfully using a WRT400N to extend my wireless network as follows:
The WRT400N connected to my network via an Ethernet port in my kitchen. The cable ran down to a corner of my basement connecting to Verizon router that brings in our Internet, TV etc.
The Verizon router's poor location was a problem, and placing the WRT400N in the kitchen worked perfectly, providing excellent network access and Internet to wireless devices throughout my home. It worked fine for over a year.
Recently, we had a power outage which reset the WRT400N to factory settings. and I am having trouble getting it to work again. I set it up in the first place, but am now having difficulties. Clearly, I am no guru!
I tried to get it going again by: 1) plugging the WRT400N into a PC and giving it a new IP address that would not conflict with the Verizon router (both default to 192.168.1.1) 2) turning off DHCP, 3) renaming the router, 4) changing the router password, 5) setting up a WPA2 security key.
I then plugged the WRT400N back into the kitchen Ethernet port, but something is wrong. Wireless devices cannot find the WRT400N.
The good news is that I can "see" the WRT400N through any PC on the network via a browser and access setup, but the bad news is that devices cannot see or connect to the wireless signal.
When I go to "Status" it shows the IP address, subnet address and default gateway all at 0.0.0.0. On the SETUP page, it has the correct router address (192.168.1.9), and a subnet mask of 255.255.255.0. Not sure if it is supposed to be this way...
Just got the E4200 and it seemed great at first. Connected at 450mbps at close range (maybe 6ft away) and got 223mbps transfer.It seems that recently my signal is much weaker. I'm around 6-8ft away from the router and I'm getting between 270-360mbps, which to me is poor given the short range.InSSIDer says the RSSI is -50, while my other wireless N router (dual band) is -35 and is in the exact same location. I'm using the 5ghz radio only, and it is set to N, and I'm using channels 44 and 48. I checked the hidden advanced wireless page and transmit power is already set to high.My laptop has an Intel 6300 wireless card.I'm using the current firmware 1.0.02,I've noticed that the speed of the router randomly seems to drop off too (just as I type this, the link rate has gone back up to 450mbps... typical). Is the router throttling when it gets hot or something? So I just want to find out if others are experiencing similar rates at the same kind of distance. Seriously, how can you advertise something as 450mbps when you can't even get that link rate at a distance as short as 6ft?I can't see any thing I can do to increase the link speed (back down to 270mbps now), short of a firmware update to increase the power and use higher channels. I hear the higher channels are much better, so who do I have to write to, to plead for new firmware?,This is a great product, but it's totally ruined by stupid internal antennas and a weak transmit power.
I live in a single story bungalow, and im wanting to resite my EA4200 up into the roof space, just wondering which is the best position to mount it in for signal, horizontal or vertical, or doesnt it matter ?
So here's my issue, I just bought this EA4500 so I could use the 5.0 Ghz and get a new 2.4Ghz as my old Netgear would drop the signal on a fairly regular basis. I've set the channel on 2.4 to 1, 20 Mhz Channel, and my neighbors are for the most part using channels 6 and 11 (one guy is using channel 2 at 40Mhz but has a very low signal strength). The signal drops out sometimes as often as every 5 minutes, and now it is doing it on my new router. Here's the kicker, the 2.4 band falls out from my router and some of my neighbor's routers, no new signal seems to come up, but the 5.0 band on the EA4500 is just fine, as is the wired route. Is the 2.4 band just being assaulted at my home and I'll have to deal with it, or is it that my new router, old router, and my neighbor's routers, all suck, and we should all get refunds? Any solutions to troubleshoot this beyond running a netstumbler like software, setting hard channels (including width), and long hours of trial and error? I am running this all from my macbook air, the 5.0Ghz is at 40Mhz, is the only signal, and is on a fixed channel.
At random times, my internet will "drop" connection and will not download any packets, but I am still able to send packets. My Local Area Connection icon continues to say I am connected, my modem is fully functional, and my cables are good. I can get my internet back up and running for 10 minutes or so by disable and re-enabling my Network Connection. If I simply try the "repair", it gives me an error at the "Refreshing IP" step.I have done a full system scan for viruses and I am clean. My drivers are fully updated, I have disabled my firewalls, and still no luck. During the times when it is down, I can successfully ping my modem through CMD, but I get the time-out error if I ping a site, my default gateway, the DHCP Server, or the DMS Servers.I have made no changes to any major settings on my computer, nor has there been any recent additions/removals of any software.
I'm trying to relace my isp modem by a cisco 877 adsl router..
The internet part is already done is working fine... however... there is also an seperate pvc for the voice part.
The pvc is working with the MER protocol... the thing now is... when i'm trying to get an ip address by dhcp on the sub atm interface nothing happen..
I did an debug dhcp detail and see that the router is first sending correctly an dhcp discover,the isp is replying to this with an dhcp offer i see my ip address,subnet mask and gateway addresses however.. the router isn't replying anymore with an dhcp request... so nothing happens anymore..
i'm currently doing task in this packet tracer, i've already completed 100% but i noticed that there are certain router cant send packet to the main router,i think the best way is to add default route, and i already add default route but it doesnt come out on the routing table,problem : HQ router cant send packet to ISP router?
