Cisco Wireless :: How To Determine What An Acceptable Throughput Rate Is For AP1241AG
Jun 17, 2012
I have a client devices constantly sending data (~ 13 kb per second) to a server through a Cisco AP1241AG (802.11g).I use Iperf to test throughput, but I am having a difficult time determining what an acceptable throughput rate would be.I know in "theory" the best throughput rate I could get is 54 Mbps, but since my client devices only send 13 kbps is 1 Mbps more than enough? or is 13 kbps the low limit for my throughput test?
I find myself having to venture out into the realm of wireless (I'm more of a UC/DC engineer...) and i've got a problem i'm trying to track down. Installed two WLC 5508s, WCS, 3502i APs (123 of them...) in a 4-floor high school. What i'm finding is lousy throughput from a lab of PCs with little USB b/g/n adapters. I took my Macbook in and ran iStumbler to get an idea of the SNR but honestly, i'm not sure what i'm looking for.
For the particular room/SSID/band that i was looking at, i found that in the 2.4 range, i was getting 53% signal strength and about 16% noise. Is that a good level? In WCS, i can see close to a dozen APs in relation to the AP in question, so i'm wondering if the SNR is too high..
What would be an acceptable number of wireless connections to a WRVS4400N router? I'm working in the IT department for a new company, and one of the offices complains that using VoIP and doing large file transfers are constantly a problem. They are all connecting wirelessly to the WRVS4400N. I managed to vpn in and connect to the web interface of the router, and it shows that there are 30 devices connected wirelessly to it. However, when people plug into the wall jack VoIP and data seem to work fine.I can't find any info on what a best practice would be for number of wireless connections to the router. There's no Vlans setup on it from what I can tell, so that may be my next step, to separate data and voice traffic.
We have a 7206VXR with an NPE-G1 processor. We're running the standard stuff on it, but here are the highlights.We just enabled netflow on it to send the data to an external source for analysis and the overall CPU level increased, but not significantly. About what should we expect for the overall CPU level? At this point, it's averaging close to 40% during peak hours.
I want to setup a vpn tunnel from a Cisco VPN Client in the internet over a fritzbox to the Cisco 876 (Version 15.1(4)M3) so that the vpn tunnel terminates at the Cisco 876.For that reason I used the command "crypto map mymap" on the int fastethernet 1. When I try to connect, the VPN Client opens the window for username and password but then ends with the message "not connected". When I do "debug crypto isakmp" the Cisco 876 shows the message: "phase 2 SA policy not acceptable!". [code]
I took a SANS 401 class a few years back, and I remember them showing us how you could break PING (buffer- overflow? memory stack?)by pinging things you wouldn't normally.This was on WinXP I can't duplicate this on Win7, and have forgotten what exactly it was we typed in....I think it was some ALT-code characters, or a tick, 0x33 or something....I realize PING can take octal, decimal, and hexadecimal values?
On our public wi-fi network we have an acceptable use policy page that users must accept in order to access the internet. However I would like to exclude a few devices from having to do this. We have a couple of Kindle devices from a vendor that they configured to automatically connect to the internet for updates twice a day. But they cannot accept the policy so they are blocked.
I want to know that what is the minimum acceptable size of preamble in ethernet frame. if it is less than 7 bytes before sfd begins , will the packet drop?
I am troubleshooting memory leaks and buffers issues on my 1900 and had some doubts regarding the problems that my router causes.Intermitently during the day for no reason the gig0/0 interface connected to ISP stops responding from our management network (log shows that the interface goes down). The ISPs modem responds fine from my management network.The issue goes away by itself in 20 minutes, sometimes more or after a hard reboot.Sometimes a router would increment a throttle value to 1. When running for 4 days without a reboot, the router raised 39 throttles and 57 input drops. [code] The router is running Version 15.1(2)T4 and I was not able to find any caveats on cisco web page (although I havent used the bug finder tool)Is this only leak I found a reason to start worrying or I can disregard it and continue basic troubleshooting (change cable and plug my ISP to another port)
I have an AIR-LAP1242AG-A-K9, serial number FTX1623B0RX. I just need to know how old this unit is. (I haven't attached it to our Cisco account, so I can't open a TAC for it.)
Boot Version 12.4.13.0 IOS Version 12.4(23c)JA5Mini IOS Version 3.0.51.0
The support and registration pages for the E4200 wireless router ask whether I have a V1 or V2 router. There is no place on the actual router that identifies it as V1 or V2, and the Cisco Connect application doesn't display this infomation either. What I do know is the following:
Model name: Linksys E4200 Model number: E4200 Serial number: 01C10C18104423 Firmware version: 1.0.03 build 14 Software version: 1.4.12005.2
How do I determine if this is a V1 or V2 router? The software updates are version specific.
I am not very computer literate, so this will seem like a stupid question. How do I determine whether a computer has wireless connectivity?
I have a Dell Dimension 9200 running Windows Vista that I bought in 2007. Previously, I have connected it to the internet using an ethernet cable to my router, but this is no longer possible now that my new computer is using the ethernet connection. I want to establish a wireless connection between my older Dell Dimension 9200 and my router, but I don't know how to find out whether the computer is capable of wireless connectivity.
I have an E1000 linksys router. I am trying to determine the admin password. I have looked at seeral entries regarding this. I do not have CICSO connect installed. Not sure why. The router works fine. I have the CD that came with the router. I have also downloaded current version of connect software. Both of them want to config the router. The first item asked for is the admin password. I know I press reset button. I am trying to retrieve password without doing that.
I used the AP 1552 Link Calculator to determine the coverage area of my AP deployment, however I have some concerns.I would like to know what the maximum radio range refers to when using an omni-directional antenna. Is this distance the radius or diameter of the coverage area? [code]
I have the wireless controller 5508 and many AP1261 registered on site. It detects a lot of rogue access points around. I would like to find out geographic location of these rogue access points. Is it possible?
We are trying to setup a WAP4410N with 2 SSID's. One SSID for our private network and the other for guest internet access. On the VLAN and QoS page there is a setting for priority. What would be the suggested values for this setting? We obviously want our private network to receive priority over our guest network.Also, does VLAN Tag setting need to be on Tagged to determine private from guest traffic?
I have a site with a 1700 router connected to a 2960 switch. For some of the computers on site I want to determine how much traffic is local to the LAN and how much is going across the WAN.
One strategy I've come up with is to reset the interface counters on the switch ports to the machines in question and after some time compare the total bytes in and out of the interface with netflow data from the router. My only concern is that netflow is not completely accurate about the amount of data that has passed through an interface.
Is there a better or more accurate way to accomplish my goal?
I'm the sole IT worker at this company and I specialize in everything but big, corporate networking so here's a dumb question. How do I determine the IP address of one of our two switches? I need a list of MAC addresses of connected devices so I can relabel all the cables that were mislabeled (and this is a managed switch). For the other switch, which was put in by someone who knew what they were doing, you just type ss3900 into a browser and tada, 3com Superstack 3900 login so apparently someone did some fancy DNS stuff or whatever.
For this HP Procurve, the idiot before me who got fired for completely screwing up everything didn't leave any documentation or labeling and didn't use the same IP address as the Cisco switch that was pulled out. Obviously the switch is invisible to my PC from an IP standpoint
I'm doing some throughput calculation test between a wireless client and a wired desktop computer, and I'm a bit confused about the result i've got. According to the client's card and the WLC, the client is connected to 802.11g, at a speed of 54Mbps. To perform my test, i'm using IPERF (available here [URL) The result is as follow:
As you can see, i'm far away the maximum theorical speed of 802.11g. Any software wich is able to test the throughput of a connection? The client wireless card is a Dlink DWA-652 and the wlc is running code 7.0.116, the AP is a cisco LAP1042N.
I I use a Linksys E3000 router. Sometimes when I look at the network map I see a device called "Unknown." It appears as though the two notebooks sometime are going through this device to access the Linksys E3000. (I've checked when both notebooks are on and I can determine what devices are connecting directly to the router and what devices are going through this unknown device.) Is there any way to determine what this unknown device is?
J've just bought an Asus RT-N66U router and I'm setting up a broadband credit card machine to go into it (rather than transmitting data over the phone line).I need to know what the status of DHCP and MAC are on the router but I'm not sure how to find it.DHCP needs to be on and MAC needs to be off.
If I do a speed test (bandwidthplace.com) while connected to a remote locations 1140 standalone access point, the download/upload speeds are roughly 100kbps. There are no other devices connected to the access point at the time. Wired PCs on the LAN that the access point is connected to are not having a problem.Pings from the laptop, through the access point, to our central WAN router are at <10ms.The WAN circuit (remote location to headquarters) is 5Mbps. No congestion.Circuit out from headquarters to I'net is 50Mbps. No congestion.Access point and router interfaces show no errors or collisions, etc. The configuration is the same as 28 other standalone access points in 28 different LANs on the WAN. They have no problems.
What is the maximum throughput of a 2600 AP when using CLient Link 2.0. I see that the datasheet states that it is 450mbps, however, from my understanding of transmit beamforming (client link 2.0), when traffic is "beamformed" to a client it cannot use spatial multiplexing on the same antenna as well. If this is the case, with the 2600 only having 3 transmit antennas, does this mean that the max throughput to a client when using clientlink is 300mb ?
If not, how the AP transmit at 450mbps and beamforms at the same time.
I have two WLC5508 controllers running 7.0.230.0, which having the two of them probably is inconsequential because all the APs are added to only one controller. The problem I'm facing is that I have several LAP1552E's deployed throughout my facility, and I have several that are doing Ethernet bridging to some Cisco switches using G0. In this, I have a PC at the end of one of these switches, and using Iperf and PingPlotter to get some metrics, and what I'm seeing is >400ms latency with <3 Mbit throughput to the PC. On the 802.11a radios I have 18 Mbit set as mandatory, with everything below disabled and everything above Supported, with all MCS indexes under 802.11n enabled.
My channel is set to 161 with a 40 MHz channel-width, and a power of 3 configured.After many days of trying different power settings, channel settings, and such, I can't get better results than above and my channel utilization stays > 75% at all times. I do have video cameras attached to the other bridges switches, and have video QoS set to Bronze and the cameras configured to ~ 1 Mbit bandwidth maximum. Also, average RAP-MAP distance is ~ 1100 ft and average MAP-MAP distance is 400 ft, with the longest RAP-MAP being 1400 ft and MAP-MAP distance being 875 ft.
I have 2 - 1410 bridges ( point to point) between two buildings approx 600' apart. They seem to be aligned well ( Signal -52dBm, SNR 41 ) and have been very reliable. However, I cannot seem to run more than 26Mbps thru them.is there any recommended tweaking that can increase my throughput ?
I have 4 - WAP 321's in an office all connected to a POE gigabit switch. Each WAP shows connected at 1GB but when I am sitting within a couple feet of the WAP and attempt to transfer a 972MB file it takes around 9 minutes to complete. speeding this up? All 4 AP's are setup as a cluster as well.
I recently bought a WRT160NL router. I have a 10/10 Mbps internet connection, but when I am connected via the router it only gives me ~2.5/1 Mbps speeds. Connecting my computer directly to the "wall" results in 10/10 Mbps speeds. I have tried connecting to the router both wireless and by wire, it makes no difference. The internal wired and wireless speeds are fine, as I have copied files over the internal switch and via the wireless network at relatively high speeds. I have not fiddled with any connection settings except creating a few permanent DHCP leases.
I have a E4200 V1 with 1G internet connection, when i connect my PC, with a cat6 cable, directly to the modem the download speed can upto 800Mbs, but when i connect through E4200 to the modem it down to 100Mbs.
I have a E2500 connected via LAN to my network via a switch or hub through a sonic wall and into the modem out to the internet. The problem is that I am only getting +/- 5Mpbs Down and +/-7 Mbps up through the router.
If I connect my computer to the network with out going through the router my speeds are more in the range of +/-28 Mbps down and 16Mbps up. I have been working with Linksys support but they have not been able to assist me with this yet! Is there any configuring I should be doing at the firewall or to the router to tell it to open up the port for faster speeds?
