Wireless N Broadcasting Question

I recently purchased my 1st wireless N router (Linksys of course and I noticed that it's broadcasting 2 signals (one I named N and the other I named NMedia but I can't remember why I named it that). Why are there 2 different signals?
Message Edited by Cusseta on 12-16-2009 02:52 PM
Message Edited by Cusseta on 12-16-2009 02:56 PM

Well, it's easier to tell if you have posted the exact model and version of the router as printed on the label underneath the router.
It seems as if you have one of those dual-radio wireless routers. It has two radios built-in to allow simultaneous communication on 2.4 GHz and 5 GHz. Both radios can be configured independently and by default use different SSIDs. This way you can "select" if you want to connect on the 2.4 GHz or 5 GHz band depending on the SSID you choose. Usually, the "Media" SSID is the 5 GHz band because in average it's not so busy as the 2.4 GHz band and thus is better for media streaming.
If you don't want two SSIDs and you have rather let your computer pick the band to use (which is a decision of the wireless device driver in the computer) you can set both SSIDs identically, with identical wireless security. Then each wireless device can pick the band.
Other wireless N routers are dual-band but not dual-radio. The radio can be configured for 2.4 GHz or 5 GHz but you cannot use both at the same time. Some other wireless N routers are only 2.4 GHz single band.

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Message Edited by AceH on 03-20-2008 02:21 PM

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If Windows is the primary connection software for your wireless, simply open Start-->Control Panel-->Network Connections
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Your WRT310N should be able to connect to a wireless n adapter at a maximum of about 200 to 270 Mbps. Note that this is a "connection" speed, not a data throughput speed. Currently wireless n users are reporting data throughput speeds in the range of 20 to 70 Mbps (megabits per second). This would be about 2.5 to 8.5 MBps (megabytes per second) of actual data transfer.
To maximize your wireless speed, you must improve your wireless connection.
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In your router, try a different channel. There are 11 channels in the 2.4 GHz band. Usually channel 1, 6, or 11 works best. Check out your neighbors, and see what channel they are using. Because the channels overlap one another, try to stay at least +5 or -5 channels from your strongest neighbors. For example, if you have a strong neighbor on channel 9, try any channel 1 through 4. For wireless n, make sure your standard and wide bands are at least 2 channels apart. For example try standard band on channel 11, and wide band channel 9.
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Also, in the computer, go to your wireless software, and go to "Preferred Networks" (sometimes called "Profiles" ). There are probably a few networks listed. Delete any network named "linksys". Also delete any network that you do not recognize, or that you no longer use. If your current network is not listed, enter its info (SSID, encryption (if any), and key (if any) ). Then select your current network and make it your default network, and set it to automatic login. You may need to go to "settings" to do this, or you may need to right click on your network and select "Properties" or "settings".
If the above does not fix your problem, download and install the latest driver for your wireless card.
Some users have reported improved wireless performance by switching to WPA or WPA2 encryption. (Note: Windows XP users will need SP3 to run WPA2.)
If you continue to have problems, try the following:
For wireless n routers, try setting the "n Transmission Rate" to 162 Mbps, and the (wireless g) "Transmission Rate" to 54 Mbps.
If you still have trouble, download and install the latest firmware for your router. After a firmware upgrade, you must reset the router to factory defaults, then setup the router again from scratch. If you saved a router configuration file, DO NOT use it.
Hope this helps.
Message Edited by toomanydonuts on 09-27-2008 03:27 AM

881W Wireless not broadcasting

Hi,
I have a 881W and I have it working on the internet, my issue is I cannot seem to get the wireless working. i have sessioned into the internal AP, setup everything I thought I needed through CLI. I then went into CCP and told the SSID to broadcast, but I do not see the network to connect to it. I have looked through the Cisco documentation and it is just not making sense to me, I have done what I believe it has said to do, but it does not go through a complete setup...it is quite broken up with links to other pages and other chapters of other configuration guides.
Here is my config below, thank you for the help!!! Router first then AP...
ROUTER
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
hostname rtlynva-wyndhurst
boot-start-marker
boot-end-marker
logging message-counter syslog
logging buffered 51200 warnings
enable secret 5 $1$ajy3$9xxPp7F35NGOHmtyLOr3v/
no aaa new-model
crypto pki trustpoint TP-self-signed-34574604
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-34574604
revocation-check none
rsakeypair TP-self-signed-34574604
crypto pki certificate chain TP-self-signed-34574604
certificate self-signed 01
30820255 308201BE A0030201 02020101 300D0609 2A864886 F70D0101 04050030
2F312D30 2B060355 04031324 494F532D 53656C66 2D536967 6E65642D 43657274
69666963 6174652D 33343537 34363034 301E170D 31313031 30343032 35343037
5A170D32 30303130 31303030 3030305A 302F312D 302B0603 55040313 24494F53
2D53656C 662D5369 676E6564 2D436572 74696669 63617465 2D333435 37343630
3430819F 300D0609 2A864886 F70D0101 01050003 818D0030 81890281 8100A6B9
53B6E265 A15554AA B99534F4 50A2020C 25B6961B 4AD0719F 9F6C1004 F5445531
A04CC0DB 2128D5B8 AFF9AD8E 7A73DE60 D6530CE2 1F7C7DD1 2EF91A11 7F6F38B8
C853F54D B119589C E7479515 FC233F20 9CD98562 D3787BFA 014279D6 E058E885
F498A1FE 00E03FE2 69DF9EC8 B784F644 2348C423 2BA30D7F 1561A520 6A1B0203
010001A3 8180307E 300F0603 551D1301 01FF0405 30030101 FF302B06 03551D11
04243022 82207274 6C796E76 612D7779 6E646875 7273742E 796F7572 646F6D61
696E2E63 6F6D301F 0603551D 23041830 16801463 4EF9DCBC 3B65F277 ADB58EC1
FAB84002 F9D3ED30 1D060355 1D0E0416 0414634E F9DCBC3B 65F277AD B58EC1FA
B84002F9 D3ED300D 06092A86 4886F70D 01010405 00038181 005971CF 7B232539
A2E311B3 FF961AED F5192840 94B6B961 361C08CC D6AF21C6 91131D67 CAF2A11F
C14E7053 BDEC3273 8871D4F3 59EF954A 8A2D9BCF 6FCCE062 13C4C60A 655BD8D7
038C67EE 6BDAFC6F C1B99A82 E7AB5244 40FC00C6 480FE807 5303BCE1 8B375D2E
43680186 5857756A B32A1AB3 2F8780B4 E0FD7067 73CD496B CE
        quit
ip source-route
ip dhcp excluded-address 192.168.1.1
ip dhcp pool LAN
   import all
   network 192.168.1.0 255.255.255.0
   default-router 192.168.1.1
   domain-name lynch.us
   dns-server 68.87.73.246
   lease 0 2
ip cef
no ip domain lookup
ip domain name yourdomain.com
username admin privilege 15 secret 5 $1$W6jT$K0cl.ncxyQf4Nw7yy4ZU.0
archive
log config
hidekeys
class-map type inspect match-all ccp-invalid-src
interface FastEthernet0
interface FastEthernet1
interface FastEthernet2
interface FastEthernet3
interface FastEthernet4
description $FW_OUTSIDE$$ES_WAN$
ip address dhcp client-id FastEthernet4
ip nat outside
ip virtual-reassembly
duplex auto
speed auto
interface wlan-ap0
description Service module interface to manage the embedded AP
ip unnumbered Vlan1
arp timeout 0
interface Wlan-GigabitEthernet0
description Internal switch interface connecting to the embedded AP
switchport mode trunk
interface Vlan1
description $ETH-SW-LAUNCH$$INTF-INFO-HWIC 4ESW$$FW_INSIDE$
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1452
ip forward-protocol nd
ip http server
ip http access-class 23
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
ip nat inside source list 101 interface FastEthernet4 overload
access-list 100 remark CCP_ACL Category=128
access-list 100 permit ip host 255.255.255.255 any
access-list 100 permit ip 127.0.0.0 0.255.255.255 any
access-list 101 permit ip 192.168.1.0 0.0.0.255 any
no cdp run
control-plane
banner exec ^C
% Password expiration warning.
Cisco Configuration Professional (Cisco CP) is installed on this device
and it provides the default username "cisco" for one-time use. If you have
already used the username "cisco" to login to the router and your IOS image
supports the "one-time" user option, then this username has already expired.
You will not be able to login to the router with this username after you exit
this session.
It is strongly suggested that you create a new username with a privilege level
of 15 using the following command.
username <myuser> privilege 15 secret 0 <mypassword>
Replace <myuser> and <mypassword> with the username and password you
want to use.
^C
banner login ^C
Cisco Configuration Professional (Cisco CP) is installed on this device.
This feature requires the one-time use of the username "cisco" with the
password "cisco". These default credentials have a privilege level of 15.
YOU MUST USE CISCO CP or the CISCO IOS CLI TO CHANGE THESE
PUBLICLY-KNOWN CREDENTIALS
Here are the Cisco IOS commands.
username <myuser> privilege 15 secret 0 <mypassword>
no username cisco
Replace <myuser> and <mypassword> with the username and password you want
to use.
IF YOU DO NOT CHANGE THE PUBLICLY-KNOWN CREDENTIALS, YOU WILL
NOT BE ABLE TO LOG INTO THE DEVICE AGAIN AFTER YOU HAVE LOGGED OFF.
For more information about Cisco CP please follow the instructions in the
QUICK START GUIDE for your router or go to http://www.cisco.com/go/ciscocp
^C
line con 0
login local
no modem enable
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport input all
line vty 0 4
privilege level 15
login local
transport input telnet ssh
scheduler max-task-time 5000
end
rtlynva-wyndhurst#
AP CONFIG
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
hostname ap
enable secret 5 $1$BCSZ$aSQUBKS8ktvSFOoPDmfB80
no aaa new-model
dot11 ssid EARL
   vlan 1
   authentication open
username admin privilege 15 secret 5 $1$9YSG$N5f/uYAu.aNWKjXKG9SRD1
bridge irb
interface Dot11Radio0
no ip address
no ip route-cache
ssid EARL
speed basic-1.0 2.0 5.5 11.0 6.0 9.0 12.0 18.0 24.0 36.0 48.0 54.0 m0. m1. m2. m3. m4. m8. m9. m10. m11. m12. m13. m14. m15.
station-role root
interface Dot11Radio0.1
encapsulation dot1Q 1 native
no ip route-cache
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
interface GigabitEthernet0
description the embedded AP GigabitEthernet 0 is an internal interface connecting AP with the host router
no ip address
no ip route-cache
interface GigabitEthernet0.1
encapsulation dot1Q 1 native
no ip route-cache
bridge-group 1
no bridge-group 1 source-learning
bridge-group 1 spanning-disabled
interface BVI1
ip address dhcp client-id GigabitEthernet0
no ip route-cache
ip http server
no ip http secure-server
ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag
bridge 1 route ip
banner login ^CC
% Password change notice.
Default username/password setup on AP is cisco/cisco with privilege level 15.
It is strongly suggested that you create a new username with privilege level
15 using the following command for console security.
username <myuser> privilege 15 secret 0 <mypassword>
no username cisco
Replace <myuser> and <mypassword> with the username and password you want to
use. After you change your username/password you can turn off this message
by configuring "no banner login" and "no banner exec" in privileged mode.
^C
line con 0
privilege level 15
login local
no activation-character
line vty 0 4
login local
end

Chuck,
    From the AP config, it's not being told to broadcast. session back to the AP and the command guest-mode under dot11 ssid EARL
Cheers,
Steve
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I am not very good at wifi... but we just setup a wifi system. Someone brings up an question... In a single conference room...let's say...about 1000 square feet conference room. Currently I have a AP mounting on the top wall. It is working fine. But let's say...there will be fifty..more or less people using connected to the single AP, would that affect the performance a lot?
Or if we add additional 2, or 3 more APs. WOuld that help the network performance/...or any kind of performance? The person mentioned about "density".
After renewing my CCNP...I will definitely buy a book to study for the wireless cert!
Thank you for your help!
Takami Chiro

To piggy back on Steve's comment...
All depends on the content. If you plan to do video and voice in this room on many of the 50 concurrent clients you will for sure feel some pain. It all goes back to how the 802.11 medium works. Its a half duplex medium. So only ONE client can talk at a time, "listen and then speak".
Normal web browsing you could get away with 1 ap, but would advise 2. If this is video / voice perhaps 3 aps. Low power, non conflicting channels. I might even advise direction anetnnas to better direct the coverage in the room. Again, I am not there or know what the room looks like but just making suggestions.

Broadcast questions

I've just been asked if I could shoot a debate for possible airing on our local Comcast provider. We're just in preliminary talks now, but figured I should get a jump on the game if I can. I've done DVD only work, but through reading these forums, have learned many things about video for broadcast. I know that Comcast will be picky about what format it's delivered on, either a tape or HDD, so that's something I'm asking about. But what else am I forgetting? I know coloring is major for broadcast, so really for the first time, I'll spend a while coloring the whole thing (the debate will be in a large room with florescent lighting, so I figure all I'll really be doing is taking out the florescent color and giving the speakers some life back in them). So besides delivery and coloring, is there anything else I should watch out for? I'll be shooting at least 2, hopefully 3 cameras in HDV, then downconverting to DV on import since I don't think Comcast would air this in HD anyways. Will I need to include timecode or countdown at the beginning? I know I'll need to add Bars and Tone, but how long and at both the start and finish? A lot of these questions I figure I need to discuss with someone at Comcast, but seeing as how right now I'm just working on a MacBook Pro with my camera as my deck (bad, I know, but when I start getting bigger jobs that require better equipment, then I'll upgrade), I want to plan what I'll need to rent, buy, or borrow for this gig early so I'm prepared.
Any details on broadcast work would be great, thanks.
-Brian

Believe it or not, I did a performance recently on our local Comcast station, and asked them what format they were recording on and if I could get a dub and they told me they were recording to a DVD recorder and nothing else, for the broadcast master for their show!! They were nice enough to make me a VHS copy (informing me that in fact this was SUPER VHS - ooooo!)
Whether or not your station has similar standards or lack thereof, it will behoove you to take this opprotunity to learn about mastering. The station should be able to provide you with their specs and recommendations. As far as what you can do on your end -
turn on Range Check to see if any clips need to have the broadcast filter applied. FCP's broadcast filter will clamp down on luma and chroma (brightness and color sturation) to bring the image into broadcat safe specs. Usually this is done for non-cable broadcast signals, to keep the brightness and chroma from "bleeding" into the range of the frequency bandwidth used by the audio portion of the VHF or UHF signal. The Brodcast Safe filter can be merciless with your image detail if applied aggressively, and you may find better results can be achieved with the Color Correction filters.
I usually stripe my master tape with TC starting at 00:58:30:00. This allows 90 seconds for bars, slate and countdown before starting the program at 1:00:00:00, which iis generally the standard in North America. I like to build a sequence that will mirror my master tape, adding the bars, slate, and countdown in the sequence, rather than in the mastering window. There is a nice film countdown available in the Cinema Tools extras folder on the FCS discs somewhere, if you didn't already install it. I believe the file is called Head Leader-DV NTSC, or some such thing. There will be a countdown to -2 seconds with a pop that is supposed to occur 2 seconds before program start - in case you ever wondered where 2-pop came from...
Something that many beginners do not consider is that the bars and tone are supposed to be a reference to your program, not just some extra thing to stick onto your tape at the beginning. For instance, If you have taken the time to correct your color for broadcast safe, the default bars generator from final cut will have white levels outside of broadcast safe. Any engineer that receives your tape who is doing his or her job will see these bars and then correct the signal according to those bars, which will result in dull highlights and gray blacks. If your program is already broadcast safe, you should put a filter on the bars to match, to avoid "setup" being added to your video unnecessarily.
Same is true with the tone level. The bars will have a default reference tone level of -12. If analog dubs are made, the practice generally is to set the analog tone level to 0VU - on the analog scale, 0 is in the middle, with usually 5-10dB or more of headroom above 0VU, wehreas on the digital scale, 0dB is the absolute ceiling, above which any signal will be clipped. Anyway, I usually mix my audio so my average dialog is between -18 and -12, with peaks going to -9 or so. In this case I use a reference tone of -20 on my master, so that setting the incoming tone level to 0 on analog equipment will use the headroom above 0VU. If you have mixed your audio in this way, then you may get better results by changing the tone level in your mastering sequence. If your audio levels in FCP are peaking closer to 0dB on the digital scale, you should use the default -12 tone on the bars. There are differing shcools of thought on what is really the right standard, and different types of audio warrant different approaches, depending on dynamic range, how the master willl be used, etc.
Hope this helps -
Max

SSID Broadcast question

Ok, so today I thought that I would tighten my security up a little, so I turned off SSID broadcast. So everything was fine, I shut down, when I booted back up, and it would not find or connect to the network. I had to turn broadcasting back on in order to connect, how to I get this to work?
Windows Vista
WRT56GL V1

I used to recommend that "SSID Broadcast" be set to "disabled" for security reasons. However, newer cracking methods have made this old trick practically worthless. Currently, I recommend leaving "SSID Broadcast" set to "enabled". This will help your computer find and lock on to your router's signal.
Your primary wireless protection comes from using a good encryption method such as WPA or preferably WPA2, and from using strong passwords. WPA or WPA2 passwords (keys) should be at least 24 random characters (capital letters, small letters, and digits), and they should not contain any spaces. With this level of encryption, you do not need to worry about broadcasting your SSID.

Wireless N Broadcasting Question

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