Question

cisco 877w laptop can only connect with guest-mode enabled

Asked by: awilderbeast

hi all, i have set up my 877w with the below config,

and im trying to connect two laptops, i have the SSID hidden at the mo, i know that hiding the ssid doesnt do much for security but it can deter novices im sure

so both laptops see unnamed network, i type in the SSID and the password and one of them connects fine, the other will not connect,
if i enable guest-mode then both can connect, thats the only difference
i cant fatham why this would be?

anyone shed some light?

dot11 ssid XXXX
 vlan 10
 max-associations 5
 authentication open 
 authentication key-management wpa
 wpa-psk ascii XXXX
 
bridge irb
 
interface Dot11Radio0
 no ip address
 ip nat inside
 ip virtual-reassembly
 no ip route-cache cef
 no ip route-cache
 no dot11 extension aironet
 !        
 encryption vlan 10 mode ciphers tkip 
 !
 broadcast-key vlan 10 change 45
 !
 !
 ssid XXXX
 !
 speed basic-1.0 basic-2.0 basic-5.5 6.0 9.0 basic-11.0 12.0 18.0 24.0 36.0 48.0 54.0
 channel 2412
 station-role root
 no cdp enable
!
interface Dot11Radio0.10
 encapsulation dot1Q 10
 no ip route-cache
 no cdp enable
 bridge-group 10
 bridge-group 10 subscriber-loop-control
 bridge-group 10 spanning-disabled
 bridge-group 10 block-unknown-source
 no bridge-group 10 source-learning
 no bridge-group 10 unicast-flooding
 
interface Vlan10
 no ip address
 bridge-group 10
 bridge-group 10 spanning-disabled
 
interface BVI10
 description WIRELESS BRIDGE
 ip address 192.168.150.1 255.255.255.0
 ip access-group WIRELESSCLIENTS in
 ip nat inside
 ip virtual-reassembly
 no ip route-cache cef
 no ip route-cache
 
bridge 10 protocol ieee
bridge 10 route ip

                                  
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Asked On
2009-08-25 at 02:01:58ID24679132
Topics

Wireless Networking

,

Network Routers

,

Network Cards & Adapters

Participating Experts
2
Points
500
Comments
9

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Answers

 

by: mikecrPosted on 2009-08-25 at 08:16:52ID: 25178472

What operating system and version are you trying to connect with that is causing the problem?  Also, what wireless card is is using?

 

by: awilderbeastPosted on 2009-08-25 at 08:18:17ID: 25178487

well both laptops are on vista premium

both have in built cards from their laptop manufacturers, id have to delve a bit more to find out what cards they where

but the working ones a samsung laptop and the non working is a toshiba one

 

by: ddiazpPosted on 2009-08-25 at 08:25:09ID: 25178571

One of my laptops (dell) won't connect to my 851 Wireless if I set security to WPA, but works with WEP, perhaps an IOS issue.

Which encryption mode are you setting? try WEP first

 

by: mikecrPosted on 2009-08-25 at 08:25:28ID: 25178577

What service pack on Vista?

 

by: mikecrPosted on 2009-08-25 at 08:27:57ID: 25178602

Go to the Vista section of this document and see if this fixes the problem.

http://technet.microsoft.com/en-us/library/bb726942.aspx

 

by: awilderbeastPosted on 2009-08-25 at 08:29:12ID: 25178617

well i had them both set to tkip ciphers now i changed them to aes-ccm

so using WPA2 now

its not the cisco cos one of the laptops can connect with or without guest-mode enabled

mine the one that works is sp1 ill just check the other one moment the other is sp1 too

cheers

 

by: mikecrPosted on 2009-08-25 at 08:32:00ID: 25178644

Check that document I sent you in the Vista section and change the configuration and see if it connects then.

 

by: awilderbeastPosted on 2009-08-25 at 08:59:58ID: 31620043

that did it manually adding it and check the connect auto if not broadcasting box ticked worked

it says their is security vulnerabilities by doing this though, what are these?

Thanks

 

by: mikecrPosted on 2009-08-25 at 09:27:36ID: 25179299

The probe packets from the laptop are looking for an access point and the access point will respond with it's SSID in the return answer to the probe. Unfortunately a security problem but none the less an inherent problem with wireless altogether. As long as your doing WPA2, you'll be fine.

20120131-EE-VQP-002

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