Question about Cisco Aironet 1242ag 802.11a/b/g Wireless Access Point

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Cisco 1242ag broadcast multi SSID issue

I have a 1242ag wireless AP configured for multiple SSID's and vlans. All works fine. The issue I have is when I save the config & reboot or power down the AP for any extended period of time and power it up again, it stops broadcasting? the dot11radio0 interface is up and the config is as I left it. The only way I can get it to work again is to rebuild the config. Am I missing something?

I can't past the config due to the limits on the forum. Which wort of points out the first limitation with the Beta.

thanks





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It stops broadcasting the SSID? Make sure it's configured to broadcast the SSID firstly... secondly, test whether it is actually working but just not broadcasting the SSID.

Set a client PC to the same SSID and get all the parameters identical (encryption, user/pass etc). Try connecting again. If it connects then it's just the SSID that isn't working... if there is no joy, then it is just the SSID that isn't broadcasting, not the whole AP.

Also, enable some debugging for the radio0 while it is not working. It might shed some light.

Posted on Aug 20, 2008

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Posted on Jan 02, 2017

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1 Answer

When I enable the vlan option in an EAP9550 I lose wireless access


Bruce,

Is the goal to use a different VLAN for each access point (AP)? If so then you will need to configure each NetGear port to use the same VLAN as the AP that is connected to it. You will then need either a switched virtual interface (SVI) for each VLAN on the NetGear or a trunk port (802.1q) from the NetGear to the Cisco. I'm not sure the NetGear will support SVIs but it will support trunks. An SVI basically creates a gateway for each VLAN's subnet. For example, let's say AP1 uses VLAN 10 and the subnet is 10.0.10.0/24 while AP2 uses VLAN 20 with a 10.0.20.0/24 subnet. The NetGear will need 2 SVIs, one for each VLAN/subnet. The first SVI for VLAN 10 can be configured with IP address 10.0.10.1/24 while the second SVI can be configured with 10.0.20.1/24 for VLAN 20. These IP addresses will be the gateway for each VLAN. Finally, the NetGear would need to act as a router and route each VLAN's subnet to the Cisco device. Once again I don't believe the FS726TP supports this.

The other solution would be to create a VLAN trunk port between the NetGear and the Cisco device but I believe the Cisco RV042 does not support trunking. If it does the trunk would be configured to carry all of the VLANs to the Cisco device which would then have SVIs created on it.

If neither of the above is possible you would need to use the same VLAN for each AP and each of the interfaces on the NetGear and Cisco devices which negates the need for the VLANs.

I hope this helps.

Mar 13, 2014 | EnGenius Computers & Internet

1 Answer

Multiple ssid and encryption problem


If you are protecting your SSID's with passwords every device that connects or tries to connect will have to know or have that password. Usually password protecting the SSID's is not needed if you don't broadcast them.

Dec 07, 2013 | D-Link Air Premier DAP-2360 Wireless...

1 Answer

How to config to work wireless


bridge irb
!
interface Dot11Radio0
no ip address
!
broadcast-key vlan 1 change 45
!
!
encryption vlan 1 mode ciphers tkip
!
ssid cisco
vlan 1
authentication open
wpa-psk ascii 0 cisco123
authentication key-management wpa
!
ssid ciscowep
vlan 2
authentication open
!
ssid ciscowpa
vlan 3
authentication open
Step 5 bridge-group number
Example:
Router(config-subif)# bridge-group 1
Router(config-subif)#

Assigns a bridge group to the subinterface.
Note When the bridge-group command is
enabled, the following commands are
automatically enabled, and cannot be
disabled. If you disable these commands
you may experience an interruption in
wireless device communication.

bridge-group 1
subscriber-loop-control
bridge-group 1 spanning-disabled
bridge-group 1
block-unknown-source

May 21, 2013 | Cisco 878 GSHDSL Wireless Router for Small...

1 Answer

I just got a ps3 and i cant get i on line it says wrong ssid how do i check this


Hi,

Improve the Fixya.com experience for everyone by voting!

The SSID (Service Set IDentifier) is a token which identifies a 802.11 (Wi-Fi) network. The SSID is a key which is set by the wireless network administrator. You must know the SSID to connect to a 802.11 wireless network. However, the SSID can be discovered by network sniffing/scanning. By default, the SSID is part of the packet header for every packet sent over the WLAN.

SSID access points continuously broadcast radio signals which are received by client machines if enabled. Based on the automatic or manual configuration, the client can connect to the access point. A SSID is generally 32 bit long, but when displayed to the user, it is projected into a human readable ASCII format. Multiple access points can possibly share same SSID if they are for the same wireless network. Many wireless access points support broadcasting multiple SSIDs, permitting the formation of Virtual Access Points. Such Virtual Access Points partition a single physical access point into many logical access points, each of which can have a special set of security and network settings.
SSID Security Issues

Every user of the network must configure the SSID into their system. If the network administrator seeks to lock a user out of the network, the administrator must change the SSID of the network, which will require reconfiguration of the SSID on every network node. Some 802.11 NICs allow you to configure several SSIDs at one time.

ssid example SSID
Default SSID's

Most 802.11 access point vendors allow the use of an SSID of "any" to enable an 802.11 NIC to connect to any 802.11 network. This is known to work with wireless equipment from Buffalo Technologies, Cisco, D-Link, Enterasys, Intermec, Lucent, and Proxim. Other default SSID's include "tsunami", "101", "RoamAbout Default Network Name", "Default SSID", and "Compaq".

Every time a client connects to the wireless network, the SSID is communicated in plain text format, which can easily be sniffed by eavesdropper using sniffing applications like Kismet. Hence, additional security techniques are required to be implemented in order to enhance the wireless security.

All the best

Ben

Jul 03, 2011 | Arris SURFboard SBG900 Wireless Router...

1 Answer

I'm trying to connect another computer to my home wireless network. When editing my profile it asks for the Network name (SSID). What's (SSID?


Hi,

Improve the Fixya.com experience for everyone by voting!

The SSID (Service Set IDentifier) is a token which identifies a 802.11 (Wi-Fi) network. The SSID is a key which is set by the wireless networkmag-glass_10x10.gif administrator. You must know the SSID to connect to a 802.11 wireless network. However, the SSID can be discovered by network sniffing/scanning. By default, the SSID is part of the packet header for every packet sent over the WLAN.

SSID access points continuously broadcast radio signals which are received by client machines if enabled. Based on the automatic or manual configuration, the client can connect to the access point. A SSID is generally 32 bit long, but when displayed to the user, it is projected into a human readable ASCII format. Multiple access points can possibly share same SSID if they are for the same wireless network. Many wireless access points support broadcasting multiple SSIDs, permitting the formation of Virtual Access Points. Such Virtual Access Points partition a single physical access point into many logical access points, each of which can have a special set of security and network settings.
SSID Security Issues Every user of the network must configure the SSID into their system. If the network administrator seeks to lock a user out of the network, the administrator must change the SSID of the network, which will require reconfiguration of the SSID on every network node. Some 802.11 NICs allow you to configure several SSIDs at one time.

ssid-example.png
Default SSID's Most 802.11 access point vendors allow the use of an SSID of "any" to enable an 802.11 NIC to connect to any 802.11 network. This is known to work with wireless equipment from Buffalo Technologies, Cisco, D-Link, Enterasys, Intermec, Lucent, and Proxim. Other default SSID's include "tsunami", "101", "RoamAbout Default Network Name", "Default SSID", and "Compaq".

Every time a client connects to the wireless network, the SSID is communicated in plain text format, which can easily be sniffed by eavesdropper using sniffing applications like Kismet. Hence, additional security techniques are required to be implemented in order to enhance the wireless security.

All the best

Ben

Jun 06, 2011 | Computers & Internet

1 Answer

Can't connect to my Cisco Aironet 350 wireless Access Point


Did you setup and configure your Cisco aironet 350 directly from your laptop? I would verify the IP configuration on your laptop and make sure that your Default Gateway and subnet mask and DNS are set correctly. Give it a static address on the same subnet and see if it can see the router. Hope that helps!

Cheers!

J the Guru

Sep 09, 2017 | Cisco Aironet 350 Series Wireless...

1 Answer

How can I change the default management vlan (vlan 1) to another vlan # in Cisco Aironet 1242G wireless AP


create a new vlan (eg vlan 10)
then ensure that the ethernet port is the same bridge group number as the new vlan (bridge-group 10)
do the same for the wireless port

then shut down vlan 1

Oct 06, 2009 | Cisco Aironet 1242ag 802.11a/b/g Wireless...

1 Answer

Configure cisco aironet wifi


if ur using IOS autonomous AP, then u'll need to configure the bvi interface to get an ip address and then enable the interface. once it has an ip, u'll need to configure the ssid, vlan, etc - choices include doing so with the CLI or web page GUI. U'll need to enable the built-in web server then u can access it via the web interface to setup the ssid, any vlans, radius, etc. good luck.

Jan 17, 2008 | Cisco Aironet 1131AG 802.11a, 802.11g/b...

3 Answers

My PC is not detecting the wireless Access Point


is your wireless adapter still ok? or is your wireless PC switch on? Try to check and then let me know.

Oct 11, 2007 | Cisco Aironet 1131AG 802.11a, 802.11g/b...

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