Cisco :: Using 1240 AP With 3COM Switches
Feb 23, 2012
I have several autonomous 1240ag AP's that I need to enable a second ssid(Guest and VLAN2) for guest access and while I have configured the AP's according to the driections, I am not able to connect to the second ssid(Guest), but it is broadcasting. When I check the logs, I do not even see my laptop or any other device for that matter, trying to authenticate, what am I missing? I can see, connect and get an IP from the first ssid(Production and VLAN1), which is on the native VLAN and my 3COM 3C17203 switch port(14) is tagged for both VLAN's. Although I am sure that this would work better with a Catalyst switch, but it is not in my budget to replace all 4 of these, but I need this to work.
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Nov 21, 2011
I'm replacing 2 3COM 4500 Swithes with the SG300-52 Cisco switch. We have 3 VLANs, 10, 20, 100. The switch is set for Layer 3 and I have setup DHCP relay. what settings i should set on the Cisco for the following setups:
3COM Setup
#
interface GigabitEthernet1/0/1
[Code].....
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Jan 11, 2012
I'm adding a 2nd 3com 2920-SFP switch to our network, and was wondering how to connect them up in series(?) for more available user ports. They have 4 SFP ports, and wanted to know if this was how its done.
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May 30, 2012
We’ve just begun the transition from our old 3Com switches to new Cisco switches and we’ve encountered interoperability problems as we start the transition.Goal: Extend 6 VLANs (each representing an IP subnet) via fiber from a port on the 3Com 5500G-EI to a port on the Cisco SG-300-52
We assign an IPV4 address to the Cisco SG-300-52. We can successfully ping/web-manage at this address if we do a temporary copper jumper from a 3Com switch to the Cisco. IP address is in the subnet assigned to VLAN7•2) At the 3Com side, the fiber port is set as “hybrid” and is passing VLAN 1 untagged; VLANs 3-8 tagged•3) At the Cisco side, the fiber port is set as “trunk” and is defined with VLAN 1 untagged and VLANs 3-8 tagged.
If I try to change the management interface on the CISCO from VLAN 1 to VLAN 7 (as I would on the 3Com), I lose connectivity over the temporary copper connection•B)
If I remove the temporary copper jumper from the Cisco (keeping the “working” management IP address) and create the fiber link between the 2 switches, I lose connectivity to the management IP , If I set the 3Com fiber port to “access” and make the fiber connection, I can ping the management interface – but of course, I can’t pass the other VLANs to untagged access ports on the Cisco – and it has the fun side benefit of messing with IP management settings on other 3Com switch stacks attached to the 5500G-EI. However, it does demonstrate that we can get network traffic communicating over the fiber link between the 2 switches.
How I can proceed to a) have the management IP address in the IP subnet defined on VLAN 7 while passing the other VLANs to access ports on the Cisco? BTW, I’m a networking neophyte (it’s a very small part of my job and I do it infrequently), so I prefer to use GUI management to CLI options, although I can perform CLI configuration if presented with the right commands.
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Oct 25, 2012
Our company currently have a 3com 2816 connected to a 3com 4800G through a trunk. The 4800G connects to the PBX and to the ip phones/computers. We are currently using vlan1 (192.168.100.n) for data and vlan 3 (192.168.101.n) for voice , Ip addresses are being issued by a DHCP server. Each user has an assigned IP phone and it has an ethernet port that connects to each computer. This setup has been working properly until I purchased an SG300 and replaced the 3com 2816.
The ip phone is showing a bad gateway and the PC are getting an ip address of 192.168.101 (which is for voice). Theoretically it should work, but what is weird is, it seems the SG300 trunking with the 3com 4800G is not working. Is it possible that it is on ISL mode rather than dot1q?I also saw its running RSTP, should I changed it to classic STP?How do I fix this or what troubleshooting should i do?
The SG300 is configured as a layer 2 switch. Configuration for the trunk below:
interface gigabitethernet27
spanning-tree link-type point-to-point
switchport trunk allowed vlan add 3-4
macro description switch
macro auto smartport type switch $native_vlan 1
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Sep 25, 2012
I would like to ask if it is possibe to stack a 3Com 3cr17161-91 to a layer 3 Cisco Switch? The two will be stacked using the avaialble SFP modules.
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Jan 10, 2013
I have problems too when I connect 3com and Cisco.
I have 2 5500g 3com switches connected with 2 links. If LACP is disable, this causes serious problems and STP not works.
Logically , the link, is a port trunk with all the vlans permitted. One switch has STP enable and the other RSTP. Why this not works fine? I need to configure MSTP maybe? PVSTP is not allowed on this switches.
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Apr 1, 2012
I have my network with severals SG300 switches.I have one of them like my core switch working in layer 3 mode. With 2 vlans and vlan interfaces to each vlan.Everything is working ok.But now i have to connect one 3com unmanage switch that have host from vlan 1 and 2. How should i connect this switch to my Cisco sg300 switch?
[code]...
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Mar 31, 2013
AP not booting and am not able to boot. Xmodem file system is available.flashfs[0]: unable to allocate available block.
The system has been interrupted, or encountered an errorduring initializion of the flash filesystem. The followingcommands will initialize the flash filesystem, and
[Code]....
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Mar 8, 2011
In a multiple SSID setup, can Aironet 1240 & 1250 series AP supports different WEP key for different SSID
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Mar 4, 2013
I am working on setting up a new WLAN infrastructure. I have set up different SSIDs connected to different VLANs, in the AP. I also want to use Windows NPS for authenticating users on the different SSIDs, with different authentication methods based on which SSID the user/device is connecting to. To do that, NPS needs to get the SSID, but the Aironet 1240 only sends its MAC address in the Called-Station-Id. I have read a bit about this, and found out that if I have a WLC, it will add the SSID to to the Called-Station-Id. But since we do not have a WLC, I am trying to get this to work anyway. Is it possible to modify the Called-Station-Id to include the SSID on an Aironet 1240? If not, is it possible to send the SSID as a separate attribute that can be read by the NPS?
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Mar 27, 2011
Is there anyway to monitor client who is downloading , using the most bandwidth in Cisco wireless environment ? i have 1240 ap and 4400 controller environment.
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Jan 13, 2013
I am looking into upgrading a customers wireless network and they are looking at using a few 1240 access points for both internal and external connections. Their question is can one access point support both channels simultaneously? They would like to connect an antenna on the inside of the building on the 5ghz channel and another externally on the 2.4ghz channel.
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Sep 27, 2012
We have four VLANs that need to be accessible to wireless devices. The VLANs serve the following groups: staff, student, guest, phone
We are currently using a WEP/MAC authentication for staff and phone wireless networks.
I am looking for what your recommendation would be to provide reasonable level of wireless security, particularly with the staff network, but at the same time not require a high level of management, ex. managing active and inactive MAC addresses for MAC authentication. We have the following components available - 1240 APS, Windows AD, a 4402 WLC, and 6 campuses, and outdated Cisco ACS.We need to provide connectivity to Cisco wireless phones, laptops, iPads, cell phones.
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Jul 14, 2008
Cisco 4404 WLC
AP 1240 - LWAP
Wireless client receives a DHCP address from central DHCP server fine. Unable to route outside of own subnet . Continuous ARP WHO HAS (Default Gateway addr) TELL (client IP) messages being received. WLC running OS 4.2.99.0.
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Oct 18, 2012
We successfully use this oid on our Aironet 1240 series AP's to list the dot11 associations to the AP:1.3.6.1.4.1.9.9.273.1.2.1.1.18 (cDot11ClientSubIfIndex).However, that oid does not work on our Aironet 1140 series AP's. Any equivalent oid?
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Apr 26, 2012
I'm trying to find a document in Design Zone about configuring a Wireless AP and I wasn't able to find it. I have a good experience configuring switches, routers and firewalls in CLI and this is the first that I have my hands on APs (1240 AG).
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Mar 6, 2011
I just started a project to make a guest wireless network available at every site in my enterprise. Guest wireless networks are currently available at some sites. Two key goals of this project is to enable WPA/WPA2 encryption and to develop a web based registration/autentication solution. All of the sites have a mixture of 1230, 1240, and 1250 autonomous access points. What do I need to do/get in order to make this happen?
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May 10, 2012
We are using WLC4402 for our Aironet 1240AG access points. The clients are connecting to the access points and are authenticating to the RADIUS server. I am seeing the logs in Server 2008 but they are being rejected due to Network Policy on the NPS server.
Where do I see the Authentication Type on the WLC4400 or the 1240's? In order for the clients (authenticated via Active Directory user) I have to set the Authentication in the NPS Connection Request Policy to "Allow clients to connect without negotiating an authentication method".
I do not have a certificate on the server and my method options are MS-CHAP-v2, MS-CHAP, CHAP, PAP, SPAP, and allow without negotiating. This RADIUS server was moved from Server 2003 IAS to Server 2008 NPS and there were no issues in Server 2003 IAS. I have all authentication methods allowed and it still gives me the error below. Only when I check "Allow clients to connect without negotiating an authentication method" it allows the authentication to proceed.
Client Machine:
Security ID: NULL SID Account Name: Fully Qualified Account Name: OS-Version:
Called Station Identifier: 00-17-a2-87-54-00: SSID NAME
Calling Station Identifier: 00-41-96-b6-e3-27
NAS:
NAS IPv4 Address: 192.168.90.24
NAS IPv6 Address: -
[code]...
Reason: The user attempted to use an authentication method that is not enabled on the matching network policy.
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May 30, 2012
I typed such commands:Code:
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Apr 8, 2011
dell xps t500
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Mar 6, 2013
I have 3com router and it is working fine. The issue is that when I am taking the router out of the electricity and reenter it back it will not save my settings and I will have to log in again to change the settings.
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May 17, 2011
I just bought WAP4410N from about 3 days ago, I would like it to work as a wireless repeater to my 3com router model 3CRWDR100A-72. In the router setup page I enabled WDS, made a search for the wireless networks and I found the WAP signal and the router already got its MAC address. I went to AP mode in the WAP4410N, enabled the WDS repeater and made a site search for the router and got its SSID and MAC address.
Although all the above steps, everytime I connect any client to the WAP4410N I can not connect to the internet, all what I got is just the IP of the WAP and subnetmask without any default gateway nor DNS
In addition I tried to setup the WAP as wireless client epeater, but the same thing hapen, I can not connect to the internet through the WAP.
I am using WPA encryption on the router but I did not get any notification to enter the pass key during the setup of the WAP, which is strange for me!
Do I have to change my 3com router to linksys one as the 3com is not compatible with the WAP?
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Oct 9, 2012
I have a 3COM 3CRUS2475 24 Port PoE Switcher that I connect a number of Crestron control units to.All of a sudden yesterday I could no longer see the network on any device including Ipads, Laptops etc.I have rebooted several times and restarted all of the access points around the house but still cannot see the network. I have also connected a WAP directly to the Switch with a new LAN and still nothing.
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Sep 4, 2012
I am trying to set up my 3Com wireless Access Point that was given to me. I have searched for software to set it up but can't find any.I have read somehwre that the software doesn't even work on Windows 7 anyway.know the default ip adress of this router or how to get into the config pages to set it up.
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Jan 24, 2005
I just had to reinstall windows 2000 with service pack 4 on my Latitude C800 and now can't get the control panel to recognize my modem. The manual selection option doesn't display an option for the 3Com 3cn3acx556 modem. Do I need an additional driver? If so where can I find it? I've tried the Dell download site and the 3Com and US robotics sites all with no luck.
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Oct 14, 2012
I am trying to trunk between a 3Com 4800g and a Cisco 3500xl. I can get the a PC that connects to a vlan 1 port on thecisco switch to connect to the 3com switch and get connectivity. However, I cannot get anthing on the cisco switch that is on vlan 2 to connect and get dhcp. I am not a 3com guy, so I am not familiar with the command and configs.We have 2 vlans on both switches: Vlan 1 is Admin and Vlan 2 is Student.
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Jul 1, 2012
I have setup both Vlans on 3com and cisco. but it seems they cant talk to each other.ive setup both on trunking mode?
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Aug 30, 2012
choosing a core switch, to replace a swich 3com model 4924, its main function is to support a 4-LAN switch cisco 2960 (100 users) and a ring cluster of 12 servers.obs. Current 3com core switch has 56 Gbps performance and 41.6 million packets per second.
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Oct 2, 2003
I have at the core a CISCO 4503 and need to connect various 3COM 3300/4400/4900 access switches thru fiber. The problem is that the Cisco core 4503 switch fails to recognize only the 4900 3com switches ie the link status shows down. The fiber multitude link is tested and OK.The modules on both the switches ie 1000baseSX are also tested and ok.
The Cisco switch has a 6port gb ic with 1000baseSX moules and the 3COM 4900 has a 4-port 1000baseSX module.
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Sep 13, 2012
I am tryıng to confıgure port base Vlan on 3com S7900E switch. There are already 9 of them confıgured but one is missing and I need to add 1 more. I have done this on cisco routers but cant get my head around 3com commands.
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Sep 18, 2012
How to add a Linksys router for wireless access to a 3Com switch. model 3CGSU08A I have two choices for routers E2000 and a WRT54GL which one would be best and how to setup?
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Jun 12, 2012
We need to implement VLANs on my company's network. I have 3750 L3 swtich, ive setup 3 vlans for testing. ive setup SVI everything.now how do I connect it to 3com that will also use VLANs. should I set trunk port of cisco and 3com? or no need?
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