Two network connections

Is it possible to be connected to two network connections at the same time?

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Two network connections simultaneously?

Hi,
I want to do screen sharing with presenters, so I can use SnapzPro on my MacBook to record their screens on their Mac. Can the Mac that is presenting be connected to my Mac via a crossover cable, and to the wireless network via AirPort so they can access the internet? The reason for this suggestion is that when I tried to use a wireless network with ARD, it was far too slow (screen redraw once every minute or two), so I'm wondering if I can use a crossover cable between my Mac and the presenter's Mac and then use ARD 2.2 to do the screen capture, while the presenter's Mac is also connected and they can use regular internet access via AirPort.
Can a Mac have two simultaneous network connections like this?
Any ideas/comments?
Thanks,
Russ Conte

Yes, the Mac can be connected simultaneously to both ethernet and Airport. And, as C.Moser indicated, any G4 class or newer machine will auto sense the direct connection.

Using two network connections at the same time?

Dears,
I have two available Internet connections:
1- a DSL connection which I'm connected with AirPort to,
2- and a 3G USB modem connection (Huawei E156G if you need to know) which I setup through Network Preferences.
Can I specify anywhere which connection an application should use at a given time, or all the time?
For instance,
a- Safari and Mail should use exclusively (or at first try) the AirPort connection,
b- and iGetter (for faster downloads) should use the 3G connection
Let me point out that I setup the 3G modem in Network Preferences (and that's the way I connect to it).
By the way, if someone has trouble (which I had) setting up the Huwaei E156G on Snow Leopard, I can help.
Thanks in advance for any help.
Abdelaziz

By default, the top-most service in the Network preferences gets the internet connection. All internet related traffic is sent on that interface.
As far as using both for internet at same time, I'm not sure how to do that. You might search for setting up routes. Routes in the network tell it to send certain things to a certain interface, but I don't know how to differentiate a download from web surfing, etc.
You might also want to try posting that question on the [Unix|http://discussions.apple.com/forum.jspa?forumID=735] forum.
Message was edited by: Barney-15E

Routing Applications through two network connections

I have a network wireless card which I use for internet and at the same time I use the airport to access the network printers in the LAN. When I try to make a remote desktop connection it goes through the wireless card and I need it to go through the airport.
I tried making airport the first one in the list, which solves the problem of connecting to the remote desktop, but then I cannot not access internet.
Is there any way one can route a certain IP address to go through an exact connection?
Thanks in advance for your help.
Maria

Network routing is based on destination IP address, not per-application.
Therefore it is not possible to tell Application A to use one connection while Application B uses another.
It is, however, possible to send all traffic for a specific IP address over one connection or another, but it won't matter which application tries to access that address, they'll all go the same way.
However, for the most part, this happens automatically. Since you only have one default gateway address on your system, the interface that gateway is associated with will be used for all non-local traffic, while each interface will handle the traffic for its own subnet.
What this means is that if your wired ethernet port is configured for 192.168.1.x/24 with a router address of 192.168.1.1 while your AirPort link is set for 10.1.1.x/24 then any traffic for anything in 10.1.1.x will go over the AirPort and anything else will go over the wired port.
The only reason to override this would be if you had a different router on the 10.1.1.x network that you want to use to get to specific addresses. For example, if you wanted to route to 123.45.67.89 via a wireless router at 10.1.1.1 you'd run the command:
route add 123.45.67.89 10.1.1.1
now all traffic destined for 123.45.67.89 will go over the wireless link to the router at 10.1.1.1 rather than the default router on en0.

Is there a way to connect to two networks simultaneously?

Here is my scenario:
I am an audio technician who travels from venue to venue for work have to constantly switch between two networks to do my job. I use MAC OS w/ the most current version 10.9
Example:
99% of the time, there is venue provided wireless internet via DHCP, w/ no wired option available. I log onto it for all my internet related productivity. At the same time, I need to stay connected to a manual/static ip local network to remote & monitor audio hardware (wireless mic's, dsp drives, mixing consoles, etc). I have the ability to use either a wired or wireless connection for the local manual network (new airport express, or wired line).
I go to my network preferences in my system prefs and can see a green confirmation indicator that both networks are indeed connected. However, depending on which network i give priority to by "setting service order", the other network drops. For example, today Im using a wired line to remote/monitor my audio systems on my manual/static ip network and can stay connected as long as i set my ethernet connection at the top of the 'service order' list. As soon as I go to launch my Safari browser it says I am no longer connected to the internet, eventhough my network system preferences show I am still connected. The only way I can get the internet to connect is to reset the 'service order' and put wi-fi back on top. As soon as I do this though, my manual wired audio network loses it's connection.
I should note some settings. Today's networks:
wireless (internet):
ip: 10.100.1.159
sm: 255.255.0.0
router: 10.100.255.254
wired (audio network):
ip: 192.168.0.128
sm: 255.255.255.0
router: 192.168.0.1
Is there a way to stay connected to both, regardless of the 'service order'? I have a brand new airport express if putting something like that in-line helps in anyway.
Best,
Brian

Is there a way to stay connected to both, regardless of the 'service order'?
There can only be one active connection at any given time, no matter how many networks you may be connected to.

Connecting to two networks at the same time

Hi Kadin,
I am looking for the same answer for a long time. I have two situations that requires to connect to two different metworks and that is when I travel with my portable Linksys router WRT54GC .
1. I stay at a hotel with a wireless Internet network connection and I try to use the network to access the Internet and then (2) I also need to access my external Maxtor harddrive to which I am connected through my portable router WRT54GC .
2. I have an almost identical situation but instead of the hotel network now I have a brand new T-Mobil cell phone made by ITC, which is called Wings and it uses a new way to connect my laptop to the Internet by using a Windows Mobile 6 Internet-share connection, which basically connects my laptop to the T-Mobile network and assigns it a IP address.
The problem that I have is that in both cases I can connect to each one of the networks separately but not simultaneously.
Any advise as to how this can be done. I also tried the Wireless WET54G as a bridge with similar negative results.
Thanks,
Pole

Ok not real clear on your setup, but here is the "networking answer" why you can not connect to two networks.
A device must have an IP address on the same subnet of the device you want to establish a connection or an IP route must be known to the network routers, since your internal address are most likely in the reserved private range, no internet router is not going to know how to deliver the packets to the correct hosts.
the simple answer is assign a secondary IP address to the network adapter on your laptop.
In the windows IP address properties for secondary address you can not set a default gateway. Windows only has 1 default gateway.
good luck
jwm

Connect to two networks, ethernet(LAN w/o internet), wireless(w/ internet)

so i'm trying to connect to two networks, a wireless and a wired one
the wireless(which connect to an access point) is a network which allows me to connect to internet, and the wired(regular router) one is a small home local network, which does not connect to internet.
if i just have the wireless one on, unplug/disable wired one, i can connect to internet just fine, but if i do plug in ethernet cable, then all of the sudden i can't connect to internet anymore.
in my Network Coonections window, it does show that the wireless one has "Access to Network and Internet" while the wired one has "Access to Network only". I'd assume that the computer is smart enough to find its way to internet, but apparently not.
is there a way to set a preference, so vista tries to find internet conncetion thru wireless first, before go on to the wired network?
I konw this is technically possible, because on my mac, i can set in such way that it takes certain connection first
thanks in advance

I think I am getting it but still no joy.
On the WiFi connection to FIOS Router I have manually set metric to 1.
On Same PC in Ethernet I have removed gateway and set a metric to 10.
Before I did this connection to Internet was very slow when the Ethernet cable plugged in and Interface Enabled. After removing gateway and setting metrics access to Internet AOK.
I have working Homegroup, network printer but no Internet access from Hardwired PC.
Cannot ping FIOS router @ 192.168.1.1 from hardwired PC. Destination host unreachable.
NMAP Quick Scan 192.168.1.* never sees 192.168.1.1
So, I'm still not routing properly.
ken wood it director tlw sports company, llc the states
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Anyone can help me?
I somehow tried to delect the waste items in my computer. However, I accidently delected Wireless internet LAN. After that, my wireless won't work anymore. How can I search and do the download so my wireless is back to work? What
is the whole name?
Thanks,
Yangpal

Connect to two networks?

I'm using my next door neighbors wi-fi (splitting the bill with him). I'm trying to use my AE in (Bridge? mode) connected to my Lacie external harddrive. I set up the AE "internet" for "Off (bridge mode)" and my external harddrive shows up under "disks".
My problem right now is that I don't know how to connect to both the neighbors Wi-fi internet network and my AE to wirelessly access my external harddrive? Is it possible to connect to two networks? Or is there a better way of doing this?
Any help is greatly appreciated.
Thanks

Hello ianbroste. Welcome to the Apple Discussions!
In order to "combine" networks, your 802.11n AirPort Extreme Base Station (AEBSn) would have to be configured to extend the wireless range of your neighbor's router. This would (potentially) only work if his router is also another 802.11n AirPort.

HT4262 I have two networks one each in two cities. Both are named the same but require different passwords. I am at my second location but cannot connect to his wifi network. How do I delet one network so I can connect to my second network?

I have two networks one each in two cities. Both are named the same but require different passwords. I am at my second location and cannot connect to this wifi network. How do I delet one network so I can connect to my second network?

Just go to the wireless network preferences and empty out all the stored wireless networks.. then scan and connect to the local wireless.
Select them and tap the - button below it.
Once they are emptied out.. it might be good to reboot the computer with the remember networks unchecked.
Start with a clean slate.

How to check the Network Connectivity between two systems.

Hello Everyone,
Please let me know different ways to check the network connectivity between two systems other than ping/traceroute commands.
Thank You.
Edited by: 835435 on Jan 20, 2012 11:43 AM
Edited by: 835435 on Jan 20, 2012 11:44 AM

Use snoop.
snoop -d <nic> - will give requests and replies coming/going in/out of the specified NIC.
snoop -d <nic> <MAC address of the target host> - will give requests coming from the required host.

I have purchased two movies on the store that at the time were unable to download, due to a full start up disc. I have now freed up the space and the remainder of the movies wont download. It gives me the error code 8003. I have a good network connection.

I have purchased two movies on the store that at the time were unable to download, due to a full start up disc. I have now freed up the space and the remainder of the movies won't download. It gives me the error code 8003. I have a good network connection and the space for the movies, but cant seem to get it to work. Anysuggestions? It doesnt even let me delete the downloads and start again.

1. iTunes won't offer cloud downloads for songs that it "thinks" are in your library, even if it "knows" the files are missing. If you've exhaustively searched for the missing files and there is no prospect of repair by restoring to them to their original locations, or connecting to new ones, then delete that tracks that display both the missing exclamation mark and are of media kind Purchased/Protected AAC audio file. Don't hide from iTunes in the cloud when asked, close iTunes, then reopen. You can download from the cloud links or iTunes Store > Quicklinks > Purchased > Music > Not on this computer > All songs > Download all.
2. Why? Not sure, perhaps 3rd party tools or accidental key presses combined with previously hidden warning messages when trying to organize the library. There is a hint that using the feature to downsample media as it is synced to a device may also be involved, though I've not replicated it. Whatever the reason a backup would protect your media.
tt2

I am trying to get on Facebook and it tells me it can not connect. I have wi-fi access but each time I sign in it tells me to check my network connection and try again. Can anyone tell me what I need to do? I do have two bars on my Wi-Fi.

I am trying to connect to face book, every time I sign in with my apple Id it tells me it can't connect and to check my network connection and try agian. I do have WI-FI, and I have two out of the three bars. I can get on the Internet, can someone tell me what else I can do?

Hello tecnophobe,
Thanks for the question. When encountering iTunes Store connectivity issues, the following resources provide the best solutions:
Can't connect to the iTunes Store
http://support.apple.com/kb/TS1368
iTunes: Advanced iTunes Store troubleshooting
http://support.apple.com/kb/TS3297
Thanks,
Matt M.

Can't open TCP connection when two network adapter are enabled

Hi all,
I've an applicaiton that connect using "TCP Open Connection". The applicaiton is running on a computer have two network adapters configured to be on two different network.
When I start the application, if both network adapters are enabled, connection is not created (timeout). When I disable the network adapter which is not configured for the network I need, connection is succesfull.
- How can I choose which adapter to use to open the connection, as LabView seems enable to select the good one.
- Or I can I disable a network adapter (just for the connection time)
I'm using LabView 8.5 Full on Windows XP.
Thanks for your help

This is generally a routing issue. The OS will route connections to your primary network if it is not a direct route. For example, one network is 10.3.4.x (primary network) and the other is 192.168.1.x.with a subnet of 255.255.255.0. Now, let's say you want to reach a device with an 192.168.2.x address. The OS will try to route this through the primary network but is has no route to reach the 192.168.2.x subnet. Therefore your connection fails. You can add a permanent route to your computer to force specific address ranges to specific NICs. Use the ROUTE ADD command which is part of the OS. If you are trying to reach the computer using a name instead of the IP address the issue is basically the same but a but more challenging to resolve. The OS will do th elookup on your defined DNS servers. They generally do not have knowledge of local private networks and therefore can't resolve the name. In this case you need to create a more involved network infrastructure to update the name server. Probably not something that is feasible to do.
Mark Yedinak
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot

Connecting two networks with wireless bridges

Hello all,
We are trying to create a true CAN. We have 2 sets of 2 buildings each. One set is on the 172.23.x.x network and the other set is on the 172.25.x.x network. Each set has routing in place to go out over their respective MPLS circuits (which will be removed once this project is done). Each set also has their own vtp domain each containing ~30 vlans.
Right now, there is a wireless bridge at each set of buildings and they can reach each other fine according to the vendor. I am trying to figure out an efficient way to tie these two networks together keeping their current vlan and local topology in place.
Site 1:
Vlan 1: 172.23.1.x
Wireless bridge: 172.25.1.x
Site 2:
Vlan 1: 172.25.1.x
Wireless bridge: 172.25.1.x
Any help is appreciated. The idea is that all traffic from site two will now traverse the wireless bridge and use all resources and routing available at site 1.

OK wel now the only solution left for you re-designing the IP addressing or if you want same ip address either increase the scope or range of ip address per vlan or use DHCP server to provid Half the address to both sides. but the interface connecting interface must be a Layer 3 or Layer 2 ports.The only concern should be DHCP server vlan over lapping can be manage by Configuing VTP (Client/Server) .
(Switch) ====wireless------------------wireless====(switch)
Trunk (Layer2 port) Trunk (Layer2 port)
and for vlan just if one dhcp server nothign to worry and incase of multiple server just load balance it will also provide the reduncency in you network.
other option is simple using L3 approach and change the ip address only for resourches you want other people to access.

I am using an Airport Extreme for wireless and a Netgear VPN Switch for wired connections. How do I get the two networks to connect?

I am using an Airport Extreme for wireless and also have a Netgear VPN Switch (FV5318) for internal wired ethernet connections. How do I get the two networks to connect to each other?

Tesserax, I would like to keep the Airport Extreme in nplace before the Netgear FVS318 switch because I am using all of the 8 ethernet outputs distributed to 8 differerent locationsl This way I can just use one of the LAN outputs from the Airport to feed the FVS318. Here is what I think I am hearing you say:
Tne reason why the wired and wireless devices are not communicating is because the FVS318G is also a DHCP server and in conflict with the AEBS.
To remedy the situastion here is probably what I need to do in order:
1. Change the LAN IP Address of the Netgear FVS318G to be the same subnet of the Airport Extreme.
2. Then, disable the Netgear FVS318G as a DHCP server.
3. Make sure the ethernet cable from the LAN port of the Airport Extreme connectis to the LAN port of the Netgear FVS318G.
4. Restart everything.
Can you provide me the steps I need to take to get the right IP addresses from the Airport Extreme to put into the Netgear to fix the conflict? I have the Airport Utility. I also have two airport express hot spots, and two Apple TVs in addition to computers attached to the 8 ethernet lines.
Thank you.
Steve

Two network connections

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