UCCX 8.0 switching network deployment from LAN to WAN

I have a UCCX 8.0.2 HA setup that was installed in a LAN enviroment. I now need to change that to a WAN setup. A good documnet would be great. Thanks.

/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0in 5.4pt 0in 5.4pt;
mso-para-margin:0in;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:"Times New Roman";
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;}
For information about HA Deployment over WAN, see these sections of the 8.0.1 Installation Guide PDF:
http://www.cisco.com/en/US/docs/voice_ip_comm/cust_contact/contact_center/crs/express_8_0/installation/guide/uccx801ig.pdf:
"Important Considerations" on page 10
"Performing Initial Setup for the Second Node" on page 72http://www.cisco.com/en/US/docs/voice_ip_comm/cust_contact/contact_center/crs/express_8_0/installation/guide/uccx801ig.pdf
This related information might also be useful:
WAN/LAN Restrictions 
http://www.cisco.com/en/US/docs/voice_ip_comm/cust_contact/contact_center/crs/express_8_0/configuration/guide/uccx801ag.pdf
Expected Behaviour During a Failover
http://www.cisco.com/en/US/docs/voice_ip_comm/cust_contact/contact_center/crs/express_8_0/reference/guide/uccx80_eb_failover.pdf
Please let us know if these docs provide the information you need.
Linda

Similar Messages

  • Wireless network separate from LAN?

    Hi,
    I have an airport express and i wanted to know it if it is possible to have the wireless network separate from the lan. We have meetings and wanted to provide internet access to clients but do not want them to be able to "see" and access our computers on our lan.

    tileshop, Welcome to the discussion area!
    Sorry but all wireless clients of the AirPort Express (AX) can access anything connected to the LAN.

  • [solved] Troubleshoot ssh with keys (works from LAN, not WAN)

    I'm trying to set up ssh so that I can connect to my work computer from home. It is pretty much essential that I keep the work box as secure as possible at all times. (So I can't disable the firewall, come home and test it because IT would not be at all happy.)
    I'm not sure if this is an Arch question, a Fedora question or a general Linux/networking question.
    The work box is running Fedora 17. It has a firewall eerily like the "simple stateful firewall" described on Arch's wiki. It is running sshd. Public key authentication is enabled. No other form of authentication is enabled. It has a rule allowing ssh connections.
    My laptop is running Arch. It has a firewall very like that described on the "simple stateful firewall" page. It has a couple of rules allowing stuff I need at home (printer and something I had to enable for the LAN).
    Initially, I was given an internal ip address. I got this working fine i.e. I could ssh into the box from my laptop while sitting next to it in my office over the LAN. I'm using the default form of key pair generated on Arch (i.e. rsa) and am using gpg-agent with ssh support in lieu of ssh-agent to manage keys. Pin entry is using the qt front end as I'm on KDE. (I adapted KDE's config so that it starts gpg-agent with ssh support for the session so that I didn't end up with two instances.)
    Once the firewall was in place and sshd was running, they gave me a public ip address. At this point, no port was opened in their firewall to allow WAN connections but I tested the public ip address from within the LAN and it once again worked fine.
    Once I'd confirmed the machine could connect out after getting a public ip, they arranged for the port to be opened for ssh. However, I cannot connect to the machine from home.
    $ ssh -vvi .ssh/id_rsa [email protected]
    OpenSSH_6.1p1, OpenSSL 1.0.1c 10 May 2012
    debug1: Reading configuration data /etc/ssh/ssh_config
    debug1: /etc/ssh/ssh_config line 22: Applying options for xxx.xxx.xxx.x
    debug1: /etc/ssh/ssh_config line 32: Applying options for *
    debug1: auto-mux: Trying existing master
    debug1: Control socket "/home/username/.ssh/[email protected]:nn" does not exist
    debug2: ssh_connect: needpriv 0
    debug1: Connecting to xxx.xxx.xxx.x [xxx.xxx.xxx.x] port nn.
    debug1: connect to address xxx.xxx.xxx.x port nn: Connection timed out
    ssh: connect to host xxx.xxx.xxx.x port nn: Connection timed out
    xxx.xxx.xxx.x is the public ip (works fine from LAN)
    nn is the port number
    username is my user name (same on both machines)
    The options for the host from ssh_config are:
    AddressFamily inet
    Compression yes
    ControlMaster auto
    ControlPath ~/.ssh/socket-%r@%h:%p
    and the only generic option applied to all hosts is just a line to insist on protocol 2 which I think is default now anyway but I followed the wiki and specified it to be sure.
    What have I missed? My networking knowledge is pretty basic at best. (I got this far using Arch's wiki, Fedora's documentation and a little trial and error. That seemed to work well but now I've added google and still can't figure it out. All the hits I get concern cases where the LAN connection works but authentication fails over WAN. But I'm not getting that far - it looks like my work box doesn't respond at all...)
    Last edited by cfr (2012-09-25 22:12:06)

    So I discovered I'd also managed to kill off LAN access as well as the machine's ability to use any sort of DNS... (I did say it needed to be secure...)
    Anyway, I fixed that, reestablished working ssh from LAN but still can't get it to work from WAN.
    Question: if ShieldsUp! reports the port as stealthed does that mean that the port has not actually been opened? So the campus firewall is blocking the connection? Because if so, I'm knocking my head against a brick (fire)wall to no purpose whatsoever...
    I figure it can't be the software firewall else I'd not be able to connect on the LAN. And it is a public ip address so there's no NAT translation required...

  • BGP route selection from LAN to WAN

    Hi,
    I am going to implement a multihome internet connection to two different ISP. Before implementing in real network, I have prepared the same in GNS3 and testing. Subnet 10.x.5.0/24 should take R1 to outside from LAN and 10.x.6.0/24 should take R2 to outside from LAN.
    Below is my configuration;
    HSRP between R1 and R2 towards LAN. R1 is the primary HSRP device.
    R6 is the host (example) and subnet .5.0/24 and .6.0/24 are connected to R6.
    R6 is sending a default route to HSRP VIP.
    R1 is advertising subnet 10.x.5.0/24 and R2 is advertising subnet 10.x.6.0/24
    iBGP is configured between R1 and R2
    From Internet to LAN:
    From router 5 (exam.: Internet) traffic is divided in to two routers. traffic for 10.x.5.0/24 coming to R1 and traffic for 10.x.6.0/24 coming to R2. This is absolutely fine. What i expected.
    From LAN to Internet:
    I need traffic from 10.x.5.0/24 should take R1 to go to internet (outside) and from 10.x.6.0/24 should take R2 to go to Inernet (outside).
    I have tried with higher Local Preference on each router but is not working. All traffic from R6 (i.e. LAN) to outside is taking only R1 to go outisde.
    Could any one can help on how I can share traffic for 10.x.5.0/24 & 10.x.6.0/24 divided in two Routers from LAN.
    Diagram is attached.

    As answered in other post, hosts belong to LAN2 (subnet 10.x.6.0/24) can have default gateway set to R2 (R2 could be HSRP active node) now R2 will have route from eBGP (AS300) as well ibgp session (from R1). We can tweak BGP attribute to prefer eBGP session. One good option is to set weight as we want to prefer AS300 routes locally to the router and not on R1. Similarly on R1 put weight for AS200 routes.
    Regards,
    Akash

  • ADF Mobile : Switching Networks

    JDeveloper 11.1.2.4.0
    ADF Mobile extension: 11.1.2.4.39.64.44
    Hello,
    I've noticed in my ADF Mobile app that if the phone switches networks, (say from WiFi to 3G), my web service calls work and return data ok, but a message pops up with:
    "Cannot connect to <host> on port <port>:java.net.ConnectionException:Connection refused."
    I'm guessing this has something to do with the IP address of my phone changing when it switches networks? Anyone seen this before? Any help would be much appreciated.
    Cheers, Rich.

    What is the <host> in the message? Is it 127.0.0.1?
    Use 10.0.2.2 instead.
    Using the Emulator | Android Developers

  • LAN switched network

    anyone know what the average bandwidth for a company based on LAN games and Online games are?
    (it could be any game)
    what factors must take into account to design a LAN switched network based on hierarchical model?
    cheers

    Disclaimer
    The  Author of this posting offers the information contained within this  posting without consideration and with the reader's understanding that  there's no implied or expressed suitability or fitness for any purpose.  Information provided is for informational purposes only and should not  be construed as rendering professional advice of any kind. Usage of this  posting's information is solely at reader's own risk.
    Liability Disclaimer
    In  no event shall Author be liable for any damages whatsoever (including,  without limitation, damages for loss of use, data or profit) arising out  of the use or inability to use the posting's information even if Author  has been advised of the possibility of such damage.
    Posting
    Joseph, How can I minimun latency in LAN as well no packet loss? with protocols, switches,...How packet transmission latency is reduced when all of hosts are connected to access switches on 100Mbps? why not 10 or 1000Mbps?
    "... or gig." = 1000 Mbps
    Why not 10 Mbps?  Because transmission latency, for any size packets is reduced as bandwidth is increased.
    How no packet loss?  With sufficient bandwidth so there's little need to queue, and if you do need to queue (which again we want to avoid), sufferient buffering so packets aren't dropped.
    on the other hand, imagine for a LAN game you need 1Mbps bandwidth. There are 4 VLANs(12,24,36,48 users in each VLAN) and you must use hierarchical model( access,distribution and core layers) and just are allowed to use VLAN,Trunk,VTP,DTP and Rapids PVST+.How can I reache to this amount of bandwidth in LAN?
    Why must you use hierarchical model?  Modern data center designs, which are aimed at minimum latency, often no longer use the 3 layer design.
    If you have multiple VLANs, and we cannot route, hosts won't be able to contact hosts on other VLANs.
    Don't understand your last question.

  • Auto switch from LAN to WIFI

    I am looking for some software or a way to auto switch from LAN to WiFI if there no internet connection.
    This history of this is we have a XP machine that runs a process and its just left on for this and nothing else, with no keyb or mouse connected and we just remote to it if needed.  Our internet connection has issues and quite often drops out, but local
    LAN obviously stays up, we have a WiFi connection to another site opposite that is ok, question is does anyone know any software that will for example ping a external host every so often and if there is no response will auto switch from LAN to WiFi connection
    automatic.
    Thanks. 

    Please see: 
    What is wireless AutoSwitch?
    Carey Frisch

  • How to switch iPhone 4S from GSM network to CDMA network????

    I want know how to go about switch networks n how much it costs

    You don't. If you want to use a CDMA carrier, you have to buy a CDMA phone made for that carrier.

  • Query: Best practice SAN switch (network) access control rules?

    Dear SAN experts,
    Are there generic SAN (MDS) switch access control rules that should always be applied within the SAN environment?
    I have a specific interest in network-based access control rules/CLI-commands with respect to traffic flowing through the switch rather than switch management traffic (controls for traffic flowing to the switch).
    Presumably one would want to provide SAN switch demarcation between initiators and targets using VSAN, Zoning (and LUN Zoning for fine grained access control and defense in depth with storage device LUN masking), IP ACL, Read-Only Zone (or LUN).
    In a LAN environment controlled by a (gateway) firewall, there are (best practice) generic firewall access control rules that should be instantiated regardless of enterprise network IP range, TCP services, topology etc.
    For example, the blocking of malformed TCP flags or the blocking of inbound and outbound IP ranges outlined in RFC 3330 (and RFC 1918).
    These firewall access control rules can be deployed regardless of the IP range or TCP service traffic used within the enterprise. Of course there are firewall access control rules that should also be implemented as best practice that require specific IP addresses and ports that suit the network in which they are deployed. For example, rate limiting as a DoS preventative, may require knowledge of server IP and port number of the hosted service that is being DoS protected.
    So my question is, are there generic best practice SAN switch (network) access control rules that should also be instantiated?
    regards,
    Will.

    Hi William,
    That's a pretty wide net you're casting there, but i'll do my best to give you some insight in the matter.
    Speaking pure fibre channel, your only real way of controlling which nodes can access which other nodes is Zones.
    for zones there are a few best practices:
    * Default Zone: Don't use it. unless you're running Ficon.
    * Single Initiator zones: One host, many storage targets. Don't put 2 initiators in one zone or they'll try logging into each other which at best will give you a performance hit, at worst will bring down your systems.
    * Don't mix zoning types:  You can zone on wwn, on port, and Cisco NX-OS will give you a plethora of other options, like on device alias or LUN Zoning. Don't use different types of these in one zone.
    * Device alias zoning is definately recommended with Enhanced Zoning and Enhanced DA enabled, since it will make replacing hba's a heck of a lot less painful in your fabric.
    * LUN zoning is being deprecated, so avoid. You can achieve the same effect on any modern array by doing lun masking.
    * Read-Only exists, but again any modern array should be able to make a lun read-only.
    * QoS on Zoning: Isn't really an ACL method, more of a congestion control.
    VSANs are a way to separate your physical fabric into several logical fabrics.  There's one huge distinction here with VLANs, that is that as a rule of thumb, you should put things that you want to talk to each other in the same VSANs. There's no such concept as a broadcast domain the way it exists in Ethernet in FC, so VSANs don't serve as isolation for that. Routing on Fibre Channel (IVR or Inter-VSAN Routing) is possible, but quickly becomes a pain if you use it a lot/structurally. Keep IVR for exceptions, use VSANs for logical units of hosts and storage that belong to each other.  A good example would be to put each of 2 remote datacenters in their own VSAN, create a third VSAN for the ports on the array that provide replication between DC and use IVR to make management hosts have inband access to all arrays.
    When using IVR, maintain a manual and minimal topology. IVR tends to become very complex very fast and auto topology isn't helping this.
    Traditional IP acls (permit this proto to that dest on such a port and deny other combinations) are very rare on management interfaces, since they're usually connected to already separated segments. Same goes for Fibre Channel over IP links (that connect to ethernet interfaces in your storage switch).
    They are quite logical to use  and work just the same on an MDS as on a traditional Ethernetswitch when you want to use IP over FC (not to be confused with FC over IP). But then you'll logically use your switch as an L2/L3 device.
    I'm personally not an IP guy, but here's a quite good guide to setting up IP services in a FC fabric:
    http://www.cisco.com/en/US/partner/docs/switches/datacenter/mds9000/sw/4_1/configuration/guides/cli_4_1/ipsvc.html
    To protect your san from devices that are 'slow-draining' and can cause congestion, I highly recommend enabling slow-drain policy monitors, as described in this document:
    http://www.cisco.com/en/US/partner/docs/switches/datacenter/mds9000/sw/5_0/configuration/guides/int/nxos/intf.html#wp1743661
    That's a very brief summary of the most important access-control-related Best Practices that come to mind.  If any of this isn't clear to you or you require more detail, let me know. HTH!

  • Unable To See Network Drive from outside Home Network..even when using DynDNS

    Hi
    I have just got a Freecom Media storage Network Center which I have attached to my WRT150N router.
    I am attemting to permit access to authorised users to files on the drive via the internet (presumably via ftp).
    Here is what I have done:
    Swiitched on DynDNS on the web admin page in the router (used DynDNS.com free service.
    Obtained a user addess which is middle-earth.dyndns-home.com from DynDNS, which is linked to my Virgin Media IP
    Switched on Port Range forwarding with
    Ports 20-21 as ftp
    Port 80 as http
    Port 57 as DNS
    Selected "both protocols"
    Set the IP address to route to 192.168.1.42 - (this is the IP address which the web based software for the Network Drive reports as.
    However the configuration of the TCP/IP protocol in PC attached by LAN cable to the router is "Obtain an IP address automatically" (i.e. dynamic?).  If I change these settings and specify static IP addresses   will I not muck up internet connection to Virgin Media.
    what I was hoping to acheive was typing     ftp:// middle-earth.dyndns-home.com
    in the address bar would let me see the network drive from anywhere!
    I have tried using DNS pinging on Ports 20, and 21 but that tells my ports are closed.  i have also tried switching off my software firewall (Kaspersky) and the router firewall, but this does nothing.
    What have I done wrong or no done!!
    Thanks                                                                                              

    I think the problem is solved.
    The Freecom device needs to use a different part of its interface to be assigned a static IP address, which I have now done.  At my last try it was visible from two independent views outside of my network.
    On another front, I am appalled at Linksys or Cisco, who are not prepared to advice on getting more from their produicts if they are 'out of warranty'.  The online chat tech said I could ring an 0871 premium line number in the UK.  When I rang that, I was told as tthat as my unit is not faulty and was out of warranty I would have to use their pay per incident  service.
    That is not a way to deal with customers.  When it comes to upgrading or replacing network equipment, I will look to a provider who is interested in their customers. 

  • Trace a Host in switched network

    Hi
    I have network consisting of l3-3550 and 2950 series switches.
    I have 10 to 12 vlans, all the server and firewall are on default vlan 1 and all desktop in different vlan.
    I have problem on firewall, It syslogs is showing lot of packet coming to it from the lan with PUBLIC IP address seems some inffected desktop.
    I would like to trace this deskstop or server which is sending this packet.
    I have tried using vaious sniffer and ethereal. But all packet except packet going to firewall is visble. I had connected the sniffer in same vlan as the firewall and even tried on same switch
    How do i go about, pls help
    regds
    Ramp

    Ramp,
    You can use 2 methodsto accomplish this.
    You can use a L2 traceroute feature but I am afraid that all you switches doesnot support that.
    Another way is by checking the Host MAC-address in the sniffer tool to see which mac is behaving abnormally. Ping the host and check the MAC-addess table on the switch and see from where the MAC-was learned on the switch. Use CDP to find out the neighbor switch's IP and login into that and keep on checking the mac-address table to locate that. You need to check the MAC-address table of each switch untill you find that MAC.
    HTH,
    -amit singh

  • No external network access from virtual machine

    Hello:
    I'm configuring a Windows Server 2012 Standard with Hyper-V and want to share a network card so that both the virtual machine and the host access a LAN using the same wire.
    HOST SYSTEM:
    OS: Windows Server 2012 Standard
    IP: 192.168.50.1
    VIRTUAL MACHINE: Windows XP
    IP: 192.168.50.4
    PHYSICAL SWITCH (CISCO):
    IP: 192.168.50.6
    I've configured an external virtual switch, assigned to it a physical card and activated the sharing between host and virtual machine.
    With this configuration:
    ping from HOST to VM and viceversa: OK
    ping from HOST to REAL SWITCH: OK
    ping from VM to REAL SWITCH: FAIL
    If I configure the network card to work exclusively with the VM, it can access the external switch from the VM, but I lose any connection with the host.
    I could solve the problem installing another physical card and using one for the host and one for the VM, but I can't get both working with the same card, even though they are in the same subnet, see each other, share files between VM and host... I'm not
    trying to connect to the internet.
    Any idea? Thanks.

    Hello again,
    Sorry for the delay.
    After system update, the problem has not been solved. The external switches do not limit the number of MACs, so this is not the problem either.
    After updating the system I deleted the virtual switch and created it again. I also rebooted the VM and even the server. It just doesn't share the access: only the VM or the server can access to the net at the same time, even if both see each other all the
    time (server and VM).
    Apart from that, every time I delete the virtual switch and create a new one, I reconfigure the VM as well (I delete the network card at the VM and create it again). When I do that I have to assign an IP address to the network card in the VM (no DHCP
    installed, so this is normal), but I can use the same IP I was using before deleting the virtual switch. When I do so, a message appears saying the IP is used in a virtual network adapter, but this is hidden because it is not in use anymore. I haven't found
    a way to see and delete these hidden network adapters either.
    I think I'll install VMWare, because Hyper-V is more a problem than a solution.

  • Toshiba tecra a11-17c refusing to boot from LAN

    Hello
    I am working on a Toshiba tecra a11-17c. We currently have about 18 of the same laptop and the person who originally built the computers has left the office we are currently working at.
    The issue I am have is that I  want to boot the computer from lan and do a windows 7 installation on the laptop but I keep getting the error "Media test failure, check cable"
    I know the cable is working because I was able to build a Toshiba satellite pro l20 perfectly fine
    The other Toshiba tecra a11-17c laptops have the same issue when trying to rebuild them too
    I am fully able to log into a Toshiba tecra a11-17c and connect to the internet via the same network cable and port when in windows.
    I have also tried to swap the hard drive with a different tecra a11-17c but it just kept getting a blue screen as soon as the windows flag appeared.
    I then tried a format of the hard drive and a reset to default of the bios settings as suggested in a different forum.
    I then tried to clone a fully working hard drive from a different fully working tecra a11-17c and it just dose the blue screen as stated above.
    I then used an old windows XP recovery disk for the tecra a11-17c it did the build fine no issues then when it came to build to windows but as stated above it just dose a blue screen the same as windows 7.
    Now I have no idea what to do but to believe it is something Toshiba has done with the tecra a11-17c range because its the same issue for all 18 of the tecra a11-17c laptops I have here.
    Any way I am at a loss and have no idea what to do it seems to be something as simple as the network card need to be turned on during the boot phase but I can not find anything in the bios.

    I'm sorry but I have no experience doing what your attempting to do.  However, for your information, this site is for U.S. models only and I would suggest you also post in the appropriate regional Toshiba Support forum to get better suggestions.  Good luck
    L305-S5955, T9300 Intel Core 2 Duo, 4GB RAM, 60GB SSD, Win 7 Ultimate 64-bit

  • Stop switching networks

    How do I get my Linksys WRT54G2 router from automatically switching networks? When it does this I get limited or no connectivity to the internet on my pc.

    Adjust the Wireless Settings on your Linksys Router...
    Open an Internet Explorer browser page on your wired computer(desktop).In the address bar type - 192.168.1.1 and press Enter...
    Leave username blank & in password use admin in lower case...
    For Wireless Settings, please do the following : -
    Click on the Wireless tab
    -Here select manual configuration...Wireless Network mode should be mixed...
    -Provide a unique name in the Wireless Network Name (SSID) box in order to differentiate your network from your neighbours network...
    - Set the Wireless channel to 11-2.462GHz...Wireless SSID broadcast should be Enabled and then click on Save Settings...
    Please make a note of Wireless Network Name (SSID) as this is the Network Identifier...
    For Wireless Security : -
    Click on the Sub tab under Wireless > Wireless Security...
    Change the Wireless security mode to WEP, Encryption should be 64 bits.Leave the passphrase blank, don't type in anything...
    Under WEP Key 1 type in any 10 numbers please(numbers only and no letters eg: your 10 digit phone number) and click on save settings...
    Please make a note of WEP Key 1 as this is the Security Key for the Wireless Network...
    Click on Advanced Wireless Settings
    Change the Beacon Interval to 75 >>Change the Fragmentation Threshold to 2304, Change the RTS Threshold to 2304 >>Click on "Save Settings"...
    Now see if you can locate your Wireless Network and attempt to connect...
    If it still keeps on switching networks disable the wireless network connection and restart the computer...Click on Start and goto the Control Panel and double click on Network Connections, right click on Wireless Network Connection and click on Enable and then goto Properties.
    Now on this window, click on the second tab Wireless Network and give a check mark on "Use windows to configure my wireless" and then remove all the network names present in the Preferred Networks Window. Then click on OK...
    Right click on the Wireless Network Connection again and click on View Available Wireless Networks and try to re-connect to your network...
    Now it will give you the opportunity to put the network/wep key, make sure you enter the correct network key and confirm it...
    It will connect...
    If all the above fails then download and install the updated drivers for your Wireless Card...

  • Photoshop CS5 - win 7 - 8.1 64 bit - Lag to open files from lan

    Hello,
    we have got a problem with photoshop. If we open a file from lan, photoshop wait some seconds before open it, even with very little pics. It has a lag of some seconds before start to open it. With local files is the same.
    If I erase the recent files list and then I try to open a local file, it opens immediately. If I open a lan file and then I open a local file, the problem returns.
    It looks like a recent file list problem. I tried to set it to 0 but nothing changes, because it save the recent list anyway but simply it doesn't show it.
    I tried to disable the suitcase extensis plug-in (the only plug-in we have added), I tried to disable kaspersky antivirus, but nothing.
    We have this problem with all 3 workstations, 2 with win 7 64bit and one with win 8.1 64 bit. With the older station the lag is bigger (5-10 seconds for every image). With the newest station 1 sec.
    Is there any solution?
    Is there anything to do for stop the recent file list to work?
    Thanks a lot
    Nicola

    Are they on the same router are there different OS,  adapter speeds file system involved.  On my home network where my windows machine are connected to the same router with 1GHz ethernet a 20MB CR2 file takes only a second or two open in ACR.

Maybe you are looking for