Need help configuring Netgear GS748T for Ghost PXE Multicast

Posted on 2009-07-09
Last Modified: 2013-12-02
I have an isolated network for Ghost PXE Mulitcasting.  I have just been given a Netgear GS748T and would like to configure it to maximize the mulitcasting.  Im not sure on how to configure this to help with the ghost muilticasting.  I have a wide range of client systems, from 10/100 to 10/100/1000 nics.  I also image Macs on this network.  The also use thier own netboot server.  Currently we are using Netrestore.  I need the max bandwith for the fastes deployment.  Does jumbo frames mean anything?  Any info would be greatly appreciated.
Question by:kabrutus
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LVL 11

Expert Comment

ID: 24825472
Jumbo Frames has nothing to do with this as far as I know, but make sure the IGMP support is on.
So currently you have everything setup but you are experiencing slow transfer rates or you need help seting up the Ghost PXE booting? I wasn't too clear on what you needed help on

Author Comment

ID: 24825536
I have the PXE Ghost set up already.  I currently have a dumb switch and just purchased the GS748T.  I would like to get the max throughput from that.  I hear of other companies imaging computers faster than us and i am thinking it is because of the switch.  
LVL 11

Accepted Solution

emilgas earned 500 total points
ID: 24825670
In that case give me the actual transfer speed.
I do exactly what you do and I use PXE booting too.
My transfer speeds vary from 500-900MB/Min Depending on the number of PC that are being imaged at the same time and if they are on Gigabit lan.
I have Linksys unmanaged Gigabit switch and my server is an HP Proliant Server also with a Gigabit NIC. Laptops that I image vary in speeds. Obviously faster laptops with gigabit NIC reach that 900Mb/Min transfer rate.
Slower laptops with 10/100 speed are around 500. Here is an example I had 18 old laptops all with 10/100NIC average about 600MB/min
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Author Comment

ID: 24825840
That looks like what i get currently without the new switch.  but some machines do image slower for some reason... i have imaged some Intel servers with gigabit and they image at about 250MB/Min.   Is this the fastest its going to get?  sometimes if i create the RIS ghost bootdisk and use the nic driver from the manufacture, i get better speed than the default PXE driver.
LVL 11

Expert Comment

ID: 24826320
Don't forget that PXE is always slower because of some overhead that it has plus it does not use the actual drivers that were designed for the NIC. When I boot my laptops from CD that has the NIC drivers from the NIC Vendor they tend to work a bit faster, but I like PXE for the convenience of it. no swapping Boot CDs and no hassle. Just press F12.
But 250mb/min sound a bit too slow

Author Comment

ID: 24826456
i have a lot of different systems with different nic cards.  I guess i will just create a different RIS boot menu for each of them.  Is this the best and fastest way to image?
LVL 11

Expert Comment

ID: 24826752
Humm... Read this and let me know what you think.
I don't think RIS Boot disk is much different. I never used RIS before, so I can't be too much of a help

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