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O/S Deployment Thread, Fog Multicast in Technical; Hi, I have installed a FOG server on Ubuntu. WOrks really well on unicast, takes about 15mins to image a ...
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    rocknrollstar's Avatar
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    Fog Multicast

    Hi, I have installed a FOG server on Ubuntu. WOrks really well on unicast, takes about 15mins to image a machine. However, when I try unicast, it does work, but the send speed drops to about 5mbps, and reckons it will take 36hours!

    I thought multicast was supposed to be just as fast as unicast? Multicast is working, just extremely slowly. It looks like queueing the imaging with 1 or 2 at a time will be faster!

    Machine specs aren't great, 2.8Ghz with 512mb ram. 100mbps network.

    Any thoughts? Thanks in advance.

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    I've not used FOG so I'm not sure how well it does multicast. The wiki says "Multicasting in FOG may require special switch configuration." which is a wonderful get out clause :-)

    typically, you need to look at IGMP snooping on your switches - it should be enabled to allow multicast to work well.

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    rocknrollstar (25th May 2009)

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    rocknrollstar's Avatar
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    Thanks srochford. Gotta admit, routers and switches scare me, not really sure what to do with them. No worries, I'll just use fog to do a unicast, but queue them up a few at a time. Won't be as fast as multicast working properly, but probably faster than multicast not working....

    Thanks for your help anyway.

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