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    SNBForums is a community for everyone, no matter what their level of experience.

    Please be tolerant and patient of others, especially newcomers. We are all here to share and learn!

    The rules are simple: Be patient, be nice, be helpful or be gone!

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    Has Networking Lost Its Mojo?

    Just need some imagination :-) Yes, basic SOHO net stuff is becoming mainstream - most stuff just works and most SOHO users can fumble their way without being uber geeks anymore. This is true of SOHO and PC tech in general - check out other sites like Toms Hardware or Anandtech - they used...
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    Router Multicast Inefficiency

    LAN->WAN would be a good test - especially if you fire up a few different publishers on the LAN. You'll probably find that the router has difficulty streaming hit bit rate videos to the WAN. LAN->LAN with a WWAN router attached would be a good test as well - will let you know if your WWAN...
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    Linksys SRW2008

    Fixed! Looks like I've fixed it (kinda sorta) for me at least. I found a perl script that forges iGMP query packets to make it look like there is an iGMP querier on the network: http://code.google.com/p/perl-igmp-querier/ When running the script (on Linux as root on a server attached to the...
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    Router Multicast Inefficiency

    A very simple but perhaps meaningful test would be to try multicasting some video with VideoLan . File -> Wizard -> Stream to Network... -> Next ... choose a video file Then run another couple of Videolans elsewhere to display the multicast stream. If you see pictures then just run a tcpdump...
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    Router Multicast Inefficiency

    I'm utilizing synthetic raw market data feeds. These are usually a group of multicast streams (typically 9-24) of pricing information from stock exchanges like the NYSE/NASDAQ and other Automated Trading Centers (ATCs). With a iGMP snooping switch (with a big enough multicast table) you can...
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    Router Multicast Inefficiency

    Seems like a 200-300 multicast packet/sec on the LAN will cause serious lockups on budget routers. Ive tried both a TRENDNet TEW-633GR and a Linksys WRT54G v4 flashed with DD-WRT. Enabling/disabling multicast in the config makes no difference. I don't actually want LAN->WAN or LAN->wireless...
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    8 port, small, managed switch suggestions

    I didn't notice the managed switch requirement. What managed features are you looking for?
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    8 port, small, managed switch suggestions

    Bytecc BT-555 or D-Link DGS-2208 Update: Ooops - didnt notice the managed switch requirement. The ones I mentioned below are unmanaged... If 5 ports is enough then the Bytecc BT-555 5-Port 10/100 Ethernet Switch is tiny and is USB powered so there is no power pack required. I use mine all...
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    Speeding up Gigabit Ethernet

    Dont forget BDP If the data is being transferred over TCP/IP then speeds can be compromised by Bandwidth Delay Product especially if tiny RWIN is used. Some OS have receive windows as small as 8Kb which would reduce throughput below 1Gbit if latency exceeded ~70usecs.
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    D-Link DGS-2208

    The D-Link DGS-2208 is an excellent unmanaged 8-port switch. I did some quick Linux->Linux latency benchmarks using a high frequency (10k/sec) ping at different packet sizes and compared with a simple crossover cable - the different shows the latency due to the switch. See attachment...
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    Linksys SRW2008

    I did a fair amount of research (including reading SmallNetBuilder.com) when I was looking for a capable 8-port switch. In the end I settled on the SRW2008 because of its claimed support for iGMP snooping and 256 multicast groups as I have custom multicast requirements. Let me be very clear...
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