----------------eredeti üzenet----------------- Feladó: "Hilko Bengen" bengen@xxxxxxxxxxxxxxxx Címzett: "PongráczI" CC: aoetools-discuss@xxxxxxxxxxxxxxxxxxxxx Dátum: Mon, 08 Apr 2013 11:32:19 +0200 ------------------------------------------------- > * PongráczI: > >> So, as I checked the Layer2, it has error checking as you wrote. So, >> as I understand now, data corruption cannot happen on layer2, because >> this basic CRC protection handle layer 1 issues which can happen in >> the physical layer. > > This is only true if your Ethernet switch does not rewrite the frames as > it forwards them. > > For example, you may want to use VLANs in order to separate initiators > that are connected to the one machine that exports multiple targets. > Using 802.1q-tagged VLANs on the target side and untagged VLANs for the > initiator is a good idea for doing this. However, the switch will have > to add/remove tags and recalculate the checksums. In such a case, the > checksum will not protect you against data corruption that may occur > within the switch. > > Cheers, > -Hilko > Hi Hilko, Thank you very much for your comment, I completly missed this use case. So, for using AoE it is better to use direct connect or using reliable switches, better without VLAN tags? Cheers, István ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis & visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter _______________________________________________ Aoetools-discuss mailing list Aoetools-discuss@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/aoetools-discuss
