Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi, On Thu, 26 Sep 2013 08:33:02 +0000 Andreas Mock <andreas.mock at drumedar.de> wrote: > I couldn't find a definitiv answer for my question: > Which ethernet bonding modes are supported for the > DRBD interconnect? > I found the following in > http://www.drbd.org/users-guide-8.4/s-prepare-network.html > "[...] and the bonding driver (in active-backup mode) is recommended > [...]" > Does this mean: When you use the recommended bonding than you > HAVE to use active-passive? I did some experiments with bonding two 1G links. As expected active-passive gives you fallback even when the two links go from machine to two (interconnected) switches. With that you can wire both nodes to both switches, interconnect the switches and get a setup the works even if one switch or one cable stops working. balance-rr only works on directly connected machine, switches get confused about the mac-addresses hopping between ports. And then your switches are so busy updating their arp-tables that they can't route the data anymore. When you really want to use two links from machine to switch to machine, you have to use LACP so each component knows what to do. In the end I stopped my experiments and choose active-passive bonding across two switches for the main interface and balance-rr for the direct 2x10G-link. Now its up to the various drbd-resources (~20 on last count) to max out 20G bandwidth. Hope that helps. Have fun, Arnold -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 198 bytes Desc: not available URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20130928/581f4887/attachment.pgp>