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seen Nov 18 at 9:44

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comment Linux bonding: 802.3ad (LACP) vs. balance-alb mode
Unfortunately it seems like on Juniper switches automatic LACP is not supported: juniper.net/techpubs/en_US/junos10.0/information-products/…: "The JUNOS implementation of LACP provides link monitoring but not automatic addition and deletion of links.".
Apr
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comment Linux bonding: 802.3ad (LACP) vs. balance-alb mode
already tried that. the force-up option kills redundancy - it makes the switch always send traffic to the forced interface, even if it is physically down.
Apr
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comment Linux bonding: 802.3ad (LACP) vs. balance-alb mode
If the switch side is configured to use LACP then PXE doesn't work. The LACP configuration for the port must be removed first.
Apr
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asked Linux bonding: 802.3ad (LACP) vs. balance-alb mode
Apr
1
comment Using Y split cables to connect two servers to a single PDU receptacle
Power density is a limiting factor. We're not able to nearly fill our 48U rack with those machines although we get 60amp/208v of redundant power to each rack. However, we still are able to utilize more than we can get from the 18 receptacles that the 2 x horizontal PDUs can give us. Therefore I wanted to use the Y cables to connect some of the less power intensive equipment that's installed on the rack (i.e. the access switches and some standard 1U servers) to get a few extra receptacles.
Apr
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comment Using Y split cables to connect two servers to a single PDU receptacle
Here's why wer'e using horizontal PDU on these racks instead of the 0RU ones we use everywhere else. Those racks have SuperMicro "twin servers" installed in them, these are 2U enclosures with 4 servers in each that you can hot-swap from the back of the rack. The problem is that the 0RU PDUs get in the way of these hot-swappable servers and we have to take out the whole enclosure to replace a single server. Therefore we had no choice but switching to horizontal PDUs.
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answered CDN for caching REST api