After migrating from a Aruba CX6000 to the S8-POE my alarm system keeps loosing connectivity.
It connects on 100MB, which is fine, but drops every once in a while.
Is there a way to troubleshoot this to see why this is happening?
Have you noticed if any other devices on the switch are dropping off?
If you haven’t already, it would be good to try reseating the cable on another port.
If you are still seeing drops, please reach out to support@alta.inc, and we can take a closer look.
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So far it’s the only device dropping off, port 6 on the S8.
Did swap ports briefly, will swap ports a little longer to see if that makes a difference. Thanx!
EDIT: swapped ports 6 & 7. Not referring to the meme. 
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What firmware were you running when this issue started happening?
When on 2.3p
Well, I think something is up with that firmware version, as I experienced a similar issue where port 8 would flap down to 100 Mbps. Changing the cables made no difference, and I had to contact support for an RMA. However, I am awaiting the next firmware update.
Port 7 seems to be the better port for the alarm system, I can’t tell if port 6 is still having the same issue as the device behind it, might be, less problematic with briefly loosing connectivity.
Will continue to keep an eye on it.
Is there a way to get port statistics on these things?
If you shift-click on the name of the device in the Network tab, or ssh in to it, you can run this command:
diag "mib dump counter port 8"
There is an 8-port offset in the hardware, and it is 0-based, so as an example, if you want to see the stats for port 1, the above command is what you want. For port 8, it would be port 15
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That hurts my brain!
Looking good as far as I can tell.
~ # diag “mib dump counter port 15”
Port 15 Counter
dot1dTpPortInDiscards : 2792
ifInOctets : 3053902967
ifHCInOctets : 166262660215
ifInUcastPkts : 134480827
ifInMulticastPkts : 2676641
ifInBroadcastPkts : 7237
ifOutOctets : 770211045
ifHCOutOctets : 22245047525
ifOutUcastPkts : 39778738
ifOutMulticastPkts : 2471247
ifOutBrocastPkts : 152152
ifOutDiscards : 0
dot3StatsSingleCollisionFrames : 0
dot3StatsMultipleCollisionFrames : 0
dot3StatsDeferredTransmissions : 0
dot3StatsLateCollisions : 0
dot3StatsExcessiveCollisions : 0
dot3StatsSymbolErrors : 0
dot3ControlInUnknownOpcodes : 0
dot3InPauseFrames : 0
dot3OutPauseFrames : 0
etherStatsDropEvents : 0
etherStatsBroadcastPkts : 159389
TX_etherStatsBroadcastPkts : 152152
etherStatsMulticastPkts : 5147888
TX_etherStatsMulticastPkts : 2471247
etherStatsCRCAlignErrors : 0
etherStatsUndersizePkts : 0
RX_etherStatsUndersizePkts : 0
RX_etherStatsUndersizeDropPkts : 0
TX_etherStatsUndersizePkts : 0
etherStatsOversizePkts : 2070
RX_etherStatsOversizePkts : 1983
TX_etherStatsOversizePkts : 87
etherStatsFragments : 0
etherStatsJabbers : 0
etherStatsCollisions : 0
etherStatsPkts64Octets : 2444600
RX_etherStatsPkts64Octets : 1024099
TX_etherStatsPkts64Octets : 1420501
etherStatsPkts65to127Octets : 29839126
RX_etherStatsPkts65to127Octets : 11018059
TX_etherStatsPkts65to127Octets : 18821067
etherStatsPkts128to255Octets : 9946057
RX_etherStatsPkts128to255Octets : 4665891
TX_etherStatsPkts128to255Octets : 5280166
etherStatsPkts256to511Octets : 5631581
RX_etherStatsPkts256to511Octets : 3515277
TX_etherStatsPkts256to511Octets : 2116304
etherStatsPkts512to1023Octets : 5405574
RX_etherStatsPkts512to1023Octets : 3503255
TX_etherStatsPkts512to1023Octets : 1902319
etherStatsPkts1024to1518Octets : 126297834
RX_etherStatsPkts1024to1518Octets : 113436141
TX_etherStatsPkts1024to1518Octets : 12861693
RX_etherStatsPkts1519toMaxOctets : 1983
TX_etherStatsPkts1519toMaxOctets : 87
RX_MacDiscards : 0