01-20-2019 10:56 PM - edited 03-08-2019 05:05 PM
Hello everybody
We have a couple of 3850 (Stacked) and we use it in our aggregation layer.
ports on this switches are bundled in port-channels to downstream switches
More than half of port are free(not connected for future).
As you know, 3850 series are really powerful and meanwhile when you stack them, their capabilities will increase.
but here are an output of one of port-channel interfaces which looks really strange:
https://pitstop.manageengine.com/portal/community/topic/report-and-print-problems
Hardware is EtherChannel, address is ---------- (bia -------------)
MTU 1500 bytes, BW 2000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is auto, media type is
input flow-control is off, output flow-control is unsupported
Members in this channel: Gi1/0/24 Gi2/0/24
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:13:28, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 562303015
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 153000 bits/sec, 134 packets/sec
5 minute output rate 2330000 bits/sec, 325 packets/sec
127201005 packets input, 44246365237 bytes, 0 no buffer
Received 1266947 broadcasts (903818 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 903818 multicast, 0 pause input
0 input packets with dribble condition detected
380610888 packets output, 410883103982 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
Its IOS EX is almost updated (3.6). no buffer failures, no error or ,,,, but Output drop. this interfaces are 1G but their utilization is at most 30% ant lower. some of them utilize even under 10% . Switches are stacked and most of their interfaces are not connected so there isn't any limitation in buffer or ...
01-27-2019 02:13 AM
Dear @romanroma
My Fiber links connected to 3850 uplink module are working fine without any output drop. They're working at 10G speed.
Have you changed the transceivers?
04-21-2019 10:47 PM
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