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October 30th, 2023 01:21

N3248X-ON Firmware version 6.8.1.2 Interface Discards

Hi,

We are seeing interface discards and a slowly increasing Alloc failures below. The discards seem to be affecting the data transfer of Avid Nexis clients to the Avid Nexis storage. Whenever a write error occurs on the Avid Nexis clients while copying, there was a small spike in discards. Any help/suggestions would be appreciated.

# interface config

ip dhcp snooping log-invalid
switchport access vlan 54

# show interface

Interface name................................. Te4/0/7
SOC hardware info.............................. BCM56771_A0
Link status.................................... Up     /None
Keepalive enabled.............................. FALSE
Err-disable cause.............................. none
VLAN membership mode........................... Access Mode
VLAN membership................................ 54
MTU size....................................... 9216
Port mode [duplex]............................. Full
Port speed..................................... 100
Link debounce flaps............................ 0
Auto-negotation status......................... Auto
Burned in MAC address.......................... E8B2.6573.447C
L3 MAC address................................. E8B2.6573.447F
Sample load interval........................... 300
Receive rate bits/sec.......................... 5472
Receive rate packets/sec....................... 9
Receive percent utilization.................... 0%
Transmit rate bits/sec......................... 20144
Transmit rate packets/sec : ................... 22
Transmit percent utilization................... 0%
Total frames received without errors........... 14090747
Unicast frames received........................ 14042355
Multicast frames received...................... 48270
Broadcast frames received...................... 122
Total frames received with MAC errors.......... 0
Jabbers received............................... 0
Fragments/Undersize received................... 0
Alignment errors received...................... 0
FCS errors received............................ 0
Overruns received.............................. 0
Total received frames not forwarded............ 185977
Total frames transmitted successfully.......... 29271845
Unicast frames transmitted..................... 14062169
Multicast frames transmitted................... 3918761
Broadcast frames transmitted................... 11290915
Transmit frames discarded...................... 252
Total transmit errors.......................... 0
FCS errors transmitted......................... 0
Total transmit frames discarded................ 252
Single collision frames........................ 0
Multiple collision frames...................... 0
Excessive collision frames..................... 0
Time since counters last cleared............... 16 day 18 hr 11 min 43 sec

# show buffers total

Mbufs Total.................................... 500
Mbufs Free..................................... 499
Mbufs Rx Used.................................. 0
Mbufs Rx Norm Used............................. 0
Mbufs Rx Mid2 Used............................. 0
Mbufs Rx Mid1 Used............................. 0
Mbufs Rx Mid0 Used............................. 0
Mbufs Rx High Used............................. 0
Mbufs Tx Used.................................. 1
Total Rx Norm Alloc Attempts................... 332885976
Total Rx Mid2 Alloc Attempts................... 309084533
Total Rx Mid1 Alloc Attempts................... 8457822
Total Rx Mid0 Alloc Attempts................... 0
Total Rx High Alloc Attempts................... 6806319
Total Tx Alloc Attempts........................ 433073154
Total Rx Norm Alloc Failures................... 94192
Total Rx Mid2 Alloc Failures................... 80997
Total Rx Mid1 Alloc Failures................... 1272531
Total Rx Mid0 Alloc Failures................... 0
Total Rx High Alloc Failures................... 0
Total Tx Alloc Failures........................ 0

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3K Posts

October 30th, 2023 08:32

Hi,

 

On the interface configuration can you add and check if it helped the situation.

 

#spanning-tree portfast

#storm-control broadcast

 

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