01-09-2020 01:14 PM
Hi Team,
I am observing input discard,CRC,and input errors on my nexus(Nexus 5696 ) interface.
sh int et2/5
MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec
reliability 255/255, txload 5/255, rxload 1/255
0 runts 0 giants 15098 CRC 0 no buffer
15098 input error 0 short frame 0 overrun 0 underrun 0 ignored
0 watchdog 0 bad etype drop 0 bad proto drop 0 if down drop
0 input with dribble 14335 input discard
0 Rx pause
The other end of the device is connected to 4500x chassi where not observing any interface errors.
I had changed Transceiver and Cable but still observing errors.
Can any one help to resolve the issue.
01-09-2020 01:19 PM
Hi,
Do you see the same issue if you connect the cable to a different port e.g e2/6?
HTH
01-09-2020 01:23 PM
Not observing .
But observed Rx stomped packet count is incrementing.
RX_PKT_CRC_NOT_STOMPED | 12888244 | 12888238 | 3
RX_PKT_CRC_STOMPED | 0 | 0 | 0
01-09-2020 01:27 PM
Can you provide the config for the port with issue?
sh run int tex/x
sh int tex/x
Is jumbo frame enabled on the switch?
HTH
01-09-2020 01:39 PM - edited 01-22-2020 05:08 AM
07-23-2020 11:27 AM
I am seeing a similar issue on my 5672UP. The input discard is happening on e1/7 for me. I found this article which provided some insight.
Running the command "sh hard internal bigsur all-ports" shows that e1/7 is associated with ASIC 1.
Running the command "sh plat soft qd info counters voq asic-num 1" displays
+----------+------------------------------+------------------------+-----------+
| port| TRANSMIT| TAIL DROP| HEAD DROP|
+----------+------------------------------+------------------------+-----------+
SUP_HI
QUEUE-0 169753328 31028747 0
SUP_LO
QUEUE-0 17 0 0
+----------+------------------------------+------------------------+-----------+
My question is: What is SUP_HI?
07-23-2020 01:59 PM - edited 07-23-2020 02:03 PM
I still do not know what SUP_HI is but I managed to fix my Input Discard issue. I had my gateway configured using
vrf context management
ip route 0.0.0.0/0 <gateway>
I replaced this with routes to specific subnets
vrf context management
ip route <subnet1> <gateway>
ip route <subnet2> <gateway>
07-24-2020 06:19 AM
SUP_HI and SUP_LO are the two interfaces connecting the Nexus 5k/6k CPU to the UPC (you can see them on the down-right UPC)
Stay safe,
Sergiu
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: