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February 6th, 2025 15:01

General Guidelines for Acceptable Discard Rates on Port-Cannel trunk interfaces between two Dell s4048ON

I have a discarded packet rate of .018% on a Port-Cannel to and from Dell s4048ON.  Is that normal?  Please provide a good source.  I used ChatGPT and it said its normal but id like a legitimate white paper or dell document that can confirm.

I looked at all the transceivers and they all have the same input discarded rate. (Was trying to narrow out one interface in the Port-Channel)

Check out my configs  


Dell_4048_SW-1#sho int po100
Port-channel 100 is up, line protocol is up
Created by LACP protocol
Description: Dell_4048_SW-2-80-Gi_Aggregate
Hardware address is e4:f0:04:59:eb:c3, Current address is e4:f0:04:59:eb:c3
Interface index is 1258291712
Minimum number of links to bring Port-channel up is 100
Internet address is not set
Mode of IPv4 Address Assignment : NONE
DHCP Client-ID :e4f00459ebc3
MTU 9216 bytes, IP MTU 9198 bytes
LineSpeed 80000 Mbit
Members in this channel:  Te 1/10(U) Te 1/11(U) Te 1/12(U) Te 1/13(U) Te 2/10(U) Te 2/11(U) Te 2/12(U) Te 2/13(U)
ARP type: ARPA, ARP Timeout 04:00:00
Queueing strategy: fifo
Input Statistics:
     340501302 packets, 210109393087 bytes
     16054 64-byte pkts, 67503824 over 64-byte pkts, 144290919 over 127-byte pkts
     9654111 over 255-byte pkts, 14242692 over 511-byte pkts, 104793702 over 1023-byte pkts
     106115 Multicasts, 44095 Broadcasts, 340351092 Unicasts
     0 runts, 0 giants, 0 throttles
     0 CRC, 0 overrun, 59748 discarded
Output Statistics:
     258062256 packets, 75323745859 bytes, 0 underruns
     7218210 64-byte pkts, 66825437 over 64-byte pkts, 146052127 over 127-byte pkts
     6393463 over 255-byte pkts, 15559129 over 511-byte pkts, 16013890 over 1023-byte pkts
     1062890 Multicasts, 372093 Broadcasts, 256627273 Unicasts
     0 throttles, 0 discarded, 0 collisions, 0 wreddrops
Rate info (interval 299 seconds):
     Input 349.00 Mbits/sec,     103614 packets/sec, 0.46% of line-rate
     Output 195.00 Mbits/sec,      91848 packets/sec, 0.26% of line-rate
Time since last interface status change: 92w2d14h

------------------------------

Dell_4048_SW-1


interface Port-channel 100
 description Dell_4048_SW-2-80-Gi_Aggregate
 no ip address
 mtu 9216
 switchport
 no shutdown

interface TenGigabitEthernet 1/10
 description Dell_4048_SW-2_1/10
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown
!
interface TenGigabitEthernet 1/11
 description Dell_4048_SW-2_Te1/11
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown
!
interface TenGigabitEthernet 1/12
 description Dell_4048_SW-2_Te1/112
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown
!
interface TenGigabitEthernet 1/13
 description Dell_4048_SW-2_Te1/13
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown
!
interface TenGigabitEthernet 2/10
 description Dell_4048_SW-2-Te2/10
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown
!
interface TenGigabitEthernet 2/11
 description Dell_4048_SW-2-Te2/11
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown
!
interface TenGigabitEthernet 2/12
 description Dell_4048_SW-2-Te2/12
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown
!
interface TenGigabitEthernet 2/13
 description Dell_4048_SW-2-Te2/13
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown

------------------------------

Dell_4048_SW-2


Dell_4048_SW-2#sho int po100
Port-channel 1 is up, line protocol is up
Created by LACP protocol
Description: To_Dell_4048_SW-1
Hardware address is 64:00:6a:f5:62:82, Current address is 64:00:6a:f5:62:82
Interface index is 1258291712
Minimum number of links to bring Port-channel up is 100
Internet address is not set
Mode of IPv4 Address Assignment : NONE
DHCP Client-ID :64006af56282
MTU 9216 bytes, IP MTU 9198 bytes
LineSpeed 80000 Mbit
Members in this channel:  Te 1/10(U) Te 1/11(U) Te 1/12(U) Te 1/13(U) Te 2/10(U) Te 2/11(U) Te 2/12(U) Te 2/13(U
ARP type: ARPA, ARP Timeout 04:00:00
Queueing strategy: fifo
Input Statistics:
     366961480 packets, 105252650769 bytes
     9023039 64-byte pkts, 80722480 over 64-byte pkts, 229657890 over 127-byte pkts
     7784582 over 255-byte pkts, 19039144 over 511-byte pkts, 20734345 over 1023-byte pkts
     1204987 Multicasts, 429082 Broadcasts, 365327410 Unicasts
     0 runts, 0 giants, 0 throttles
     0 CRC, 0 overrun, 64184 discarded
Output Statistics:
     458971749 packets, 256144809207 bytes, 0 underruns
     18214 64-byte pkts, 81877881 over 64-byte pkts, 227887950 over 127-byte pkts
     11540365 over 255-byte pkts, 17500115 over 511-byte pkts, 120147224 over 1023-byte pkts
     120365 Multicasts, 49881 Broadcasts, 458801503 Unicasts
     0 throttles, 0 discarded, 0 collisions, 0 wreddrops
Rate info (interval 299 seconds):
     Input 244.00 Mbits/sec,     105628 packets/sec, 0.33% of line-rate
     Output 370.00 Mbits/sec,     115082 packets/sec, 0.49% of line-rate
Time since last interface status change: 92w2d14h


interface Port-channel 1
 description To_Dell_4048_SW-1
 no ip address
 mtu 9216
 switchport
 no shutdown


interface TenGigabitEthernet 1/10
 description Dell_4048_SW-1_1/10
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown
!
interface TenGigabitEthernet 1/11
 description Dell_4048_SW-1_Te1/11
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown
!
interface TenGigabitEthernet 1/12
 description Dell_4048_SW-1_Te1/112
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown
!
interface TenGigabitEthernet 1/13
 description Dell_4048_SW-1_Te1/13
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown
!
interface TenGigabitEthernet 2/10
 description Dell_4048_SW-1-Te2/10
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown
!
interface TenGigabitEthernet 2/11
 description Dell_4048_SW-1-Te2/11
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown
!
interface TenGigabitEthernet 2/12
 description Dell_4048_SW-1-Te2/12
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown
!
interface TenGigabitEthernet 2/13
 description Dell_4048_SW-1-Te2/13
 no ip address
 mtu 9216
!
 port-channel-protocol LACP
  port-channel 100 mode active
 no shutdown

Moderator

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5.1K Posts

February 27th, 2025 05:00

Hello @Wan_Whisperer

Thanks for choosing Dell and welcome to our community.

First of all could you check this out? https://www.dell.com/community/en/direct-messaging

 

Also make sure your firmware is 9.14.2.23.

 

https://www.dell.com/support/manuals/en-tt/dell-emc-os-9/s4048-on-9.14.2.5-cli-pub/show-interfaces?guid=guid-fa209ab8-de11-451a-8d64-74aa8fdf62d7&lang=en-us

 

  • “discarded = the sum of runts, giants, CRC, and overrun packets discarded without any processing

I’m thinking this it might be the reason why.  There is no CRC errors (physical cable or SFP ) either.

 

Let us know if you have any additional questions.

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