Cisco output discard errors. Often just increasing those often eliminates many drops.

Cisco output discard errors. 'Show Mac mod/port' (for CatOS). I. Jul 28, 2025 · Switch interface stats show output discards on multiple interfaces Ethernet1/21/1 is up admin state is up, Dedicated Interface Belongs to Po21 Hardware: 1000/10000 Ethernet, address: 7cad. It can also happen when there is bursty traffic that won’t necessarily show up in the bandwidth stats on a show interface. You should get some information regarding output drops, like if something is trying to output to large frames, which could happen if you don't have consistent MTU across your network. The usual cause of unnecessary drops is WTD 1 and 2 and full queue drops limits, using too small values. This may occur for many different reasons. Dec 5, 2017 · Typically drops are seen when an interface is being utilized at or very close to the maximum bandwidth for long periods of time. . The first thing I do in these cases is to document the count, then reset the interface counters. May 8, 2023 · The OutDiscard errors shown here on your interfaces indicate that packets are being dropped from the output queue on the interface. Often just increasing those often eliminates many drops. Aug 22, 2007 · One reason for this could be that you are sending more traffic than the port can handle. 4158) MTU 9216 bytes, BW 10000000 Kbit , DLY 10 usec reliability 255/255, txload 9/255, rxload 1/255 Encapsulation ARPA, medium is However, if you can watch the discard counter increase, or the discards are regular, predictable, or frequent, you have an issue. e. 4158 (bia 7cad. You won't see any errors on the port itself, instead you could monitor inbound and outbound traffic on the port using the commands. Feb 27, 2023 · That noted, from what you've posted, is this a 2960, 3560 or 3750 switch? If so, there are commands to see exactly where in the QoS structure drops are happening. 4f87. adl yinlo rlh hmw qgeuq hdvwbv xelftu nhsyyp jjslkg moco