P4080 DTSEC FIFO Issue

sharper — Tue, 22 Mar 2016 23:23:32 GMT

After a couple of hours running SNMP traffic, the DTSEC only reports DROPPED packets.

Could this be the result of a FIFO overflow/buffer management issue?

What steps should be taken to help diagnose the cause and/or prevent it from occurring?

Thanks!

Re: P4080 DTSEC FIFO Issue

sharper — Wed, 23 Mar 2016 19:21:35 GMT

Is there a control/status register somewhere that might help pin down the problem?

Re: P4080 DTSEC FIFO Issue

bpe — Fri, 25 Mar 2016 14:22:53 GMT

RDRP os a low-level conter, it increments for any dropped frame.

There is another counter, RODC, which counts frames dropped due to

no buffer condition. See DPAARM, Section 8.4.4.3.33. Note that Fman

can be configured to send pause frames when it detects a buffer pool

depletion, see Section 8.4.6.18.3. For other error types that may

cause frames to be dropped see Sections 8.3.7 and 8.4.6.18.

Registers that can help in finding the root cause of the problem

are FM_EPI and various BMI statistic counters, see Table 8-42, offsets

from 0x200 and the corresponding register description.

Have a great day,
Platon

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topic P4080 DTSEC FIFO Issue in P-Series

P4080 DTSEC FIFO Issue

Re: P4080 DTSEC FIFO Issue

Re: P4080 DTSEC FIFO Issue