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New Contributor
Posts: 3
Registered: ‎10-04-2018
Accepted Solution

D-Port traffic test fails on new DWDM links with "Local port error(s): GENERIC"



we are extending 2 existing fabrics via DWDM links (16G)

adding new X6-8 Directors to existing 8510-8 cores


the DWDM links negotiate to N16 fine and extend the fabrics to the new switches

now to verify the links we use the D-Port feature,


configured the ports with

portdisable <portnum>

portcfgdport –enable –dwdm <portnum>

portcfgpersistentenable <portnum>


portdporttest –start <portnum>



Anyway the link traffic test continuously fails with “Local port error(s):   GENERIC” (see below)

In the –detail output we see 1m frames tx and rx and no errors apart from 1 loss of signal.

Behaviour is the same on all 4 links we test.


Version 8510-8 is v7.4.1.e

Version X6-8 is v8.0.2c


Any hints on why the link traffic test fails?

Thanks in advance




portdporttest --show 9/6

D-Port Information:


Slot:                           9

Port:                           6

Remote WWNN:                   10:00:00:27:f8:e7:a9:b5

Remote port index:             70

Mode:                           Manual

No. of test frames:             1 Million

Test frame size:               1024 Bytes

FEC (enabled/option/active):   Yes/No/No

CR (enabled/option/active):     Yes/No/No

Start time:                     Mon Feb 18 11:12:11 2019

End time:                       Mon Feb 18 11:13:10 2019

Status:                         FAILED


Test                   Start time     Result         EST(HH:MM:SS)   Comments


Electrical loopback     11:12:14       PASSED         --------       ----------

Optical loopback       --------       SKIPPED         --------       ----------

Link traffic test       11:12:29       FAILED         --------       ----------


Roundtrip link latency:         unknown

Egress power:                   Tx: -1.5 dBm, Rx: -3.6 dBm, Diff: 2.1 dBm (Loss is within tolerable limit)

Ingress power:                 Rx: -2.0 dBm, Tx: -2.2 dBm, Diff: 0.0 dBm (No Loss)


Failure report:

Local port error(s):   GENERIC

Super Contributor
Posts: 286
Registered: ‎04-04-2018

Re: D-Port traffic test fails on new DWDM links with "Local port error(s): GENERIC"



could you clear counters, run test and share output of portstatsshow and porterrshow?


Please mark this response as "Accept as Solution" if it answers your question.

Marian Bezeg
New Contributor
Posts: 3
Registered: ‎10-04-2018

Re: D-Port traffic test fails on new DWDM links with "Local port error(s): GENERIC"

[ Edited ]

Hi all,


for the records: the test went fine as soon as I used the -time Option instead of relying on the default (1 mio frames)




portdporttest --start -time 00:10 <port>

portdporttest --show <port>



Status:                         PASSED


Test                    Start time      Result          EST(HH:MM:SS)   Comments


Electrical loopback     07:36:27        PASSED          --------        ----------

Optical loopback        --------        SKIPPED         --------        ----------

Link traffic test       07:36:46        PASSED          --------        ----------




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