Highlighted
samuelthan
1 Copper

PowerConnect 6248 - Recieved Frame Check Sequence Errors

Jump to solution

I'm configuring a 2 PowerConnect in stack mode.  I can't seem to resolve this error - Recieved Frame Check Sequence Errors.

Both stacks are in the lastest firmware version 3.3.4.1. Physical connections are tight. 

Anyone can help ?

0 Kudos
2 Solutions

Accepted Solutions
samuelthan
1 Copper

Re: PowerConnect 6248 - Recieved Frame Check Sequence Errors

Jump to solution

Hi,

 I've taken your advice and remove one cable at a time.

1 - xg1:

RBYT:3855a050 RPKT:dd2b08c TBYT:a5c977be TPKT:a135eb0

RFCS:0 RFRG:0 RJBR:0 RUND:0 ROVR:0

TFCS:0 TERR:0

1 - xg2:

RBYT:7a281363 RPKT:645786e TBYT:9002bce8 TPKT:c4fe455

RFCS:64 RFRG:3e RJBR:0 RUND:0 ROVR:0

TFCS:0 TERR:0

2 - xg1:

RBYT:9e5bf4f5 RPKT:39a7828 TBYT:8a962446 TPKT:a2eef6d

RFCS:39 RFRG:1a3 RJBR:0 RUND:0 ROVR:0

TFCS:0 TERR:0

2 - xg2:

RBYT:a5c97db4 RPKT:a135eb5 TBYT:3855ce02 TPKT:dd2b095

RFCS:0 RFRG:0 RJBR:0 RUND:0 ROVR:0

TFCS:0 TERR:0

No matter what cable i remove or plugin i get erro on   1 -xg2and 2-xg1  (i've even use a new cable all together for both ports - 1M or 3M)  Still same error pumping out of 1-xg2 and 2-xg1

Hence i decided to bite the bullet and swap out the module card itself. (I have a 2 unconfigured 6224 laying around, since it's the same 6200 series i swap the cards)

Since then...  no error

"Show stack-port counter"  =  shows 0 error for everything

"Show stack-port diag" = show 0 for everything

A side question,  since swapping out the module for both stacks.  I notice that all my configuration is gone(meaning my switch ask me to whether i want to perform the Wizard). Is that expected ?

 

Re: PowerConnect 6248 - Recieved Frame Check Sequence Errors

Jump to solution

The stacking modules are not hot swappable.  So if you removed the module card with the switch running that could explain the switch going back to a default with no configuration.

Get Support on Twitter @DellCaresPro

Download the Dell Quick Resource Locator app today to access PowerEdge support content on your mobile device! (iOS, Android, Windows)

6 Replies

Re: PowerConnect 6248 - Recieved Frame Check Sequence Errors

Jump to solution

Are you using the 1 meter or 3 meter cable that is compatible from Dell?  

Are the cables kinked or have they been at some point?  

Are these the only cables that you have?  Do you have others available to test for a better or different response?

Are the stacked switches in a controlled environment wiring closet?  Is there any outside interference that may be causing the FCS errors.

Do you have access to the CLI of the switch?  Can you show the output of the command

console# show stack-port diag

Get Support on Twitter @DellCaresPro

Download the Dell Quick Resource Locator app today to access PowerEdge support content on your mobile device! (iOS, Android, Windows)

samuelthan
1 Copper

Re: PowerConnect 6248 - Recieved Frame Check Sequence Errors

Jump to solution

I'm using the 1 meter cable that comes with the Dell. I'll be digging around but don't think i have spare ones to test.

What interference do you suggest that may cause FCS errors ? The switch is placed in an enclosure.

Here's the out put of the show stack-port diag.  Thanks again for your response

Legend:

RBYT : Received Bytes                         RPKT : Received Packets

TBYT : Transmitted Bytes                      TPKT : Transmitted Packets

RFCS : Received Frame Check Sequence Errors   RFRG : Received Fragment Errors

RJBR : Received Jabber Errors

RUND : Received Underrun Errors               ROVR : Received Overrun Errors

TFCS : Transmit Frame Check Sequence Errors   TERR : Transmit Errors

1 - xg1:

RBYT:3855a050 RPKT:dd2b08c TBYT:a5c977be TPKT:a135eb0

RFCS:0 RFRG:0 RJBR:0 RUND:0 ROVR:0

TFCS:0 TERR:0

1 - xg2:

RBYT:7a281363 RPKT:645786e TBYT:9002bce8 TPKT:c4fe455

RFCS:6427fa1 RFRG:3e03b RJBR:0 RUND:0 ROVR:0

TFCS:0 TERR:0

2 - xg1:

RBYT:9e5bf4f5 RPKT:39a7828 TBYT:8a962446 TPKT:a2eef6d

RFCS:3996fb4 RFRG:1a33b RJBR:0 RUND:0 ROVR:0

TFCS:0 TERR:0

2 - xg2:

RBYT:a5c97db4 RPKT:a135eb5 TBYT:3855ce02 TPKT:dd2b095

RFCS:0 RFRG:0 RJBR:0 RUND:0 ROVR:0

TFCS:0 TERR:0

0 Kudos

Re: PowerConnect 6248 - Recieved Frame Check Sequence Errors

Jump to solution

If you have 2 cables connected in an "X" pattern.  You can remove one cable and see if the bandwidth decreases and the FCS errors stop.  If no change you reinsert that cable and remove the second.  If one cable or connector group is having errors and not the other then we have isolated the issue to that cable or connector.  

You can call in for possible replacement of the identified components under warranty.

Get Support on Twitter @DellCaresPro

Download the Dell Quick Resource Locator app today to access PowerEdge support content on your mobile device! (iOS, Android, Windows)

samuelthan
1 Copper

Re: PowerConnect 6248 - Recieved Frame Check Sequence Errors

Jump to solution

Hi,

 I've taken your advice and remove one cable at a time.

1 - xg1:

RBYT:3855a050 RPKT:dd2b08c TBYT:a5c977be TPKT:a135eb0

RFCS:0 RFRG:0 RJBR:0 RUND:0 ROVR:0

TFCS:0 TERR:0

1 - xg2:

RBYT:7a281363 RPKT:645786e TBYT:9002bce8 TPKT:c4fe455

RFCS:64 RFRG:3e RJBR:0 RUND:0 ROVR:0

TFCS:0 TERR:0

2 - xg1:

RBYT:9e5bf4f5 RPKT:39a7828 TBYT:8a962446 TPKT:a2eef6d

RFCS:39 RFRG:1a3 RJBR:0 RUND:0 ROVR:0

TFCS:0 TERR:0

2 - xg2:

RBYT:a5c97db4 RPKT:a135eb5 TBYT:3855ce02 TPKT:dd2b095

RFCS:0 RFRG:0 RJBR:0 RUND:0 ROVR:0

TFCS:0 TERR:0

No matter what cable i remove or plugin i get erro on   1 -xg2and 2-xg1  (i've even use a new cable all together for both ports - 1M or 3M)  Still same error pumping out of 1-xg2 and 2-xg1

Hence i decided to bite the bullet and swap out the module card itself. (I have a 2 unconfigured 6224 laying around, since it's the same 6200 series i swap the cards)

Since then...  no error

"Show stack-port counter"  =  shows 0 error for everything

"Show stack-port diag" = show 0 for everything

A side question,  since swapping out the module for both stacks.  I notice that all my configuration is gone(meaning my switch ask me to whether i want to perform the Wizard). Is that expected ?

 

Re: PowerConnect 6248 - Recieved Frame Check Sequence Errors

Jump to solution

The stacking modules are not hot swappable.  So if you removed the module card with the switch running that could explain the switch going back to a default with no configuration.

Get Support on Twitter @DellCaresPro

Download the Dell Quick Resource Locator app today to access PowerEdge support content on your mobile device! (iOS, Android, Windows)

samuelthan
1 Copper

Re: PowerConnect 6248 - Recieved Frame Check Sequence Errors

Jump to solution

Ok.  Thanks.

I guess only when i've experience it then i know what to do/what not to do    next time.

0 Kudos