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Excessive late collisions & Excessive crc on a trunk.

vaillancourtmichel
Occasional Advisor

Excessive late collisions & Excessive crc on a trunk.

hi,
i have replaced an old switch with an hp 4204vl. and Since then i getting an error "Excessive late collisions & Excessive crc" on the trunk that i configer.what can be the Reason and how can i fix it??

8 REPLIES
Glen Van Lehn
Frequent Advisor

Re: Excessive late collisions & Excessive crc on a trunk.

'late collisions' can indicate a duplex mismatch -- one side thinks it's in full-duplex mode & the other is in half-duplex

you could check that and force full-duplex if needed

glen
rick jones
Honored Contributor

Re: Excessive late collisions & Excessive crc on a trunk.

Although if you don't have ancient busted kit at the other end of the links to the 4204vl my personal suggestion would be to set both ends to autonegotiate.
there is no rest for the wicked yet the virtuous have no pillows
vaillancourtmichel
Occasional Advisor

Re: Excessive late collisions & Excessive crc on a trunk.

How do I configer autoneg?
rick jones
Honored Contributor

Re: Excessive late collisions & Excessive crc on a trunk.

I assume that on the new HP 4204vl that autoneg is already enabled. That would imply that the configuring that needs to be done would be on the other end, which will depend entirely on what that happens to be.
there is no rest for the wicked yet the virtuous have no pillows
Trevor Commulynx
Regular Advisor

Re: Excessive late collisions & Excessive crc on a trunk.

Is the Trunk Fibre or Copper?
vaillancourtmichel
Occasional Advisor

Re: Excessive late collisions & Excessive crc on a trunk.

On the ather side i have Switch 5412zl.
and the trunk is copper.
rick jones
Honored Contributor

Re: Excessive late collisions & Excessive crc on a trunk.

Starting at www.hp.com, click on "Support & Drivers." Then enter 5412zl in the box and hit enter. In my case I then selected the "HP E5400 zl Seitch Series" link, then "Manuals" down in the Resources section. There should be a command line reference there (several versions actually, pick the one which matches the firmware running on your switch. If you scroll down far enough there will also be a "Getting Started" section, and then farther still will be a "Setup and Install - general" section with a few promising-looking titles in there as well.
there is no rest for the wicked yet the virtuous have no pillows
vaillancourtmichel
Occasional Advisor

Re: Excessive late collisions & Excessive crc on a trunk.

Thank you very much for your help.