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julien_21453's avatar
julien_21453
Icon for Nimbostratus rankNimbostratus
May 10, 2011

trunk between LTM

Hello everybody,

 

 

I have some question about the opportunity of the trunk.

 

We want to connect two LTM 8900 together for enabling the High Availability. Perhaps not usefull..

 

On the LTM, we have trunk (proprietary ?) capabilities ? and LACP ? which is not enabled by default.

 

 

What is the best design about trunking (without any switch between LTM)?

 

I have seen that with LACP, we have the capabilities to detect errors on link.

 

 

Thank you in advance for your feedback.

 

 

 

 

config
design

3 Replies

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  • Chris_Miller's avatar
    Chris_Miller
    Icon for Altostratus rankAltostratus
    May 10, 2011
    I've always connected 2 cables in a trunk between them and used LACP without issue.
  • Hamish's avatar
    Hamish
    Icon for Cirrocumulus rankCirrocumulus
    May 10, 2011
    I always recommend a switch. Otherwise you don't know if the fault is local (Possible local switchport fault), or the remote system failing...

     

     

    - Of course introducing a switch also means you have one more item of equipment to fail... But I find stacked cisco 3750's to be pretty good for mitigating that feature...

     

     

    H
  • julien_21453's avatar
    julien_21453
    Icon for Nimbostratus rankNimbostratus
    May 13, 2011
    Thank you very much for your reply. I didn't see any issue on the askf5 portal about trunking.

     

    We will connect the two LTM together without any switch.