Forum Discussion

An_oid's avatar
13 years ago

Max length of crossover cable

We are about to deploy a new cluster on customer site, I have asked that the two servers are placed near to each other.  Customer has asked what is the maximum length permitted for the crossover cable for interconnects.

 

Any ideas?

  • This is governed by hardware and according to http://en.wikipedia.org/wiki/Category_5_cable:

     

    Maximum cable segment length

    According to the ANSI/TIA/EIA standard for category 5e copper cable (TIA/EIA 568-5-A[5]), the maximum length for a cable segment is 100 meters (328 feet). If longer runs are required, the use of active hardware such as a repeater, or a switch, is necessary.

    Mike

  • This is governed by hardware and according to http://en.wikipedia.org/wiki/Category_5_cable:

     

    Maximum cable segment length

    According to the ANSI/TIA/EIA standard for category 5e copper cable (TIA/EIA 568-5-A[5]), the maximum length for a cable segment is 100 meters (328 feet). If longer runs are required, the use of active hardware such as a repeater, or a switch, is necessary.

    Mike

  • Veritas LLT does not limited to length of cable used for connect. Cable lenght matters with standards of networking as mentioned by Mike above.

  • Consider the possibility that you may want to add a node to the cluster at some point in the future. If you've configured cluster comms on X-over cables, you'll have to take the cluster down in order to configure everything on switches.

    I'd advise configuring a couple of VLANs on redundant switches for cluster comms instead.