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Operating Systems
Solaris
Solaris IP Multipathing (IPMP) Help
Post 302153889 by prowla on Thursday 27th of December 2007 05:01:50 AM
12-27-2007
IPMP is great, but beware that the "resilience" it offers can be an illusion.
Oh, and if you're doing it for LAN interfaces, then you need to do the same for disks (SCSI and/or FC), and mains cables too!
Basically you have to sonsider your whole environment and eliminate and SPOFs (Single Points Of Failure).
Welcome to the world of managing datacentre computers!
- If you have a system with a quad ether (eg. qfe) card, then you don't get much resilience by using IPMP on two ports in the same card. You do get protection against accidentally pulling out a single LAN cable, but you are still susceptible to failure of that card, and to an accident involving both cables.
- If your LAN cables run to the same patch panel, then you are susceptible to any problems with that.
- If your cables attach to the same network switch, then you are dependent upon that.
- If your cables all go to the back of the cabinet, then you are susceptible to an accident there. (Some systems have card cages at the front and back of the machine, to allow completely independent routing of the cables.)
- Etc, all the way along the chain.
Oh, and if you're doing it for LAN interfaces, then you need to do the same for disks (SCSI and/or FC), and mains cables too!
Basically you have to sonsider your whole environment and eliminate and SPOFs (Single Points Of Failure).
Welcome to the world of managing datacentre computers!
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