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Any concerns about having different models in place during a hardware refresh?

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I have an old pair of 4500s set up as transparent routers. My plan is to upgrade these appliances to 5500s. I have installed the same OS version on the new boxes and have also uploaded the current configuration from a backup of the existing appliance. WMG-1 is set as the director of the pair. My plan is to remove one appliance from the Web Gateway console, perform the physical swap then add that appliance back in (running on the new 5500). I will then repeat the process for the other gateway. My question is will I have issues if I perform the swap one gateway at a time? Will the difference in models affect anything since this is not a true clustered environment? Should I swap one before the other based on their role in the pair?

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McAfee Employee

Re: Any concerns about having different models in place during a hardware refresh?

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Hello,

Technically this isn't an issue. The only thing you need to keep in mind is uneven loadbalancing. The 4500 series is much...much less speedy than the 5500 series. What can happen is that the 4500 boxes will have performance issues while the 5500 are almost idle.

You should use an external loadbalancer with weighting for that. The weighting factor should be at around 7.

thanks,

Michael

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McAfee Employee

Re: Any concerns about having different models in place during a hardware refresh?

Jump to solution

Hello,

Technically this isn't an issue. The only thing you need to keep in mind is uneven loadbalancing. The 4500 series is much...much less speedy than the 5500 series. What can happen is that the 4500 boxes will have performance issues while the 5500 are almost idle.

You should use an external loadbalancer with weighting for that. The weighting factor should be at around 7.

thanks,

Michael

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