[f-nsp] dns keepalive checks on "unknown" ports

[David J. Hughes]

On 12/11/2004, at 10:37 AM, Michael Renner wrote:

> Ahhh, yeah, that would be great if it wasn't for strange limitations 
> in the foundry firmware. Quoting from the documentation [1]:
>
> "You cannot base an alias port’s health on the health of a UDP port or 
> a port that is not well-known to the ServerIron."

Wow!  I've seen some "odd" things on the SI's but that one just about 
takes the cake.  Logic, useability, and firmware development strategies 
are obviously mutually exclusive :)



> Bummer. But since it's only DNS the "excessive" requests aren't really 
> a problem. About the window - oh well - something I've to live with I 
> guess ;).

We had about 20 port aliased VIPs (to handle legacy addresses and other 
ugliness) and the "window" actually was a significant problem.  Luckily 
for us these were POP3 VIPs so I didn't find this issue about non-well 
known tcp ports.

>
> Other than that my setup looks fine or is there still room for 
> improvement?

Looks fine to me.


David
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