I know the x440-8t does not utilize a fan for cooling, but is it necessary to eat 3 RUs? Any chance a mount design change can be tested to change the real estate needed to maybe 2 RU?
The policy I use without issue is similar to:
Switch1.4 # sh policy telnet
Policies at Policy Server:
Policy: telnet
entry telnet {
if match any {
source-address 12.34.56.78/32 ;
source-address 12.34.56.79/32 ;
source-address 12.34.56....
The link is approx 4 miles and the customer has moved our gear. They are using a multi mode patch cable on the single mode link. While this is wrong and being corrected today, the link was working over it until recently.