[j-nsp] ICMP Type - IP Unreachable Notification

[Harri Makela]

Hi All

I have following ICMP type (ip unreachable notification) and I want to know if our MX/J series routers responds to this ICMP type or not. i.e. I have checked for another ICMP type  "ip mask reply" with following command and I don`t get anything response back which means JUNOS doesn`t reply for mask request.


sudo nping -icmp --icmp-type mask-request x.x.x.x --count 5


x.x.x.x is our internet facing IP address. 


I am looking for something similar which I can try to get the behavior of JUNOS. I know if we want to block this type of ICMP , then we have to apply a filter which I really don`t want at the moment.

Thanks in adavance !!
Eddie