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Comprehensive and Detailed Explanation From Exact Extract:

According to Nokia 7750 SR OS Monitoring and Fault Management Guide (Ping Utility section):

“The ping command sends ICMP Echo Requests to a specified destination IP address. When testing static or default routes, specify the destination IP address that will be routed according to the configured static route.”

You configured a default route on R1 pointing towards 10.3.3.2.

The IP address 10.5.5.5 belongs to the network behind R2.

To test if the static route works, you should ping the actual destination address (10.5.5.5), which will force R1 to use the default route.

Hence, the correct command is:

ping 10.5.5.5

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Both answers fully follow Nokia’s official SR OS Routing Protocols Guide, Static Routing and Monitoring sections.