What action will router R1 take with a packet that has a destination IPv6 address of 2001:db8:cafe:5::1?

What action will router R1 take with a packet that has a destination IPv6 address of 2001:db8:cafe:5::1?

• A. Drop the packet
• B. Forward the packet out Serial 0/0/0
• C. Send the packet to the default gateway
• D. Send an ICMP error message

Answer: (B)

The router R1 will forward the packet out Serial 0/0/0 because it has a valid destination IPv6 address, and there is a route in R1's routing table that matches this address. When a packet is received, routers check their routing tables to find the best route to the destination. If there is a match, the router forwards the packet to the next hop based on that routing entry. In this instance, the destination address 2001:db8:cafe:5::1 corresponds to a specific network that R1 is aware of and has a route for. Therefore, it will use the designated outgoing interface, which in this case is Serial 0/0/0, to send the packet onward to its destination. Forwarding packets based on valid routing information is a fundamental function of routers in a network.

The router R1 will forward the packet out Serial 0/0/0 because it has a valid destination IPv6 address, and there is a route in R1's routing table that matches this address. When a packet is received, routers check their routing tables to find the best route to the destination. If there is a match, the router forwards the packet to the next hop based on that routing entry.

In this instance, the destination address 2001:db8:cafe:5::1 corresponds to a specific network that R1 is aware of and has a route for. Therefore, it will use the designated outgoing interface, which in this case is Serial 0/0/0, to send the packet onward to its destination. Forwarding packets based on valid routing information is a fundamental function of routers in a network.