When configuring an IPv6 static route with a next-hop link-local address, what additional information is necessary?

When configuring an IPv6 static route with a next-hop link-local address, what additional information is necessary?

• A. Routing protocol information
• B. Interface number and type
• C. DNS server information
• D. Global unicast address

Answer: (B)

When configuring an IPv6 static route that uses a next-hop link-local address, it is essential to include the interface number and type. This is because link-local addresses in IPv6 are not unique across the entire network; they are only valid on the local network segment. To ensure that the routing device can correctly direct packets to this next-hop link-local address, it must know which interface to use. In IPv6, link-local addresses are indicated by the prefix "FE80::/10," and since multiple interfaces may exist on the same device, specifying the interface guarantees packets are sent through the correct pathway. Without identifying the specific interface, the router would not know how to reach the next-hop link-local address, potentially leading to routing failures. Global unicast addresses, routing protocol information, and DNS server information are not necessary in this context for establishing a static route with a link-local next hop. Global unicast addresses are your standard on-link addresses and do not apply to link-local communication. Routing protocols play a different role in dynamic routing strategies and aren't required for static routes. Lastly, DNS server information pertains to name resolution and does not impact how routes are configured or used.

When configuring an IPv6 static route that uses a next-hop link-local address, it is essential to include the interface number and type. This is because link-local addresses in IPv6 are not unique across the entire network; they are only valid on the local network segment. To ensure that the routing device can correctly direct packets to this next-hop link-local address, it must know which interface to use.

In IPv6, link-local addresses are indicated by the prefix "FE80::/10," and since multiple interfaces may exist on the same device, specifying the interface guarantees packets are sent through the correct pathway. Without identifying the specific interface, the router would not know how to reach the next-hop link-local address, potentially leading to routing failures.

Global unicast addresses, routing protocol information, and DNS server information are not necessary in this context for establishing a static route with a link-local next hop. Global unicast addresses are your standard on-link addresses and do not apply to link-local communication. Routing protocols play a different role in dynamic routing strategies and aren't required for static routes. Lastly, DNS server information pertains to name resolution and does not impact how routes are configured or used.