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Difficulty: MediumIPv6 Static Routing

Fill in the blank with the exact Cisco IOS command needed to configure the specified static route.

Answer:To configure a fully specified IPv6 static route for the destination subnet 2001:db8:acad:1::/64 using the outbound interface GigabitEthernet0/1 and the next-hop link-local address fe80::1, enter the command: 【ipv6 route 2001:db8:acad:1::/64 GigabitEthernet0/1 fe80::1】

Answer

ipv6 route 2001:db8:acad:1::/64 GigabitEthernet0/1 fe80::1
When specifying an IPv6 link-local address as the next-hop, Cisco IOS requires a fully specified static route where both the local outbound interface and the neighbor's link-local IPv6 address are declared.

Step-by-Step Solution

1
Identify the target network prefix and length.
Destination network prefix is 2001:db8:acad:1::/64.
Static routing in IPv6 requires specifying the target prefix alongside its prefix length.
2
Determine the interface and next-hop address requirement for link-local routing.
Exit interface is GigabitEthernet0/1 and link-local next-hop address is fe80::1.
Because link-local addresses (fe80::/10) are only unique to a local link, Cisco IOS requires specifying the exit interface along with the link-local next-hop address to form a fully specified static route.
3
Assemble the complete global configuration mode command syntax.
ipv6 route 2001:db8:acad:1::/64 GigabitEthernet0/1 fe80::1
The correct command syntax in Cisco IOS is 'ipv6 route <prefix/length> <exit-interface> <next-hop-link-local-address>'.

Key Concept

IPv6 Fully Specified Static Route Syntax
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Topics

IPv6 Static Routing

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