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Zorluk: OrtaIPv6 Static Routing

A network engineer is configuring a static route on a Cisco router to reach remote network 2001:db8:3c4d:10::/642001:\text{db8}:3\text{c}4\text{d}:10::/64. The adjacent router's interface uses the link-local IPv6 address fe80::1\text{fe80}::1 and is directly attached to local interface GigabitEthernet0/0/1\text{GigabitEthernet0/0/1}. Which Cisco IOS command correctly establishes this static route?

  1. ipv6 route 2001:db8:3c4d:10::/64 GigabitEthernet0/0/1 fe80::1Cevap
  2. B
    ipv6 route 2001:db8:3c4d:10::/64 fe80::1
  3. C
    ipv6 route 2001:db8:3c4d:10::/64 GigabitEthernet0/0/1 fe80::fffe:1
  4. D
    ip route 2001:db8:3c4d:10::/64 GigabitEthernet0/0/1 fe80::1

Cevap

The command 'ipv6 route 2001:db8:3c4d:10::/64 GigabitEthernet0/0/1 fe80::1' correctly configures the fully specified static route.
When configuring an IPv6 static route using a link-local next-hop address, Cisco IOS requires a fully specified static route that includes both the local exit interface and the link-local next-hop IPv6 address. This is required because link-local IPv6 addresses are only unique on a single link and could be used on multiple interfaces simultaneously.

Adım Adım Çözüm

1
Identify the target IPv6 static routing command keyword and prefix syntax.
IPv6 static routes must begin with 'ipv6 route' followed by the target destination prefix and prefix length (2001:db8:3c4d:10::/642001:\text{db8}:3\text{c}4\text{d}:10::/64).
Cisco IOS requires the explicit 'ipv6 route' keyword for IPv6 routing entries.
2
Determine the requirement for using link-local next-hop addresses.
Because link-local addresses (FE80::/10) are link-specific and can exist on multiple interfaces of the same router, Cisco IOS cannot resolve the exit interface implicitly.
Specifying both the local interface and the link-local next-hop address (fully specified static route) eliminates exit interface ambiguity.

Anahtar Kavram

IPv6 Fully Specified Static Route with Link-Local Next-Hop
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Konular

IPv6 Static Routing

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