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Zorluk: ZorIPv6 Static Routing

An engineer is configuring a backup fully-specified IPv6 static route on router R1 toward the remote destination network 2001:db8:500:10::/642001:\text{db8}:500:10::/64. The primary path is learned via OSPFv3. The backup route must forward traffic to the next-hop router's link-local address fe80::2\text{fe80::2} via local interface GigabitEthernet0/1 with an administrative distance of 130. Complete the required Cisco IOS configuration command.

Cevap:ipv6 route 2001:db8:500:10::/64 【GigabitEthernet0/1】 【fe80::2】 130

Cevap

The complete command is 'ipv6 route 2001:db8:500:10::/64 GigabitEthernet0/1 fe80::2 130'.
When configuring an IPv6 static route using a link-local next-hop address, Cisco IOS requires a fully specified static route format: `ipv6 route <prefix/length> <exit-interface> <link-local-address> [administrative-distance]`. Thus, GigabitEthernet0/1 must be specified as the exit interface in the first blank, and fe80::2 as the next hop in the second blank.

Adım Adım Çözüm

1
Identify the target IPv6 network prefix and length.
The destination prefix is 2001:db8:500:10::/64.
IPv6 static routes require the destination network prefix with prefix length.
2
Determine the required syntax for using a link-local address as a next hop.
When a link-local address (fe80::2) is specified as the next hop, Cisco IOS requires the local exit interface (GigabitEthernet0/1) to precede the link-local address in the command.
Link-local addresses are only unique to the local link, so the router must know which egress interface to send the traffic out of.
3
Append the administrative distance parameter.
An administrative distance of 130 is placed at the end of the command.
The primary OSPFv3 route has an administrative distance of 110; setting the static route to 130 creates a floating static route.

Anahtar Kavram

IPv6 Fully Specified Static Route and Floating Static Route Syntax
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Konular

IPv6 Static Routing

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