CCNA IP Routing Practice Question
Exhibit
R1(config)# ipv6 route 2001:db8:100::/64 GigabitEthernet0/0
What is the main purpose of this configuration?
ipv6 route 2001:db8:100::/64 GigabitEthernet0/0
⚠ Common exam trap
A frequent exam trap is mistaking the static route command for enabling a routing protocol such as OSPFv3 or assuming it creates a default route. Candidates may also confuse static routes with tunnel interfaces. The command shown explicitly configures a static route to a specific IPv6 prefix via an interface, not a dynamic routing process or a default (::/0) route. Misreading the prefix or interface can lead to selecting incorrect answers. Recognizing that static routes are manual, precise entries that do not activate protocols or tunnels is essential to avoid this trap.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
It creates a specific IPv6 static route to 2001:db8:100::/64 out GigabitEthernet0/0.
This configuration creates an IPv6 static route to a specific destination prefix through the named outgoing interface. In practical terms, the router is being told exactly how to reach that remote IPv6 network. This is not a default route and not a dynamic-routing statement. It is a manually defined path to one destination prefix. The key concept is recognizing the difference between a specific static route and a default route.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
It creates a specific IPv6 static route to 2001:db8:100::/64 out GigabitEthernet0/0.
Why this is correct
This is the correct interpretation because the `ipv6 route` command followed by the exact destination prefix `2001:db8:100::/64` and the exit interface `GigabitEthernet0/0` installs a static route in the IPv6 routing table. The route specifies that any packets destined to addresses within the 2001:db8:100::/64 subnet should be forwarded out that specific interface, without relying on dynamic routing or a separate next-hop IP address.
- ✗
It enables OSPFv3 on GigabitEthernet0/0.
Why it's wrong here
This command, `ipv6 route 2001:db8:100::/64 GigabitEthernet0/0`, is a static-route configuration entry, not a routing-protocol activation. OSPFv3 is a dynamic link-state protocol that is enabled under the router configuration with a process ID and then applied to interfaces via `ipv6 ospf` commands, or by using `ospfv3` in global and interface configuration. The presence of the `ipv6 route` keyword clearly indicates a manual prefix advertisement, and no OSPFv3 process is ever referenced.
When this WOULD be correct
If the question asked about the purpose of a configuration that includes commands like 'ipv6 ospf <process-id> area <area-id>' on GigabitEthernet0/0, then option B would be correct as it would indicate enabling OSPFv3 on that interface.
- ✗
It creates an IPv6 default route.
Why it's wrong here
An IPv6 default route is represented by the prefix `::/0`, which matches all IPv6 addresses, and is typically configured as `ipv6 route ::/0` followed by a next-hop or exit interface. The command in question explicitly targets the unicast prefix `2001:db8:100::/64`, a unique local-looking prefix that only covers a single /64 block, so it cannot serve as a catch-all route. Therefore, this option mischaracterizes the scope of the configured prefix.
When this WOULD be correct
In a different question setup where the configuration explicitly indicates that it is meant to route all IPv6 traffic to an unspecified destination, such as 'set ipv6 route ::/0', this option would correctly describe the creation of an IPv6 default route.
- ✗
It converts the interface into a tunnel.
Why it's wrong here
Tunnels in IPv6 are created by defining an interface with the `interface tunnel` command, specifying tunnel mode (e.g., `tunnel mode ipv6ip`), and setting tunnel source and destination addresses. A static route like the one shown merely adds a forwarding entry to the routing table and has no effect on the physical or logical nature of the exit interface. The `GigabitEthernet0/0` interface remains a standard routed port, not a tunnel interface.
When this WOULD be correct
This option would be correct in a question that asks about a configuration that explicitly sets up a tunnel interface for IPv6 traffic, such as a GRE tunnel or an IPsec tunnel, where the configuration commands include 'tunnel' and specify tunnel endpoints.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
✓It creates a specific IPv6 static route to 2001:db8:100::/64 out GigabitEthernet0/0.Correct answer▾
Why this is correct
This is the correct interpretation because the `ipv6 route` command followed by the exact destination prefix `2001:db8:100::/64` and the exit interface `GigabitEthernet0/0` installs a static route in the IPv6 routing table. The route specifies that any packets destined to addresses within the 2001:db8:100::/64 subnet should be forwarded out that specific interface, without relying on dynamic routing or a separate next-hop IP address.
✗It enables OSPFv3 on GigabitEthernet0/0.Wrong answer — click to see why▾
Why this is wrong here
The command shown is an IPv6 static route configuration (ipv6 route), not an OSPFv3 configuration. OSPFv3 is enabled using the 'ipv6 ospf' command under interface configuration mode, not with a global static route command.
★ When this WOULD be the correct answer
If the question asked about the purpose of a configuration that includes commands like 'ipv6 ospf <process-id> area <area-id>' on GigabitEthernet0/0, then option B would be correct as it would indicate enabling OSPFv3 on that interface.
Why candidates choose this
Students may confuse IPv6 static routing with OSPFv3 because both involve IPv6 routing. Additionally, the interface GigabitEthernet0/0 appears in the command, leading some to think it is enabling a routing protocol on that interface.
✗It creates an IPv6 default route.Wrong answer — click to see why▾
Why this is wrong here
A default route in IPv6 uses the prefix ::/0, not a specific prefix like 2001:db8:100::/64. The command shown specifies a particular destination network, so it is a specific static route, not a default route.
★ When this WOULD be the correct answer
In a different question setup where the configuration explicitly indicates that it is meant to route all IPv6 traffic to an unspecified destination, such as 'set ipv6 route ::/0', this option would correctly describe the creation of an IPv6 default route.
Why candidates choose this
Students might think any static route to an IPv6 network is a default route, especially if they are not careful about the prefix length. The presence of a next-hop interface can also be associated with default routes in some contexts.
✗It converts the interface into a tunnel.Wrong answer — click to see why▾
Why this is wrong here
A static route command does not create a tunnel; it simply adds a route to the routing table. Tunnels are created using interface configuration commands like 'interface tunnel' and require additional parameters such as tunnel source and destination.
★ When this WOULD be the correct answer
This option would be correct in a question that asks about a configuration that explicitly sets up a tunnel interface for IPv6 traffic, such as a GRE tunnel or an IPsec tunnel, where the configuration commands include 'tunnel' and specify tunnel endpoints.
Why candidates choose this
The command includes an interface (GigabitEthernet0/0), and students might confuse this with tunnel interfaces that also specify an outgoing interface. However, static routes and tunnel interfaces serve entirely different purposes.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Quick reference
Routing Protocol Comparison
| Protocol | Metric | Max Hops | Algorithm | Type |
|---|---|---|---|---|
| RIP v2 | Hop count | 15 | Bellman-Ford | Distance vector |
| OSPF | Cost (bandwidth) | Unlimited | Dijkstra (SPF) | Link state |
| EIGRP | Composite metric | Unlimited | DUAL | Hybrid |
| IS-IS | Cost | Unlimited | Dijkstra | Link state |
| BGP | Policy / attributes | Unlimited | Path vector | Path vector |
RIP's 15-hop limit makes it unsuitable for large networks. OSPF and EIGRP dominate modern enterprise deployments.
Go deeper
Related to this question
Learn chapter
OSPFv3 Single-Area Configuration for IPv6
Key term
Interface
An interface is a point of connection or interaction between two systems, devices, or software components that allows them to exchange information or signals.
Key term
Route
A route is a path that data takes through a network from one device or network to another, determined by routing protocols and configured rules.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-301 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 200-301 exam.