3.3 Configure and verify IPv4 and IPv6 static routing.
Objective 3.3 sits in IP Connectivity, which carries 25% of the CCNA exam. The questions below are original, written from the official objective title above, and each explanation cites the Cisco page it rests on.
Objective title verbatim from the official objectives. Cisco exam page ↗
A worked example
Shown solved, with the whole explanation open: this is what every question here carries.
You are adding IPv6 static routes to a Layer 3 switch that currently routes IPv4 only and has an IPv6 address on one SVI. Which step is still required?
The concept
Addressing an interface for a protocol and forwarding that protocol are separate switches. A device can hold addresses of a second family and still refuse to move packets in it, so the forwarding of that family is turned on explicitly before any route of that family is entered.
Why this answer
The switch already routes IPv4 and already has an address on a Layer 3 interface, which covers two of the three prerequisites. The remaining one is the global command that turns on forwarding of IPv6 packets, and without it the static routes have nothing to act on.
- AExpress forwarding speeds up the path once forwarding is on. It is not what turns forwarding on.
- BA link-local address is generated automatically on a Layer 3 interface once IPv6 is active, and the management port plays no part in routing.
- CMTU tuning belongs to path discovery for oversized packets and has nothing to do with whether a route can be configured.
- Correct. Forwarding of IPv6 packets is enabled globally first.
Now you: objective 3.3 questions
No account needed. The explanation opens when you answer.
Sample question 1 of 3
OSPFv3 already supplies 2001:DB8:ACAD::/48 to this switch when an engineer enters the command below.
Device(config)# ipv6 route 2001:DB8:ACAD::/48 GigabitEthernet1/0/1 FE80::2 130What does the trailing 130 achieve?
Sample question 2 of 3
A neighbor's link-local address is the intended next hop for a prefix, and an engineer types the line below.
Device(config)# ipv6 route 2001:DB8:5::/64 FE80::1What does the command still need?
Sample question 3 of 3
An engineer writes one IPv6 static route out a serial point-to-point link and another out a Gigabit Ethernet link. Which one needs the next-hop address stated?
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Continue practicingRead the sources
These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.