You are configuring OSPFv2 on a router in your network. The router has not been assigned a router ID manually. It has three active physical interfaces with IP addresses 192.168.1.1, 192.168.2.1, and 10.0.0.1. It also has one loopback interface with IP address 172.16.0.1. What IP address will OSPFv2 select as the router ID in this case?
OSPFv2 selects the router ID in the following order: First, it uses the manually configured router ID if one is set. If not, it chooses the highest IP address on any active loopback interfaces. If no loopback interfaces are present, it selects the highest IP address among active physical interfaces. In this scenario, since there is a loopback interface with IP address 172.16.0.1, OSPFv2 will select this as the router ID. Even though the physical interfaces have higher IP addresses numerically (e.g., 192.168.2.1), the presence of a loopback interface takes precedence.
Ask Bash
Bash is our AI bot, trained to help you pass your exam. AI Generated Content may display inaccurate information, always double-check anything important.
Why does OSPFv2 prioritize loopback interfaces over physical interfaces when selecting a router ID?
Open an interactive chat with Bash
What happens if there is no loopback interface and no manually configured router ID for OSPFv2?
Open an interactive chat with Bash
Can the router ID in OSPFv2 be changed after it has been assigned?
Open an interactive chat with Bash
Cisco CCNA 200-301
IP Connectivity
Your Score:
Report Issue
Bash, the Crucial Exams Chat Bot
AI Bot
Loading...
Loading...
Loading...
Pass with Confidence.
IT & Cybersecurity Package
You have hit the limits of our free tier, become a Premium Member today for unlimited access.
Military, Healthcare worker, Gov. employee or Teacher? See if you qualify for a Community Discount.
Monthly
$19.99
$19.99/mo
Billed monthly, Cancel any time.
3 Month Pass
$44.99
$14.99/mo
One time purchase of $44.99, Does not auto-renew.
MOST POPULAR
Annual Pass
$119.99
$9.99/mo
One time purchase of $119.99, Does not auto-renew.
BEST DEAL
Lifetime Pass
$189.99
One time purchase, Good for life.
What You Get
All IT & Cybersecurity Package plans include the following perks and exams .