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Difficulty: EasyRouting Table Components

An administrator examines an IPv4 routing table entry on a Cisco router:

`D 192.168.50.0/24 [90/2170112] via 10.1.1.2, 00:04:12, GigabitEthernet0/1`

Which two statements correctly describe the components of this routing entry? (Select TWO.)

  1. The value 90 represents the administrative distance of the route source.Answer
  2. The IP address 10.1.1.2 identifies the next-hop router address to forward packets destined for 192.168.50.0/24.Answer
  3. C
    The value 90 represents the calculated metric cost to reach the destination network.
  4. D
    The routing entry was configured manually as a static route as indicated by the code letter D.

Answer

The correct statements are that the value 90 represents the administrative distance of the route source, and the IP address 10.1.1.2 identifies the next-hop router address for forwarding packets.
In a Cisco IP routing table entry formatted as `[AD/Metric] via Next-Hop`, the first number inside the square brackets (90) is the administrative distance, which reflects the trustworthiness of EIGRP routes. The IP address following 'via' (10.1.1.2) represents the next-hop forwarding address.

Step-by-Step Solution

1
Parse the bracketed numbers [90/2170112] in the routing table output.
The first number inside the brackets (90) is the Administrative Distance (AD), and the second number (2170112) is the Metric (cost).
Cisco IOS routing tables always display route metrics in the standard format [Administrative Distance / Metric].
2
Identify the next-hop address following the 'via' keyword.
The IP address 10.1.1.2 is identified as the next-hop router IP.
The 'via' field specifies the neighboring router interface to which packets matching the prefix must be sent.
3
Interpret the source code prefix 'D'.
'D' represents EIGRP dynamic routing protocol, not a static route.
The routing table legend uses 'S' for static routes and 'D' for EIGRP routes.

Key Concept

Interpretation of Cisco IP routing table entry components including administrative distance, metric, next-hop address, and route source codes.
Estimated Time:45s
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Topics

Routing Table Components

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