a)
Explanation of Solution
Path selected by “I”:
The “I” will be equal to “I1” because this interface leads the least cost path form the 1d towards the gateway router “1c”...
b)
Explanation of Solution
Usage of AS-PATH:
Routers utilize AS-PATH attribute to identify and inhibit looping advertisements. It has a list of AS which helps in selecting among multiple paths available to the same prefix. In order to generate the AS-PATH, a prefix is passed to an AS. After passing the prefix, the AS adds its ASN to the existing list in the AS-PATH.
Usage of NEXT-HOP:
The NEXT-HOP attribute specifies the IP address of the first router which includes the advertised path to a given prefix...
c)
Explanation of Solution
Path selected by “I”:
Let us consider that another “AS” named AS5 is attached in between the path “AS2” and “AS4”.
- The router “1d” can accessible “x” thro...
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Chapter 5 Solutions
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