A router is configured to use standard metrics. The router has a single link to a Level 2 IS-IS
neighbor.
What is the maximum metric for that link?
A.
63
B.
254
C.
1023
D.
65534
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should be C.
http://www.juniper.net/documentation/en_US/junos13.2/topics/topic-map/isis-wide-metrics.html
Normally, IS-IS metrics can have values up to 63. The total cost to a destination is the sum of the metrics on all outgoing interfaces along a particular path from the source to the destination. By default, the total path metric is limited to 1023. This metric value is insufficient for large networks and provides too little granularity for traffic engineering, especially with high-bandwidth links. A wider range of metrics is also required if route leaking is used.
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I think the answer “A” is correctly.
Because this question ask about maximum metric of “that link”, not ask about metric from source to destination (Path Metric). Also the answer is “A” (63) correctly.
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