How many different Matching Flags are there in FIT line pattern and what are there uses?
There are total 4 flags supported by Feature Intent Templates (FIT) :-
O: Optional
M: Must to have
F: Fuzzy match
E: Exact match
As per name suggest, these flags have below meanings:-
Optional: The given line pattern can be or cannot be present in the configuration
Must to have: Given line pattern has to be present in the configuration
Exact match: The matched configuration has to be of same length and type as per line pattern
Fuzzy match: It is used for partially matching the configuration lines.
Here is an example for Fuzzy match:
If you want to compare
ip address 10.10.10.10 255.255.255.0 secondary
Then you can use below line pattern
ip address $ip_address $ip_subnet
As we can see that “Secondary” word is not matched by this line pattern, but still if this is a Fuzzy match. Then it will return this configuration line as matched.
Note: The fuzzy match will only work as long as configuration line exactly starts with the line pattern.
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