INS_CNGE3FE8MS[POE][HO] Rev. 11.7.17 PAGE 257
INSTRUCTION MANUAL CNGE3FE8MS[POE][HO]
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my-device# show erps detail statistics
^
% Invalid word detected at ‘^’ marker.
! Show details for specific set of instances:
my-device# show erps 1-6 detail
...
There are some slightly more complex features of the syntax that center around sequences of
optional items such as [a] [b] [c].
» Each of a, b, c may or may not be present (“a c” is valid, as is no input)
» Order is not important (“a c” and “c a” are equivalent)
» Each optional item can be present exactly no times or one time (not repeated)
There are variations:
» Group of options, of which at least one must be present: { [a] [b] [c] }*1
» Group of options, where one or more has fixed position: [a] {[b]} [c]
» This says that ‘b’ is optional, but if it is present then it must follow after ‘a’ (if ‘a’ is present) and it
must come before ‘c’ (if ‘c’ is present)
For example, assuming a command with this syntax:
a [b] [c] { d | e } {[f] [g]}*1 then valid input examples are:
» ‘a d f’, because ‘b’ and ‘c’ are optional, ‘d’ is picked instead of ‘e’, and ‘f’ is chosen as the
mandatory optional
» ‘a d f g’, because ‘b’ and ‘c’ are optional, ‘d’ is picked instead of ‘e’, and both ‘f’ and ‘g’ are
chosen in the final group of optional
» ‘a c b e g’, because the ‘b’ optional is omitted, ‘e’ is picked instead of ‘d’, and ‘g’ is chosen for
the mandatory optional
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