
Tracing and Logging Utilities
strace
Chapter 7188
x25_1, the sub would be 49 (48 + 1 = 49). See the table
below for more examples of the codes to be used for
specific interfaces.
For dual-port cards, the sub code is the decimal
equivalent to the four-digit hexadecimal composite of
the place holder code (70) + the card instance number +
30. The example below shows the calculation for the
interface defined by the device file x25_0p1.
NOTE The sub code for dual-port cards will be the same for
both ports.
Figure 7-2
Table 7-5 Single-port Subnet Interface Codes
Card Calculation
(hexadecimal)
Sub code
(decimal)
First card = 0 (x25_0) 30 + 0 = 30 48
Second card = 1 (x25_1) 30 + 1 = 31 49
Third card = 2 (x25_2) 30 + 2 = 32 50
7030
x25_0p1
card instance number
place holder
Device File
Sub code =
282720
convert to decimal
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