Cisco Cisco Broadband Access Center for Cable 4.1

${var-name}—This syntax is a straight substitution. If the variable is not found, the parser will 
generate an error.

${var-name, ignore}—This syntax lets the template parser ignore this option if the variable value is 
not found in the properties hierarchy.

${var-name, default-value}—This syntax provides a default value if the variable is not found in the 
properties hierarchy.

Examples 

 illustrate both correct and incorrect usage of option 11.

# Valid, using macro variable for max CPE's, straight substitution

option 18 ${MAX_CPES}

# Valid, using macro variable for max CPE's, ignore option if variable not found

# option 18 will not be defined in the DOCSIS configuration file if MAX_CPES

# is not found in the properties hierarchy

option 18 ${MAX_CPES, ignore}

# Valid, using macro variable for max CPE's with a default value

option 18 ${MAX_CPES, 1}

# Valid, using macro variable for vendor option

option 43.200 hex ${MACRO_VAR_HEX}

# Valid, using macro variable for vendor option

option 43.201 ascii ${MACRO_VAR_ASCII}

# Valid, using macro variable for vendor option

option 43.202 ip ${MACRO_VAR_IP}

# Valid, using macro variable in double quotes

option 18 "${MAX_CPES}"

# Valid, using macro variable within a value

option 43.131 ascii "hostname ${HOSTNAME}"

# Valid, using macro variables in multi-valued options

option 11 ${ACCESS_CONTROL_MIB, 

.mib-2.docsDev.docsDevMIBObjects.docsDevNmAccessTable.docsDevNmAccessEntry.docsDevNmAccess

Control.1}, Integer, ${ACCESS_CONTROL_VAL, 3}

# Valid, using macro variable in an include statement

include "${EXTRA_TEMPLATE}"

# Valid, using macro variable in an include statement with a default value

include "${EXTRA_TEMPLATE, modem_reset.tmpl}"

# Valid, using macro variable in an include statement with a default value

include "${EXTRA_TEMPLATE, modem_reset}.tmpl"

# Valid, using macro variable in an include statement with an ignore clause

include "${MY_TEMPLATE, ignore}"

# Invalid, using macro variable as the option number

option ${MAX_CPES} 1

# Invalid, using macro variable with space in name

option 18 ${MAX CPES}