Alcatel-Lucent 7750 SR-OS, Configuration Manual

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Configuring IP Router Parameters
Page 24 7750 SR OS Router Configuration Guide
Creating an IP Address Range
An IP address range can be reserved for exclusive use for services by defining the
config>router>service-prefix command. When the service is configured, the IP address must be
in the range specified as a service prefix. If no service prefix command is configured, then no
limitation exists.
Addresses in the range of a service prefix can be allocated to a network port unless the exclusive
parameter is used. Then, the address range is exclusively reserved for services.
When defining a range that is a superset of a previously defined service prefix, the subset will be
replaced with the superset definition. For example, if a service prefix exists for 10.10.10.0/24, and
a new service prefix is configured as 10.10.0.0/16, then the old address (10.10.10.0/24) will be
replaced with the new address (10.10.0.0/16).
When defining a range that is a subset of a previously defined service prefix, the subset will
replace the existing superset, providing addresses used by services are not affected; for example, if
a service prefix exists for 10.10.0.0/16, and a new service prefix is configured as 10.10.10.0/24,
then the 10.10.0.0/16 entry will be removed, provided that no services are configured that use
10.10.x.x addresses other than 10.10.10.x.