Alcatel-Lucent 7750 SR OS - Manual (Page 90)

Configuration Commands
Page 90 7750 SR OS Router Configuration Guide
To force the new router ID to be used, issue the shutdown and no shutdown commands for each
protocol that uses the router ID, or restart the entire router.
The no form of the command to reverts to the default value.
Default The system uses the system interface address (which is also the loopback address).
If a system interface address is not configured, use the last 32 bits of the chassis MAC address.
Parameters router-id — The 32 bit router ID expressed in dotted decimal notation or as a decimal value.
service-prefix
Syntax service-prefix ip-prefix/mask | ip-prefix netmask [exclusive]
no service-prefix ip-prefix/mask | ip-prefix netmask
Context config>router
Description This command creates an IP address range reserved for IES or VPLS services.
The purpose of reserving IP addresses using service-prefix is to provide a mechanism to reserve one
or more address ranges for services.
When services are defined, the address must be in the range specified as a service prefix. If a service
prefix is defined, then IP addresses assigned for services must be within one of the ranges defined in
the service-prefix command. If the service-prefix command is not configured, then no limitations
exist.
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 a range that is a superset of a previously defined service prefix is defined, the subset is
replaced with the superset definition; for example, if a service prefix exists for 10.10.10.0/24, and a
service prefix is configured as 10.10.0.0/16, then 10.10.10.0/24 is replaced by the new 10.10.0.0/16
configuration.
When a range that is a subset of a previously defined service prefix is defined, the subset replaces 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 service prefix is configured as 10.10.10.0/24, then the 10.10.0.0/
16 entry is removed as long as no services are configured that use 10.10.x.x addresses other than
10.10.10.x.
The no form of the command removes all address reservations. A service prefix cannot be removed
while one or more service uses an address or addresses in the range.
Default no service-prefix - no IP addresses are reserved for services.
Parameters ip-prefix/mask — The IP address prefix to include in the service prefix allocation in dotted decimal
notation.
Values ipv4-prefix: a.b.c.d (host bits must be 0)
ipv4-prefix-length: 0 — 32
ipv6-prefix: x:x:x:x:x:x:x:x (eight 16-bit pieces)
x:x:x:x:x:x:d.d.d.d
x:
[0 — FFFF]H