Alcatel-Lucent 7450 Configuration Manual page 124

Router Global Commands
prefix-length2 — Specifies the maximum prefix length.
as-number — Specifies as-number.
valid — Specifies a keyword meaning the static entry expresses a valid combination of origin AS
and prefix range.
invalid — Specifies a keyword meaning the static entry expresses an invalid combination of origin
AS and prefix range.
router-id
Syntax router-id ip-address
no router-id
Context config>router
Description
This command configures the router ID for the router instance.
The router ID is used by both OSPF and BGP routing protocols in this instance of the routing table
manager. IS-IS uses the router ID value as its system ID.
When configuring a new router ID, protocols are not automatically restarted with the new router ID.
The next time a protocol is initialized, the new router ID is used. This can result in an interim period
of time when different protocols use different router IDs.
It is possible to configure an SR OS node to operate with an IPv6 only BOF and no IPv4 system
interface address. When configured in this manner, the operator must explicitly define IPv4 router
IDs for protocols such as OSPF and BGP as there is no mechanism to derive the router ID from an
IPv6 system interface address.
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.
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Values 0-4294967295
7450 ESS Router Configuration Guide