Alcatel-Lucent 7210 SAS M Configuration Manual page 47

autonomous-system
Syntax autonomous-system autonomous-system
no autonomous-system
Context config>router
Description This command configures the autonomous system (AS) number for the router. A router can only
belong to one AS. An AS number is a globally unique number with an AS. This number is used to
exchange exterior routing information with neighboring ASs and as an identifier of the AS itself.
If the AS number is changed on a router with an active BGP instance, the new AS number is not used
until the BGP instance is restarted either by administratively disabling/enabling (shutdown/
no shutdown) the BGP instance or rebooting the system with the new configuration.
Default
No autonomous system number is defined.
Parameters autonomous-system — The autonomous system number expressed as a decimal integer.
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.
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.
7210 SAS M, X Router Configuration Guide
To remove the summary-only option, enter the same aggregate command without the
summary-only parameter.
Values
1 — 4294967295
IP Router Configuration
Page 47