4000 Router Series Layer 3 - IP Routing Command Reference

398

<Sysname> reset bgp all ipv6

router id (system view)

Use router id to configure a global router ID.

Use undo router id to remove the global router ID.

Syntax

router id router-id

undo router id

Default

No global router ID is configured.

Views

System view

Predefined user roles

network-admin

Parameters

router-id: Specifies a router ID in IP address format.

Usage guidelines

Some routing protocols use a router ID to identify a device. You can configure a global router ID, which

is used by routing protocols that have no router ID configured.

If no global router ID is configured, the highest loopback address, if any, is used as the router ID. If no

loopback address is available, the highest physical interface IP address is used, regardless of the

interface status. If no IP address is configured for any interface, the router ID is 0.0.0.0.

During an active/standby switchover, the standby main processing unit (MPU) checks whether the

previous router ID that is backed up before switchover is valid. If not, it selects a new router ID.

If the interface IP address that is selected as the router ID is removed or modified, a new router ID is

selected. Other events, (the interface goes down; after a physical interface address is selected as the

router ID, an IP address is configured for a loopback interface; a higher interface IP address is

configured) will not trigger a router ID re-selection.

After a router ID is changed, use the reset command to make it effective.

Examples

# C on f i gu r e a g l o b a l r ou t e r I D a s 1.1.1.1.

<Sysname> system-view

[Sysname] router id 1.1.1.1

Related commands

router-id

router-id (BGP view)

Use router-id to configure a router ID for BGP.