11-56
Default Level
2: System level
Parameters
router-id
: Router ID in IP address format.
Description
Use the
router-id
command to specify a router ID for the router.
Use the
undo router-id
command to remove a router ID.
To run IPv6 BGP protocol, a router must have a router ID, an unsigned 32-bit integer and the unique
ID of the router in the AS.
A router ID can be configured manually. If not, the system will select a router ID automatically from the
current interfaces’ IPv4 addresses. The selection sequence is the highest IPv4 address of Loopback
interfaces’ addresses, then the highest IPv4 address of physical interfaces’ addresses if no Loopback
interfaces are configured.
Only when the interface with the router ID is removed or the manually configured router ID is removed,
will the system select another Router ID. To improve network reliability, it is recommended to configure
the IPv4 address of a loopback interface as the router ID.
Examples
# Specify the router ID of the router as 10.18.4.221.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] router-id 10.18.4.221
synchronization (IPv6 address family view)
Syntax
synchronization
undo synchronization
View
IPv6 address family view
Default Level
2: System level
Parameters
None
Description
Use the
synchronization
command to enable the synchronization between IPv6 BGP and IGP.
Use the
undo synchronization
command to disable the synchronization.
The feature is disabled by default.
With this feature enabled and when a non-BGP router is responsible for forwarding packets in an AS,
IPv6 BGP speakers in the AS cannot advertise routing information to other ASs unless all routers in
the AS know the latest routing information.