239
Configuring BGP route update delay
Perform this task to configure BGP to delay sending route updates on reboot to reduce traffic loss.
With this feature enabled, BGP redistributes all routes from other neighbors on reboot, selects the
optimal route, and then advertises it.
To configure BGP route update delay:
1. Enter system view.
system-view
N/A
2. Enter BGP instance view.
bgp
as-number [
instance
instance-name ]
N/A
3. Configure BGP to delay
sending route updates on
reboot.
bgp update-delay on-startup
seconds
By default, BGP immediately
sends route updates on reboot.
4. (Optional.) Configure BGP to
immediately send route
updates for routes that
match a prefix list.
bgp update-delay on-startup
prefix-list
prefix-list-name
By default, no prefix list is
specified to filter routes.
Use this command when the
updates for the specified routes
must be sent immediately.
This command is available only
to IPv4 prefix lists.
Configuring a startup policy for BGP route updates
About startup policy for BGP route updates
Perform this task to configure BGP to send route updates with the specified attributes within the
specified period after reboot.
As shown in Figure 59, if Router B restarts and sends route updates before route convergence
completes, traffic sent from Router A through Router B might be lost. This feature enables Router B
to send route updates with the specified attribute values within the specified period after reboot, so
that Router A can forward traffic through Router C.
Figure 59 Network diagram
Router B
Router C
Router A
IP network
To Next Page
Loading...
Need help?
General