Configuring Mdt Switchover Parameters - HP FlexNetwork 7500 Series Configuration Manual

Step
Enter MD view.
2.
Specify the MD source
3.
interface.

Configuring MDT switchover parameters

To decrease traffic interruption caused by frequent default-MDT to data-MDT switchovers, you can
specify a data-delay period. The switchover occurs a data-delay period after the VPN multicast data
first arrives, regardless of whether VPN multicast data keeps arriving during the period.
Perform this task on PE devices.
To configure MDT switchover parameters:
Step
Enter system view.
1.
Enter MD view.
2.
Configure the data-group
3.
range and the default-MDT
to data-MDT switchover
criterion.
Set the data-delay period.
4.
Enabling data-group reuse logging
For a given VPN, the number of VPN multicast streams to be switched to data-MDTs might exceed
the number of addresses in the data-group address range. In this case, the VPN instance on the
source-side PE device can reuse the addresses in the address range. With data-group reuse logging
enabled, the address reuse information will be logged.
Attributed to the MD module, the group address reuse logging information has a severity level
informational. For more information about the logging information, see Network Management and
Monitoring Configuration Guide.
Perform this task on PE devices.
To enable data-group reuse logging:
Step
Enter system view.
1.
Enter MD view.
2.
Enable data-group reuse
3.
logging.
Configuring BGP MDT
If PIM-SSM is running on the public network, you must configure BGP MDT.
Command
multicast-domain vpn-instance
vpn-instance-name
source interface-type
interface-number
Command
system-view
multicast-domain vpn-instance
vpn-instance-name
data-group group-address
{ mask-length | mask } | acl
acl-number ]
data-delay delay
Command
system-view
multicast-domain vpn-instance
vpn-instance-name
log data-group-reuse
196
Remarks
N/A
By default, an MD source
interface does not exist.
Remarks
N/A
N/A
By default, the data-group range
is not configured. The
default-MDT to data-MDT
switchover never takes place.
The default setting is 3 seconds.
Remarks
N/A
N/A
By default, data-group reuse
logging is disabled.