Configuring Mdt Switchover Parameters; Enabling Switch-Group Reuse Logging - HP MSR ASM Configuration Manual

Step
1. Enter system view.
2. Enter VPN instance view.
3. Configure a share-group
address and an MTI binding.

Configuring MDT switchover parameters

In some cases, the traffic rate of the customer network multicast data might fluctuate around the MDT
switchover threshold. To avoid frequent switching of multicast traffic between the share-MDT and the
switch-MDT:
MDT switchover does not take place immediately after the multicast traffic rate exceeds the
•
switchover threshold. It takes place after a switch-delay period has passed, during which the traffic
rate must keep higher than the switchover threshold.
Likewise, a backward switching does not take place immediately after the multicast traffic rate
•
comes back under the MDT switchover threshold. It takes place after a switch-holddown period has
passed, during which the traffic rate must keep lower than the switchover threshold.
To configure MDT switchover parameters:
Step
1. Enter system view.
2. Enter VPN instance view.
3. Configure the
switch-group-pool address
range and the switchover
criteria.
4. Configure the switch-delay
period.
5. Configure the
switch-holddown period.

Enabling switch-group reuse logging

For a given VPN, if the number of VPN multicast streams to be switched to switch-MDTs exceeds the
number of addresses in the switch-group-pool, the VPN instance on the source-side PE device can reuse
the addresses in the address pool. With switch-group reuse logging enabled, the address reuse
information will be logged.
Configuration guidelines
Attributed to the MD module, the group address reuse logging information has a severity level of
•
informational. For more information about the logging information, see Network Management and
Monitoring Configuration Guide.
Command
system-view
ip vpn-instance vpn-instance-name
multicast-domain share-group
group-address binding mtunnel
mtunnel-number
Command
system-view
ip vpn-instance vpn-instance-name
multicast-domain
switch-group-pool
switch-group-pool { mask |
mask-length } [ threshold
threshold-value | acl acl-number ]
*
multicast-domain switch-delay
switch-delay
multicast-domain holddown-time
interval
238
Remarks
N/A
N/A
No share-group address or MTI
binding is configured.
Remarks
N/A
N/A
By default, no switch-group-pool is
configured and multicast traffic is
never switched to a switch-MDT.
Optional.
5 seconds by default.
Optional.
60 seconds by default.