Configuring Mdt Switchover Parameters; Enabling Switch-Group Reuse Logging - HP A6600 Configuration Manual

for these BGP peers. Otherwise the MTI interface will also fail to obtain an IP address, either. For more
information about the peer connect-interface command, see Layer 3—IP Routing Command Reference.
PIM on the MTI interface takes effect only after PIM is enabled on at least one interface of the VPN
instance; when PIM is disabled on all the interfaces of the VPN instance, PIM on the MTI interface is
disabled simultaneously.

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, but 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, but it takes place after a switch-holddown period
has passed, during which the traffic rate must keep lower than the switchover threshold.
To do...
1. Enter system view.
2. Enter VPN instance view.
3. Configure the
switch-group-pool address
range and the switchover
criteria.
Configure the switch-delay
4.
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.
To do...
1. Enter system view.
2. Enter VPN instance view.
3. Enable the switch-group reuse
logging.
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.
Use the command...
system-view
ip vpn-instance vpn-instance-name
multicast-domain
switch-group-pool
switch-group-pool { mask |
mask-length } [ acl acl-number ] *
multicast-domain switch-delay
switch-delay
multicast-domain holddown-time
interval
Use the command...
system-view
ip vpn-instance vpn-instance-name
multicast-domain log
switch-group-reuse
230
Remarks
—
—
Required.
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.
Remarks
—
—
Required.
Disabled by default.