262
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter VPN instance view.
ip vpn-instance
vpn-instance-name
N/A
3.
Configure a share-group
address and an MTI binding.
multicast-domain share-group
group-address
binding mtunnel
mtunnel-number
No share-group address or MTI
binding is configured.
Configuration guidelines
•
After a BGP peer is configured with the
peer connect-interface
command, the MTI interface
automatically obtains the
connect-interface
address and uses it as its own IP address. This IP
address cannot be used in the VPN network any more. Otherwise the MTI interface will fail to
obtain an IP address. When you configure multiple BGP peers on the same device, you must
specify the same
connect-interface
address 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
.
•
On the switch, you must use the
service-loopback group
command to configure a
multicast-tunnel
type service loopback group before an MTI interface can be brought up. For
more information about the
service-loopback group
command, see
Layer 2—LAN Switching
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
CAUTION:
Do not configure switch-group-pool when BIDIR-PIM runs on the public network. If you do so,
multicast packets cannot be correctly forwarded on the public network.
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.
Perform the following configuration on the PE.
To configure MDT switchover parameters:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter VPN instance view.
ip vpn-instance
vpn-instance-name
N/A
