H3C S6850 Series, Руководство по настройке

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Configuring DRNI
About DRNI
Distributed Resilient Network Interconnect (DRNI) virtualizes two physical devices into one system
through multichassis link aggregation.
DRNI network model
As shown in Figure 1 , DRNI virtualizes two devices into a distributed-relay (DR) system, which
connects to the remote aggregation system through a multichassis aggregate link. To the remote
aggregation system, the DR system is one device.
Figure 1 DRNI network model
The DR member devices are DR peers to each other. For features that require centralized traffic
processing (for example, spanning tree), a DR member device is assigned the primary or secondary
role based on its DR role priority. The secondary DR device passes the traffic of those features to the
primary DR device for processing. If the DR member devices in a DR system have the same DR role
priority, the device with the lower bridge MAC address is assigned the primary role.
DRNI defines the following interface roles for each DR member device:
•
DR interface —Layer 2 aggregate interface connected to the remote aggregation system. DR
interfaces connected to the same remote aggregation system belong to one DR group.
In
Figure 1 , Bridge-Aggregation 1 on Device A and Bridge-Aggregation 2 on Device B belong to
the same DR group. DR interfaces in a DR group form a multichassis aggregate link.
•
Intra-portal port (IPP) —Interface connected to the DR peer for internal control. Each DR
member device has only one IPP. The IPPs of the DR member devices transmit DRNI protocol