HPE FlexNetwork HSR6800 series Configuration Manual page 78

RRPP ring
A ring-shaped Ethernet topology is called an "RRPP ring". RRPP rings include primary rings and
subrings. You can configure a ring as either the primary ring or a subring by specifying its ring level.
The primary ring is of level 0, and a subring is of level 1. An RRPP domain contains one or multiple
RRPP rings, one serving as the primary ring and the others serving as subrings. A ring can be in one
of the following states:
•
Health state—All physical links on the Ethernet ring are connected.
•
Disconnect state—Some physical links on the Ethernet ring are broken.
As shown in
set to 0, and that of Ring 2 is set to 1. Ring 1 is configured as the primary ring, and Ring 2 is
configured as a subring.
Control VLAN and data VLAN
1. Control VLAN.
In an RRPP domain, a control VLAN is a VLAN dedicated to transferring Rapid Ring Protection
Protocol Data Units (RRPPDUs). On a device, the ports accessing an RRPP ring belong to the
control VLANs of the ring, and only such ports can join the control VLANs.
An RRPP domain is configured with two control VLANs: one primary control VLAN, which is the
control VLAN for the primary ring, and one secondary control VLAN, which is the control VLAN
for subrings. All subrings in the same RRPP domain share the same secondary control VLAN.
After you specify a VLAN as the primary control VLAN, the system automatically configures the
VLAN whose ID is the primary control VLAN ID plus one as the secondary control VLAN.
IP address configuration is prohibited on the control VLAN interfaces.
2. Data VLAN.
A data VLAN is a VLAN dedicated to transferring data packets. Both RRPP ports and
non-RRPP ports can be assigned to a data VLAN.
Node
Each device on an RRPP ring is a node. The role of a node is configurable. RRPP has the following
node roles:
•
Master node—Each ring has only one master node. The master node initiates the polling
mechanism and determines the operations to be performed after a change in topology.
•
Transit node—Transit nodes include all nodes except the master node on the primary ring and
all nodes on subrings except the master nodes and the nodes where the primary ring intersects
with the subrings. A transit node monitors the state of its directly-connected RRPP links and
notifies the master node of the link state changes, if any. Based on the link state changes, the
master node decides the operations to be performed.
•
Edge node—A node residing on both the primary ring and a subring at the same time. An edge
node is a special transit node that serves as a transit node on the primary ring and an edge
node on the subring.
•
Assistant-edge node—A node residing on both the primary ring and a subring at the same
time. An assistant-edge node is a special transit node that serves as a transit node on the
primary ring and an assistant-edge node on the subring. This node works in conjunction with
the edge node to detect the integrity of the primary ring and perform loop guard.
As shown in
node of Ring 1. Device B, Device C, and Device D are the transit nodes of Ring 1. Device E is the
master node of Ring 2, Device B is the edge node of Ring 2, and Device C is the assistant-edge node
of Ring 2.
Primary port and secondary port
Each master node or transit node has two ports connected to an RRPP ring, one serving as the
primary port and the other serving as the secondary port. You can determine the role of a port.
Figure 17, Domain 1 contains two RRPP rings: Ring 1 and Ring 2. The level of Ring 1 is
Figure 17, Ring 1 is the primary ring and Ring 2 is a subring. Device A is the master
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