Rrppdus - HPE FlexFabric 5700 Series Configuration Manual

Each master node or transit node has two ports connected to an RRPP ring, a primary port and
a secondary port. You can determine the role of a port.
In terms of functionality, the primary port and the secondary port of a master node have the
following differences:
The primary port and the secondary port are designed to play the role of sending and
receiving Hello packets, respectively.
When an RRPP ring is in Health state, the secondary port logically denies data VLANs and
permits only the packets from the control VLANs.
When an RRPP ring is in Disconnect state, the secondary port forwards packets from data
VLANs.
In terms of functionality, the primary port and the secondary port of a transit node are the same.
Both are designed for transferring protocol packets and data packets over an RRPP ring.
As shown in
port and the secondary port of the master node on Ring 1, respectively. Device B, Device C,
and Device D are the transit nodes of Ring 1. Their Port 1 and Port 2 are the primary port and
the secondary port on Ring 1, respectively.
2. Common port and edge port
The ports connecting the edge node and assistant edge node to the primary ring are common
ports. The ports connecting the edge node and assistant edge node only to the subrings are
edge ports. You can determine the role of a port.
As shown in
and Port 2 and Device C's Port 1 and Port 2 access the primary ring, so they are common ports.
Device B's Port 3 and Device C's Port 3 access only the subring, so they are edge ports.
RRPP ring group
To reduce Edge-Hello traffic, you can configure a group of subrings on the edge node or assistant
edge node. You must configure a device as the edge node of these subrings, and another device as
the assistant edge node of these subrings. Additionally, the subrings of the edge node and assistant
edge node must connect to the same subring packet tunnels in major ring (SRPTs). Edge-Hello
packets of the edge node of these subrings travel to the assistant edge node of these subrings over
the same link.
An RRPP ring group configured on the edge node is an edge node RRPP ring group. An RRPP ring
group configured on an assistant edge node is an assistant edge node RRPP ring group. Only one
subring in an edge node RRPP ring group is allowed to send Edge-Hello packets.

RRPPDUs

RRPPDUs of subrings are transmitted as data packets in the primary ring, and RRPPDUs of the
primary ring can only be transmitted within the primary ring.
Table 10 RRPPDU types and their functions
Type
Hello
Link-Down
Common-Flush-FDB
Complete-Flush-FDB
Figure 12, Device A is the master node of Ring 1. Port 1 and Port 2 are the primary
Figure 12, Device B and Device C reside on Ring 1 and Ring 2. Device B's Port 1
Description
The master node initiates Hello packets (also known as Health packets) to detect
the integrity of a ring in a network.
When a port on the transit node, edge node, or assistant edge node fails, the node
initiates Link-Down packets to notify the master node of the disconnection of the
ring.
When an RRPP ring transits to Disconnect state, the master node initiates
Common-Flush-FDB (FDB stands for Forwarding Database) packets. It uses the
packets to instruct the transit nodes, edge nodes, and assistant edge nodes to
update their own MAC address entries and ARP/ND entries.
When an RRPP ring transits to Health state, the master node initiates
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