R3102-R3103-HP 6600/HSR6600 Routers High Availability Configuration Guide

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As shown in Figure 22, Ring 1 is configured as the primary ring of Domain 1 and Domain 2, which
are configured with different protected VLANs. Device A is the master node of Ring 1 in Domain 1.
Device B is the master node of Ring 1 in Domain 2. With such configurations, traffic from different
VLANs can be transmitted on different links for load balancing in the single-ring network.
RRPP ring group
In an edge node RRPP ring group, only an activated subring with the lowest domain ID and ring ID
can send Edge-Hello packets. In an assistant-edge node RRPP ring group, any activated subring that
has received Edge-Hello packets will forward these packets to the other activated subrings. With an
edge node RRPP ring group and an assistant-edge node RRPP ring group configured, only one
subring sends Edge-Hello packets on the edge node, and only one subring receives Edge-Hello
packets on the assistant-edge node, reducing CPU workload.
As shown in Figure 21, Device B is the edge node of Ring 2 and Ring 3, and Device C is the
assistant-edge node of Ring 2 and Ring 3. Device B and Device C need to send or receive Edge-Hello
packets frequently. If more subrings are configured or load balancing is configured for more multiple
domains, Device B and Device C will send or receive a mass of Edge-Hello packets.
To reduce Edge-Hello traffic, you can assign Ring 2 and Ring 3 to an RRPP ring group configured on
the edge node Device B, and assign Ring 2 and Ring 3 to an RRPP ring group configured on Device
C. After such configurations, if all rings are activated, only Ring 2 on Device B sends Edge-Hello
packets.
Typical RRPP networking
Single ring
As shown in Figure 18, only a single ring exists in the network topology. You only need to define an
RRPP domain.
Figure 18 Schematic diagram for a single-ring network
Tangent rings
As shown in Figure 19, two or more rings exist in the network topology and only one common node
exists between rings. You must define an RRPP domain for each ring.
Device A
Device B
Device C
Device D
Master node
Transit node
Domain 1
Ring 1
Transit node
Transit node