H3C Technologies H3C S10500 Series Switches - Manual (Page 67)

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Figure 18 Schematic diagram for a single-ring load balancing network
Domain 1 Ring 1
Device A Device B
Device D Device C
Domain 2
Intersecting-ring load balancing
In an intersecting-ring network, you can also achieve load balancing by configuring multiple domains.
As shown in
Figure
19 , Ring 1 is the primary ring, and Ring 2 is the subring in both Domain 1 and
Domain 2. Domain 1 and Domain 2 are configured with different protected VLANs. Device A is
configured as the master node of Ring 1 in Domain 1. Device D is configured as the master node of Ring
1 in Domain 2. Device E is configured as the master node of Ring 2 in both Domain 1 and Domain 2.
However, different ports on Device E are blocked in Domain 1 and Domain 2. With the configurations,
you can enable traffic of different VLANs to travel over different paths in the subring and primary ring to
achieve intersecting-ring load balancing.
Figure 19 Schematic diagram for an intersecting-ring load balancing network
Protocols and standards
RFC 3619 Extreme Networks' Ethernet Automatic Protection Switching (EAPS) Version 1 is related to
RRPP.