Huawei Quidway S3700 Series Configuration Manual page 61

Quidway S3700 Series Ethernet Switches
Configuration Guide - Reliability
Figure 3-1 Application of crossed RRPP rings
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Issue 01 (2011-10-26)
Master
Node
SwitchD
RRPP Sub-Ring 1
Master
Node
RRPP Sub-Ring 2
SwitchE
RRPP domain
An RRPP domain consists of a group of interconnected switches with the same domain ID
and control VLAN ID. An RRPP domain consists of the elements such as the RRPP major
ring and subring, control VLAN, master node, transit node, and primary port and secondary
port.
An RRPP domain is identified by its ID, which is an integer.
RRPP ring
Physically, an RRPP ring corresponds to an Ethernet ring. An RRPP ring is a part of its
RRPP domain. An RRPP domain consists of one RRPP ring or multiple crossed RRPP
rings.
RRPP major ring and subring
If an RRPP domain consists of multiple crossed RRPP rings, you can configure one ring
as the major ring and other rings as subrings by setting their levels.
An RRPP domain has only one major ring.
Protocol packets of subrings are transmitted in the major ring as data packets, and protocol
packets of the major ring are transmitted only in the major ring.
Control VLAN
A VLAN that transmits RRPP protocol packets in an RRPP domain is called a control
VLAN. A control VLAN can contain only RRPP ports.
An RRPP domain is configured with two control VLANs: the primary control VLAN and
the sub control VLAN. You need to specify only the primary control VLAN. The VLAN
whose ID is one more than the ID of the primary control VLAN becomes the sub control
VLAN.
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RRPP Domain
SwitchB
Edge Transit
Node Transit Node
RRPP Major-Ring
SwitchC
Edge Transit
Node
Transit Node
3 RRPP Configuration
SwitchA
Master Node
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