SNR S2940-8G-v2 Switch Configuration Guide
MRPP Configuration
Chapter 58
MRPP Configuration
58.1 Introduction to MRPP
MRPP (Multi-layer Ring Protection Protocol), is a link layer protocol applied on Ethernet loop pro-
tection. It can avoid broadcast storm caused by data loop on Ethernet ring, and restore commu-
nication among every node on ring network when the Ethernet ring has a break link. MRPP is the
expansion of EAPS (Ethernet link automatic protection protocol).
MRPP protocol is similar to STP protocol on function, MRPP has below characters, compare
to STP protocol:
• MRPP specifically uses to Ethernet ring topology
• fast convergence, less than 1 s. ideally it can reach 100-50 ms.
58.1.1 Conception Introduction
Figure 58.1: MRPP Sketch Map
1. Control VLAN
Control VLAN is a virtual VLAN, only used to identify MRPP protocol packet transferred in the
link. To avoid confusion with other configured VLAN, avoids configuring control VLAN ID to be
the same with other configured VLAN ID. The different MRPP ring should configure the different
control VLAN ID.
2. Ethernet Ring (MRPP Ring)
Ring linked Ethernet network topology.
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