Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 507)

Multi-Service IronWare Switching Configuration Guide 477
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Ring initialization
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Ring initialization
Figure 107 shows the initial state of the ring, when MRP is first enabled on the ring’s switches. On
the master the primary interface starts in forwarding mode and the secondary interface starts in
blocking mode. All ring interfaces on member nodes begin in the preforwarding state (PF).
FIGURE 107 MRP ring – initial state
An RHP is an MRP protocol packet used to monitor the health of the ring. The source address is the
MAC address of the master node and the destination MAC address is a protocol address for MRP.
The Master node generates RHPs and sends them on the ring. The state of a ring interface is
influenced by the RHPs.