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Figure 129 – Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) User Manual

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Multi-Service IronWare Switching Configuration Guide

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53-1003036-02

Initializing a new ERN

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ERN 4 stays in the Pending state, transmits R-APS (NR) messages, and continues to block the
left interface.

FIGURE 129

Initializing an ERP topology - II

Figure 130

shows the next sequence of events. The actions of each ERN are:

ERN 1 terminates R-APS received on the blocked port, unblocks the non-failed port, stops
transmitting R-APS (NR) messages, and enters the Pending state.

ERN 2 takes no action.

ERN 3 takes no action.

ERN 4 stays in the Pending state and transmits R-APS (NR) messages.

FIGURE 130

Initializing an ERP topology - III