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Figure 2.89 Ring topology
Figure 2.89 shows each Ethernet Ring Node is connected to an adjacent Ethernet Ring Nodes
participating in the same Ethernet Ring using two independent links (i.e. two ways). In the Ethernet
ring, loops can be avoided by guaranteeing that traffic may flow on all but one of the ring links at any
time. This particular link is called Ring Protection Link (RPL). A control message called R-APS
coordinates the activities of switching on/off the RPL. Under normal conditions, this link is blocked by
the Owner Node. Thus, loops can be avoided by this mechanism. In case an Ethernet ring failure
occurs, the RPL Owner node will be responsible for unblocking its end of the RPL to allow RPL to be
used as a backup link. The RPL is the backup link when one link failure occurs.
Summary of Contents for EH7506
Page 35: ...29 Figure 2 40 Mapping Table of DSCP ECN page...
Page 53: ...47 2 9 1 GVRP Settings Figure 2 62 GVRP setting page...
Page 55: ...49 2 9 2 GMRP Settings Figure 2 63 GMRP setting page...
Page 76: ...70...
Page 90: ...84 Figure 2 97 iA Ring Example Topology...
Page 98: ...92 Management Address Indicates neighbor s management IP address...
Page 110: ...104 Figure 2 115 Reboot page...
Page 117: ...111...
