30.2.1 Overview of operation

For switches using the Ring Protocol and GSRP together, the VLAN mappings for the Ring Protocol and the VLAN information for GSRP VLAN groups need to match. The ring ports for the switches are not subject to GSRP control, and the data transfer status for the ring ports is controlled by the Ring Protocol.

Fault monitoring and path switching for when a fault occurs are performed independently by the Ring Protocol on ring networks and by GSRP on GSRP networks. However, switches that switch to the master during path switching on a GSRP network clear the MAC address table for GSRP switches and aware/unaware switches. At the same time, a flush control frame for the ring network is sent to clear the MAC address tables of switches configuring the ring network.

GSRP direct links use the same line as ring networks, but can also use another line.

The following figure shows an example of the Ring Protocol and GSRP being used together.

Figure 30-9: Example of using Ring Protocol and GSRP (when using direct link in a ring network)

Figure 30-10: Example of using Ring Protocol and GSRP (when direct link is not used in a ring network)