D-Link DGS-6600-48TS Configuration Guide - Page 192

Volume 3-Layer 2 Configurations / Chapter 19-Ethernet Ring Protection Switching (ERPS) Relationship with other modules VLAN module Each ERP instance creates one dedicated R-APS controlled VLAN for transmitting R-APS messages. User must create this VLAN by VLAN commands, and then configure this VLAN as RAPS controlled VLAN. ERP instance will be running in a "not-operational" state due to several non-consistent configurations. For example, the R-APS controlled VLAN is not created or the ring ports are not the tagged members of R-APS controlled VLAN. If a user removes the ring port from R-APS controlled VLAN or configures ring ports to untagged port members when ERP instances are enabled, the instance will be changed to "not-operational" state, and traffic on the ring is not protected until the configuration has been recovered. Spanning Tree module When the ERP instance is enabled on ring ports, the STP function can not be enabled on both ring ports, and the STP BPDU can not be forwarded by the ring ports. LoopBack Detection (LBD) module When the ERP instance is enabled on ring ports, the LBD function can not be enabled on both ring ports, but if these ring ports are blocked by LBD function, it may affect traffic of the ERP instance. LACP module The link aggregation group can be configured as one ring port of ring node. And, this link aggregation group will run the ERPS function as an individual interface such as physical port. Member port of link aggregation group can not be configured as one ring port of ring node. After the physical port has been configured as one ring port of ring node, if this port is added to link aggregation group, it will be removed from ring node. And, administrator may configure link aggregation group as ring port of ring node. Multicast Filter Mode The R-APS message will be treated as multicast packets, and if the multicast filter mode of R-APS controlled VLAN or ring ports is "filter unregistered groups", the R-APS message will be filtered and dropped. But, as the R-APS messages are protocol packets for ERPS protocol, and "filter unregistered groups" mode is used to filter unregistered multicast data. So, it is suggested that the multicast filter mode of R-APS controlled VLAN or ring ports should not e configured as "filter unregistered groups". Port Security module When the ERP instance is enabled on ring ports, the "Port Security" function can be enabled on both ring ports, but if these ring ports are blocked by "Port Security" module, it may affect service traffic of the ERP instance. 802.1x module When the ERP instance is enabled on ring ports, the "802.1x" function can be enabled on both ring ports, but if these ring ports are blocked by "802.1x" module, it may affect service traffic of the ERP instance. Traffic Segmentation module Traffic segmentation function may affect forwarding of R-APS messages over R-APS controlled channel if the forwarded ring port is not forwarding interface of received ring port. DGS-6600 Configuration Guide 192