The three-node network in Figure 1 shows two MPLS SDPs and one GRE SDP defined between the nodes. These SDPs connect VPLS1 and VPLS2 instances that are defined in the three nodes. With this feature, the operator has local CLI-based and SNMP-based statistics collection for each VC used in the SDPs. This allows for traffic management of tunnel usage by the different services and with aggregation the total tunnel usage.
Figure 1. SDP statistics for VPLS and VLL services
