iFIT Applications on an L3VPN

On an L3VPN, you can configure iFIT measurement points, in end-to-end or hop-by-hop mode, to monitor network performance. You can deploy iFIT on an L3VPN as follows:

1. Deploy an L3VPN, and import private network traffic to the ingress.
2. Configure the ingress as an iFIT measurement point from which the measurement starts.
3. Set other measurement points based on the statistics collection mode.
   • End-to-end statistics collection: Only the egress is configured as the iFIT measurement point to collect performance statistics.
   • Hop-by-hop measurement: iFIT measurement points are configured on each node that traffic passes through to collect performance statistics.
4. Each measurement point reports the statistics to the NMS. Users can view the statistics on the GUI.

Figure 1 shows the typical networking of iFIT end-to-end performance measurement on an L3VPN. iFIT measurement points are deployed on the ingress and egress of the L3VPN to monitor network performance in real time.

Figure 1 Application of iFIT end-to-end performance measurement on an L3VPN

Figure 2 shows the typical networking of iFIT hop-by-hop performance measurement on an L3VPN. iFIT measurement points are deployed on nodes through which traffic passes on the L3VPN to monitor network performance in real time.

Figure 2 Application of iFIT hop-by-hop performance measurement on an L3VPN

After iFIT is deployed, it measures the packet loss and delay of end-to-end and hop-by-hop service packets on the L3VPN in real time. This allows customers to promptly adjust services when network performance deteriorates.