D-Link DGS-3630 User Manual 1 - Page 624

DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide After clicking the Start button, the following page will appear. Figure 11-24 Ping MPLS (Start) Window Click the Stop button to stop the MPLS ping. Click the Back button to return to the previous window. Traceroute MPLS IPv4 This window is used for hop-by-hop fault localization as well as path tracing the LSP of the specified FEC. If there is no LSP for the specified FEC, the "Destination unreachable" message will be displayed. Otherwise, MPLS echo request messages will be sent out to along the LSP of the specified FEC. The TTL in the outmost label of the MPLS echo requests is set successively to 1, 2, 3, and so on. It forces the echo request expired at each successive LSR along the LSP. The LSR returns an MPLS echo reply. If the sender cannot receive a reply before the timeout, the trace route will stop. To view the following window, click MPLS > Traceroute MPLS IPv4, as shown below: Figure 11-25 Traceroute MPLS IPv4 Window The fields that can be configured are described below: Parameter IPv4 Address Mask Timeout Description Enter the FEC IPv4 address here whose LSP connectivity will be checked. Enter the FEC subnet mask here. Enter the trace-route timeout value here. The range is from 1 to 99 seconds. Click the Start button to initiate the MPLS route trace. 612