DG-BG4300N User Manual
9.6.3 Traceroute Diagnostic
Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit
delays of packets across an Internet Protocol (IP) network.
9.6.4 OAM Fault Management
– Connectivity Verification
In order to isolate the ATM interface problems, you can use ATM OAM loopback cells to verify
connectivity between VP/VC endpoints, as well as segment endpoints within the VP/VC.
OAM F4 cells operate at the VP level. They use the same VPI as the user cells, however, they use two
different reserved VCIs, as follows:
VCI=3 Segment OAM F4 cells.
VCI=4 End-to-End OAM F4 cells.
OAM F5 cells operate at the VC level. They use the same VPI and VCI as the user cells. To distinguish
between data and OAM cells, the PTI field is used as follows:
PTI=100 Segment OAM F5 cells processed by the next segment.
