For POS port, as long as you can set up the network are not unfamiliar, 10GE Ethernet frame format frames sealed package, while POS is a transmission frame package, the package structure is completely different, 10GE packages biggest benefit is to reduce port costs, bandwidth, high, then go MSTP, the main problem is not to do the bandwidth and port security detection, and POS to get rid of the overhead rate 10GE itself cannot achieve, but in the link protection is stronger than 10GE.
In this paper, the route NETGEAR networking environment, to introduce physical router connection if all finished properly, but it is unreasonable failure to specifically look steps.
A networking environment
Netgear router interfaces POS1/0/0 through routers interconnect transmission equipment and other physical layer and link layer interfaces at both ends are normal, but is nowhere.
Second, the failure analysis
1, when the POS interface, docking problems, you should check on the two devices are the following parameters, execute display interface pos, check the interface clock mode, when two routers connected directly or POS interfaces connected via WDM, you should set one master clock mode, the other end of the slave clock mode, otherwise it is possible to generate a link oscillation, when the switching device is connected POS interfaces, POS interfaces should be set from the main clock mode, the clock mode end of the clock, from one end of the clock, the normal .
2, execute display interface pos, scrambling check the status of the interface are the same at both ends scrambled state of the interface(http://www.amazon.com/dp/B00DQDJJKU) should be consistent, otherwise it may affect the data forwarding.
3, run display pos interface, check the interface overhead bytes, found inconsistent with the peer C2, C2 to end 255 and the end of C2 is 22, if you do not match C2, docking port forwarding will not work properly, resulting in can not ping.
Third, Troubleshooting
1, the command system-view, enter the system view.
2, the command interface pos 1/0/0, enter the specified interface view POS interface.
3, the command flag c2 255, POS interface configuration C2 255.
Once configured, C2 interfaces at both ends are 255, the ends can be interconnected, the fault is resolved, we can know from the above, when using POS interface, docking, you should first make sure that both ends of the overhead bytes, clock mode and scrambling state match.