This fault depends on the NE80/40 hardware, regardless of the software version.
On an FE interface of the NE40, the configuration of limiting the rate to 5 Mbit/s on the outbound interface can be delivered. The configuration of rate limit to higher than 10 Mbit/s, however, cannot be delivered and the system prompts that the interface bandwidth is insufficient.
[NE40] traffic 20m cdr 20000 psr 20000 cbs 400000 mbs 400000
[NE40-Ethernet1/0/12]diffserv output-queue be 20m
The bandwidth of the port is not enough
1, Check the configuration for correctness. The rate is limited to 20 Mbit/s.
2, Check the interface status. The display interface Ethernet1/0/12 command displays that the interface is auto-sensing and full-duplex on the LPU.
3, Use the diagnosis command to display the following:
[NE40-diag]_d d Ethernet1/0/12
pIf->if_ulBaud is: 10000000 //It is found that the 10-Mbit/s bandwidth is displayed on the MPU
It is determined that the interface was forcibly set to 10 Mbit/s. The FE interface of the NE40/NE80/S8016 cannot run at the rate of 10 Mbit/s in terms of hardware. Therefore, the interface rate is still recorded as 10 Mbit/s on the MPU if the interface rate changes from 10 Mbit/s forcibly set to auto-negotiation. Actually, the interface works at the rate of 100 Mbit/s on the LPU. When the system delivers the configuration of rate limit, the MPU compares the interface bandwidth with the limited rate. If the limited rate is higher than 10 Mbit/s, the system prompts that the limited rate exceeds the interface bandwidth. Delivering the configuration thus fails.
4, Change the interface mode to non-auto-negotiation. Forcibly set the interface rate to 100 Mbit/s and then change the mode to auto-negotiation. Then the fault is cleared and the configuration of rate limit can be delivered.
1, The configuration is incorrect: The set cdr exceeds the interface bandwidth.
2, The interface is forcibly set to 10 Mbit/s.
The FE interface of the NE40/NE80/S8016 can be set to work at the rate of 10 Mbit/s. But the hardware does not support the rate. In interworking, try to avoid forcibly setting the interface rate to 10 Mbit/s, especially in interworking with a hub; otherwise, a fault arises. When the interface was forcibly set to 10 Mbit/s, you must forcibly set the interface rate to 100 Mbit/s before changing the interface mode to auto-negotiation.