Dear admin,

One day I found that the protocol status of Eth-trunk is up and there is traffic through the interface; but the protocol status of member interfaces is down. I tried several times to find out the root cause but I failed.

After that I visited to Huawei support website & they solved my problem easily.

Thanks to Huawei team

 

Huawei Suggestion & Solution:

According to Huawei VRP realization, there are servral rules to define the protocol status

of Ethernet interface(including physical FE/GE/xGE, subinterface, Eth-trunk):

1) If physical status is down, the protocol status is also down;

2) For L2 interface, If physical status is up, the protocol status is up;

3) For L3 interface, If physical status is up, only when it is configed IP address,

the protocol status is up; otherwise, it is down;

4) Specially,  If the interface is a L3 Eth-trunk membter, the protocol status is up when its physical status is

up(no matter that it is configed IP address or not).

Another reason is that when we config "portswitch" on an Eth-trunk interface, its members are also L3 interface.

In this case, customer configs "portswitch" on Eth-Trunk 1 and doesnt config it on its members; according to rule 3 above,

the protocol status of members should be up.   

 

Root Cause:

1) If physical status is down, the protocol status is also down;

2) For L2 interface, If physical status is up, the protocol status is up;

3) For L3 interface, If physical status is up, only when it is configed IP address,

the protocol status is up; otherwise, it is down

Great success, carry on....

very good success....

very good  & keep it up