How we can configure a uplink backup in a MA5800-X17 OLT with two H901MPLB card controller

The scenario is the following:

OLT config:<?xml:namespace prefix = "o" />

[vlan-config] 
< vlan-config>

vlan 100 smart

vlan 200 smart

vlan 300 smart

port vlan 100 0/10 0

port vlan 100 0/9 0

port vlan 200 0/10 0

port vlan 200 0/9 0

port vlan 300 0/10 0

port vlan 300 0/9 0

port vlan 400 0/10 0

port vlan 400 0/9 0

[bbs-config]

<bbs-config>

link-aggregation 0/10 0 egress-ingress workmode lacp-static

link-aggregation add-member 0/10/0 0/10 1

link-aggregation 0/9 0 egress-ingress workmode lacp-static

link-aggregation add-member 0/9/0 0/9 1

[lacp-config]

<lacp-config>

link-aggregation lacp-key 0/10/0 1

link-aggregation lacp-key 0/9/0 2

The traffic is out by the active controller port (0/9 0) when we do a “System switch-over” the traffic still trought out by the same port but the active controller is the 0/10 card.

Other check that we did was simulated a fiber cut out int the active port (0/9 0) the backup port (0/10) did not work, even a switch-over controller cad again.

1.Your configuration seems to not be in according with your
requirements:

link-aggregation 0/10 0 egress-ingress workmode lacp-static

link-aggregation add-member 0/9/0 0/10 0

But usually, the traffic will be transferred on both of the two ports.
If you want to make only one link to work, the following command can be used:

such as:

link-aggregation max-link-number 0/9/0 1

And please make sure the peer should be also configured with LACP, as LACP is used here.

2.The protect-group can be considered also in another way: