If a router wants you to know something, it wants you to know right now!
Let’s look what will happen if you are entering a long command and the device wants you to be informed about a link’s failure:
[Huawei-acl-adv-3000]rule 10 permit ip vpn-instance vpn_labnario source 220.127.116.11 0.0.0.255 destination 18.104.22.168 Jan 15 2013 11:04:18-08:00 Huawei %%01PHY/1/PHY(l): GigabitEthernet0/0/0: change status to down Jan 15 2013 11:04:18-08:00 Huawei %%01IFNET/4/LINK_STATE(l):The line protocol IP on the interface GigabitEthernet0/0/0 has entered the DOWN state. ^ Error:Incomplete command found at '^' position.
When you click ‘Enter’ you will have to write the command once again. It is frustrating for all network administrators.
Unfortunately we cannot change it, like on Cisco’s devices, by ‘logging synchronous‘ command.