Can I configure one VCN500 network port as the management port and the other one as the service port?

AR series routers allow multiple ports to mirror traffic to one observing port. There is no limit to the number of ports. The traffic mirrored to the observing port, however, cannot exceed the maximum forwarding traffic of the observing port, namely, maximum bandwidth of the observing port.

AR router can configure NAT static and NAT port to achieve one to one mapping. For example: NAT server TCP global 1.1.1.2 21 inside 10.3.0.30 21 server.

Yes. To improve reliability, you are advised to add at least two physical member ports to each stack port.

Changes to the PRBS testing status on one port do not affect services on other ports. The PRBS testing function, however, is recommended only during network deployment in which services are not provisioned.

iMana supports the NC-SI (Network Controller Sideband Interface) feature, that is, a physical network port can be used as both a management network port and a service network port. This feature allows users to access iMana through a service network port.
You can enable or disable the NC-SI features on the iMana or BIOS interface. By default, NC-SI is disabled.

For details about the NC-SI features, see http://support.huawei.com/ehedex/hdx.do?docid=DOC1000010818&lang=en&idPath=7919749|9856522|21782478|21782482|9768163&clientWidth=1520&browseTime=1494379275224.

For details about the NC-SI configuration, see http://support.huawei.com/ehedex/hdx.do?docid=DOC1000010818&lang=en&idPath=7919749|9856522|21782478|21782482|9768163&clientWidth=1520&browseTime=1494379275224.