TP-LINK TL-MR3020 need DUC or not i connect only hikvision dvr

SOURCE: Must be reset router tl-mr3420

1.You will possibly need to configure the router for what is called "port Triggering"
2. from what I read is that there is no IP via the Hikvision external there fore requiring a new IP each time for connectivity.
Instruction set from the manual states:
To add a new rule, follow the steps below.
1. Click the Add New... button, the next screen will pop-up as shown in Figure 4-40.
2. Select a common application from the Common Applications drop-down list, then the
Trigger Port field and the Incoming Ports field will be automatically filled. If the Common
Applications do not have the application you need, enter the Trigger Port and the
Incoming Ports manually.
3. Select the protocol used for Trigger Port from the Trigger Protocol drop-down list, either
TCP, UDP, or All.
4. Select the protocol used for Incoming Ports from the Incoming Protocol drop-down list,
either TCP or UDP, or All.
5. Select Enable in Status field.
6. Click the Save button to save the new rule.
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check the "Local management" in the router
you must allow certain devices to obtain an IP via either MAC address or IP address.

SOURCE: After using TP-Link TL-R480t+ Router Video streaming from internet at sites such as youtube does not work at all

Hi ,This is Clare Su from TP-LINK support technical force.To you issue,I have the following recommendations:1. try to use only one line to connect to the internet,and see if you can watch the video on youtube2.if you can see the video with one line connected to the internet.Then,you can get another internet line with the router.And you can try to set the rule to the website: youtube, let the flow from youtube come in and out just from one wan port.if you can't solve the issue with my recommendation,you can email me. I will help youas soon as possible.My email is:clare.su from tp-link.com