I am the current PhD student and my interested topics are:

1. Networking portocols such as OSPF,EIGRP etc
2. Load balancing of two or more links provided by different ISPs terminated on the same router at different locations
3. please advise any other topics. (up)

Other topics for what?

Are you actually a phd student?

If you are a PhD student and short of ideas, you're best speaking to your supervisor as I doubt anyone on here has sufficient knowledge of your area. If you're not a PhD student, you need to do a literature review, identify gaps in knowledge and formulate your own ideas for research projects. This will be excellent practice for the hard work required in the PhD itself.

Well he/she says they are "the current phd student" but then says "interested topics". Does that mean this is what they are doing their phd on? Very strange.