Zyxel USG 200 Bandwith limitation

Monald
Monald Posts: 7  Freshman Member
First Comment Friend Collector
in Security

Hi, I recently switched to a better internet connection, from 20Mb down/3Mb up to a 400Mb/150Mb. My problem is that if I use the ISP router bypassing my Zyxel USG 200 I get in my speedtests 400Mb/150Mb, but if i try using my Zyxel as normal I get 110Mb/15Mb. Does someone know if there is some sort of limitation? Or anyone had ever had the same problem?

Thanks

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  • Zyxel_Judy
    Zyxel_Judy Posts: 1,631  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula

    Hi @Monald ,

    Could you share with us details about your two scenarios: "the ISP router bypassing my Zyxel USG 200" and "using my Zyxel as normal" regarding:

    • The topology - how did you connect the devices?
    • The test method - which tools did you use, how did you conduct the tests, and could you share screenshots of the test results?
    • Have you enabled any Security services on the USG FLEX 200?

    Judy

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  • Monald
    Monald Posts: 7  Freshman Member
    First Comment Friend Collector
    edited December 20

    Hi,

    Scenario 1: LAN1 of my ISP router is connected with WAN1 of my Zyxel and port 3 (LAN2) of my Zyxel is connected to a switch.

    Scenario 2: LAN1 of my ISP router is connected directly to the switch without using the Zyxel.

    I've used ookla speedtest for my tests. At the Moment I don't have any screenshot, but I remember the results:

    In scenario 1: I have 110Mb down and 17/20Mb up

    In scenario 2: I have 350/400Mb down / 100/150Mb up.

    I didn't have set any security services (as I know), because I didn't set up the first time, but I've searched everywhere. The last thing that I can try is formatting it.

    Thanks

  • Monald
    Monald Posts: 7  Freshman Member
    First Comment Friend Collector
    https://community.zyxel.com/en/discussion/comment/72957#Comment_72957

    Hi @Zyxel_Judy

    Sorry for the double ping. Can you please tell me where could be those Security services? Because I searched everywhere but maybe I didn't notice it. Thansk

  • PeterUK
    PeterUK Posts: 3,459  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary

    This is the old USG 200 not FLEX 200? so likely hardware limit but its odd your upload speed is slow…

    Can you try double NAT with your ISP router.

  • Monald
    Monald Posts: 7  Freshman Member
    First Comment Friend Collector
    https://community.zyxel.com/en/discussion/comment/72978#Comment_72978

    Hi @PeterUK

    I've checked and the port says 1000MB full duplex. I believed that the port was 100MB but it's says that is 1G. But yes it's the old USG 200

  • Monald
    Monald Posts: 7  Freshman Member
    First Comment Friend Collector

    Sorry,but what do you mean with "Double NAT with your ISP router"?

  • Xydocq
    Xydocq Posts: 22  Freshman Member
    First Comment First Answer Friend Collector
    https://community.zyxel.com/en/discussion/comment/72980#Comment_72980

    Hi @Monald

    Your Zywall USG200 has 1Gbit/s ports on the WAN side. SPI Firewall Throughput is 250Mbit/s and UTM Throughput is 40Mbit/s.

    In order to make use of the full speed you would need at least a new USG Flex 100 or a USG Flex 200.

    I use a USG Flex 200 on a 2.5Gbit/s connection and I get a max download of 850 t0 900Mbit/s. I wasn't asked if I wanted the 2.5Gbit/s I was updated from a 600Mbit/s plan. But their lower plan doesn't offer what I am looking for. So I am stuck, as you are, with a connection faster then what my appliance can handle. My Lan is 1Gbit/s so I don't have the need to upgrade the USG Flex 200.

  • PeterUK
    PeterUK Posts: 3,459  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary
    edited December 20
    https://community.zyxel.com/en/discussion/comment/72982#Comment_72982

    Maybe your doing it without knowing? if you USG WAN interfaces gets a IP 192.168.xxx.xxx then your Double NAT, if you get a IP on the interface like shown on whats my IP then your not Double NAT which is best. Just wanted to see if Double NAT made a difference which it shouldn't.

    But as your on old USG 200 thats likely the reason why you can't go faster even with 1Gb ports

  • Monald
    Monald Posts: 7  Freshman Member
    First Comment Friend Collector
    https://community.zyxel.com/en/discussion/comment/72992#Comment_72992

    Hi,

    Yes I get the IP from my ISP router. I've also put the ISP router in DMZ state. So I'll need to buy a newer router. What do you suggets?

  • PeterUK
    PeterUK Posts: 3,459  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary

    I would think the FLEX100/200 H would do

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