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mkultr4's avatar
mkultr4
Tuning in
25 days ago

Ethernet Switch with HUB 5?

Hi

I am using Hub 5 in default router mode with the 2.5gb port connected to Devolo power-line adapter which sends ethernet and WiFi to 3 other rooms in house. The Hub 5 also has other devices (TV, PC, and TIVO) connected directly into its 1gb Ethernet ports. The power-line connection works pretty well in 2 rooms but my sons room gets pretty low speed compared to the other 2 rooms that are using the power-line adapters. I assume this is due to the length of electrical cable run to sons room and also may be on a different electrical circuit.

I have been considering running Ethernet cable from sons room up into loft and down to the location of the virgin hub5 but due to the number of current cable connections into the hub 5, i was thinking i would need an Ethernet switch attached to the hub 5. 

Would it be possible to have an Ethernet switch connected to one of the ports in the hub 5, while still having other devices (PC, TV, and the Devolo power-line adapter) directly connected to the other ports in the hub 5?

if this can be done, would a managed or unmanaged switch be better? Could the Ethernet switch (if its got multi 2.5gb ports) be connected to the 2.5GB port on the Hub 5.

Any recommendations for a switch that could handle the above requirement? (if its even possible)

 

thanks in advance for any help.

 

 

 

8 Replies

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  • legacy1's avatar
    legacy1
    Alessandro Volta

    the Hubs don't like having more then one MAC per port but you can try and if not get a router use hub in modem mode

    here are two switches with:   

    IEEE 802.3az Energy Efficient 
    Ethernet (deactivated by default)

    MG-105 5-port 2.5GbE Switch | Zyxel Networks | Zyxel Store

    XMG100 Series - 5/8-Port 2.5G Unmanaged Switch with 10G Uplink - Overview | Zyxel Networks | Zyxel Store

    suggested cable

    Digitus LAN Cable Cat 6-3m - RJ45 Network Cable - S/FTP Shielded - Compatible with Cat6A & Cat7 - Grey : Amazon.co.uk: Musical Instruments & DJ

    • Tudor's avatar
      Tudor
      Very Insightful Person

      "the Hubs don't like having more then one MAC per port" this cannot apply to the 2.5 port otherwise the switch would not work. In any case a managed switch overcome the problem as it only gives one MAC address to its host.

      • legacy1's avatar
        legacy1
        Alessandro Volta

        Not with the hub it don't the way your thinking a managed switch that is L3 where you can make the switch have a default gateway such that if a router had 192.168.0.1/24 and a L3 switch had IP Interface 192.168.0.2/24 you have the router tell clients to use gateway 192.168.0.2 to the switch of course the router being on the same subnet will ARP for the client to know its is MAC to send out.

        but what if you had a VLAN like 192.168.66.1/24 on the switch with default gateway 192.168.0.1 to the router? if the router have no VLAN for 192.168.66.0/24 then you need a DHCP server on that VLAN not by router so clients ARP to 192.168.66.1 as the gateway then the switch ARP to the default gateway 192.168.0.1 then router send out the packet but how does a 192.168.66.0/24 packet make it back to the client? by static route to say 192.168.66.0/24 next hop 192.168.0.2 of the switch which the hub does not support.

        You can also do it like VLAN 192.168.66.1/24 on the switch with default gateway 192.168.0.1 to the router? if the router have has VLAN 192.168.66.2/24 for DHCP if tag so clients ARP to 192.168.66.1 as the gateway then the switch ARP to the default gateway 192.168.0.1 then router send out the packet the the return uses the VLAN to ARP for the clients to send the traffic.

        Truly ones that learn by Wireshark vs one that learn thinking thats how it works.

  • Client62's avatar
    Client62
    Alessandro Volta

    A low cost unmanaged say 8 Port Gigabit Switch will be fine on the 3x Hub 5 Gigabit ports. 

    The Hub 5's 2.5 Gigabit port is more complex as it expects to have EEE aka Energy Efficient Ethernet disabled, this mean a managed 2.5 Gigabit network switch is required.

    Folks have reported an unmanaged 2.5 Gigabit network switch failed to work as expected via the Hub 5's 2.5 Gigabit port.

  • Adduxi's avatar
    Adduxi
    Very Insightful Person

    I believe one of the posters here have used this switch on the 2.5Gb port as it’s managed and can disable EEE.

    https://amzn.eu/d/eWudP6d