networking - Can i join one server with multiple ethernet wires to switches

07
2014-07
  • user1721949

    I saw one video where the user has one 100mb switch and other Giagbit switch.

    Then he has his all servers first network card connected to 100mb switch and second to the Gigabit switch

    he says that with normal switch the server will communicate to inetrnet and with second for the faster LAN data transfer

    I could not understand How will the server know which interface to use for LAN and which for internet

    • Answers
  • bjanssen

    Each interface is connected to different networks, i. e. the 100Mbit NIC is configured for the network 192.168.0.0/24 and the GBit Nic is configured for 192.168.1.0/24. Now the machine knows that packages going to any of the addresses from the 192.168.1.0/24 network must be sent through the GBit interface and packages going to any of the addresses from the 192.168.0.0/24 network must go through the 100MBit interface.

    Besides this the server has a default gateway, which is an IP address on one (and only one) of the configured networks, where the server will send any packages he doesn't know what to do with, e. g. a package for IP 8.8.8.8 (this is one of Google's nameservers.) In our scenario this is on no network the server knows about, including any static routes, so he sends it to his default gateway. The default gateway knows what to do with this package and if not it will send the package to its default gateway and so on. Sooner or later the package will cross the boundary from you LAN to the WAN of your ISP. The ISP in turn will route the package to 8.8.8.8 and tell 8.8.8.8 where to send any response.

    For details read a little bit more. This is a good introduction to practical networking: http://aboutdebian.com/network.htm but you should also read up on the OSI layers and general computer networks. This Wikipedia article, esp. chapter 7, is a good starting point: https://en.wikipedia.org/wiki/Computer_network


    • Related Question

    networking - Gigabit Ethernet wiring
  • ace

    I currently have a wired 100 mbps network in my house. The wiring runs around in every room. I was thinking of upgrading to a gigabit network, since most of my comouters and router have gigabit ports.

    So my question is, do i need to change the wiring to achieve gigabit connections or is it just a matter of having gigabit ports on the devices ?


    • Related Answers
  • afrazier

    If you have Cat 5e wiring, you won't need to upgrade your wiring. Most installations done in the past 5 years should be ok but you'll have to examine or test your cable to know for sure.

  • joeqwerty

    If you're running 100BASE-TX in your house then you have at least Cat5 cable, which is perfectly sufficient for 1000BASE-T.

  • Blackbeagle

    Depends on the wire you used and the connectors and how clean your wiring is. Gigabit most of the time uses all wire pairs - so if you wired correctly and wired all the pairs instead of just the 1-2, 3-6 pairs as some do then check the wire specs - Cat 5e or Cat 6. Next is the connectors - did you wire crimp carefully? Cat 5 100base can be a little messy, but the technical spec for Gig Cat 6 say that you can't untwist more than a quarter inch and that you must maintain the jacket and not seperate the pairs as much as possible. The jacks should be Cat6 rated and the patch cables as well.