Drobe :: The archives
About Drobe | Contact | RSS | Twitter | Tech docs | Downloads | BBC Micro

Reply to thread

Some points

"Each packet sent over the Internet contains the subnet prefix in the destination field as well as the destination IP"

Hm not exactly, the destination IP is send which then is divided in a network and host part by the routers. Subnetting means the routers closer to the destination have a biger (more detailed) network part in their table for the same address.

In theory you can also use the network address as a host address, but as there were computers (a long time ago) which wrongly implemented the all zero host address as broadcast instead of the all one host address there is a posibility that you are not reachable for some computers if you have the network address.

Another good thing about IPv6 is that the header has a fixed format which makes it easyer to implement routing in hardware instead of software.

Not only routers but every computer with an ethernet interface needs to have a ARP table, all packets on a ethernet are routed on the MAC address. Hosts (including routers) will only receive a packet if it is for their MAC address, only after that they will check the destination IP address if it is at the final destination or if it needs to be routed further.

 is a RISC OS UserJaco on 14/9/04 7:21PM
[ Reply | Permalink | Report ]

Please login before posting a comment. Use the form on the right to do so or create a free account.

Search the archives

Today's featured article

  • Review: A9home v. Koolu
    Clash of the tiniest
     31 comments, latest by polas on 18/10/07 6:03PM. Published: 15 Oct 2007

  • Random article

  • Select 4 will not be ready until new year
    No Christmas release as hoped by subscribers
     25 comments, latest by mavhc on 7/12/05 10:00PM. Published: 1 Dec 2005

  • Useful links

    News and media:

    Top developers:
    RISCOS LtdRISC OS OpenMW SoftwareR-CompAdvantage SixVirtualAcorn

    CJE MicrosAPDLCastlea4X-AmpleLiquid SiliconWebmonster


    RISCOS.org.ukRISCOS.orgRISCOS.infoFilebaseChris Why's Acorn/RISC OS collectionNetSurf

    Non-RISC OS:
    The RegisterThe InquirerApple InsiderBBC NewsSky NewsGoogle Newsxkcddiodesign

    © 1999-2009 The Drobe Team. Some rights reserved, click here for more information
    Powered by MiniDrobeCMS, based on J4U | Statistics
    "I must take exception to the publishing of my private email to Drobe. But then they are renowned for bad form"
    Page generated in 0.0502 seconds.