[PLUG] Testing Wired Network Connectivity
Mike C.
mconnors1 at gmail.com
Tue Dec 4 23:17:28 UTC 2012
> Routers which provide connectivity between ip subnets
> > don't pass broadcasts.
>
> Although, they can.
>
> Russell Johnson
> russ at dimstar.net
>
>
> Routers don't pass OSI model layer 2 broadcast domains because a broadcast
> storm on 1 broadcast domain (LAN) could affect many other networks Most
> modern day switch/routers do support DHCP relay configuration and support
> VLANs. The original broadcast packets don't pass through the router, The
> router actually forwards unicast packets to the DHCP server.
> A router that is configurable to "forward broadcast" packets doesn't
> actually forward broadcast packets. It' brokers/proxies the broadcast and
> sends out a unicast packet. A broadcast by definition is when packets are
> sent indiscriminately out all ports of a device. A router would never do
> this.
It would break convention with the OSI model, RFCs and make the baby Jesus
> weep for eternity...
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