Re: COM21 is killing me with ARP

[Patrick Colbeck <pat.colbeck@bashq.org>]

Hmm point taken. I hadn't actually thought about the router actually
running out of arp cache space. 

>>>>> "Bryan" == Bryan Andersen <bryan@visi.com> writes:
    Bryan> Actually it does matter.  When Joe user turns off their box
    Bryan> it nolonger can answer requests for it's ethernet adderess.
    Bryan> This means a bunch of requests for it's arp address.  So
    Bryan> when someone scans the network you get bombarded by arp
    Bryan> requests, and the caches naturally gets trashed durring
    Bryan> this.  If you know a provider does this you can realy hose
    Bryan> up their network by bombarding them with random addresses
    Bryan> in their network space.  To keep from having this trash a
    Bryan> network the router really needs to have enough cache
    Bryan> entries to store all hosts on the network.  Many routers
    Bryan> just can't handle that for a class B network.  They really
    Bryan> should break their network up into class Cs.

Pat