Re: job screening question

[David Edelman <dedelman () iname com>]

On 7/7/12 1:24 AM, "Jared Mauch" <jared () puck nether net> wrote:

> Die proxy arp die. (and that's not German).
>
> I've had a job or consulting gig or two that has inadvertently had this
> as the hidden glue making things work.
>
> (wha, you can't route that subnet out an Ethernet interface without a
> next hop? It's always worked....)
>
> I fight with sysadmins to this day about the concept of a broadcast
> domain and subnet... If I hear another case of someone saying that switch
> is the "80" subnet when there are 3 co-existing /24s in that domain I may
> go crazy....
>
> I've cleaned up a lot of poor host and network management and it's
> amazing how much a difference the hardware operates without the hacks.
>
> Jared Mauch
>
> On Jul 6, 2012, at 8:51 PM, Ben Aitchison <ben () meh net nz> wrote:
>
> > Routing loops, incorrect
> > subnet masks.  (like when people stick a /24 netmask on a /27 then
> > can't reach another
> > adjacent /27)


> We had a pair of diversely located systems operate for about 18 months
> with misconfigured gateway addresses. Proxy ARP kept everything on an
> even keel until one of the systems failed and the traffic routed to the
> remaining system. I arrived on the call in time to hear the sys admins
> saying that they had exceeded the maximum number of ARP entries and were
> going to expand the table :(