Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!UHURA.CC.ROCHESTER.EDU!mead
From: mead@UHURA.CC.ROCHESTER.EDU (Ted Mead)
Newsgroups: comp.sys.proteon
Subject: Re: p4200 configuration question
Message-ID: <8904241156.AA21036@uhura.cc.rochester.edu>
Date: 24 Apr 89 11:56:10 GMT
References: <8904221616.AA28233@monk.proteon.com>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
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Mike,

What happens, in terms of routing updates and other broadcast traffic,
when an interface has multiple subnet address and the network is not
completely subnetted as is the case with bridge connected "subnets"?
Will the routing updates be sent, redundantly to each bridge connected
network? If the hosts were actually configured to understand subnets (3
bytes netmask), then I guess you would need the redundant routing
updates - one for each subnet. If the hosts were not subnetted and the
router interfaces was configured with a local-wire broadcast, would the
hosts have to process duplicate routing updates from each interface. In
other words, does each "virtual" address send out routing updates?

I apologize if the questions aren't completely clear. It is the result
of a lack of understanding, on my part, on how the router acts when an
interface is configured with multiple IP addresses on a non-subnetted
bridge connected network. Another thing I don't understand is why I
have to use a local wire broadcast for each of these virtual interfaces
when the hosts on the bridge connected segments are not subnetted.

In summary,
	
1) How do you configure the router when the hosts on the bridge
connected segments are not configured to understand subnets?
2) How do you configure the router when the hosts on the bridge
connecte segments are configued to understand subnets?
3) What form of the broadcast address do you use in both cases (local
or network wire)?
4) Will redundant routing updates be sent out from each interface?


Thanks,
Ted

P.S. Glad your back!