Date: Fri, 15 Nov 1996 00:00:42 +0200 (EET) From: Seppo Kallio <kallio@cc.jyu.fi> To: Petri Helenius <pete@sms.fi> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: arp info overwritten Message-ID: <Pine.NEB.3.92.961114235105.27274R-100000@silmu.cc.jyu.fi> In-Reply-To: <199611142100.XAA13454@silver.sms.fi>
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On Thu, 14 Nov 1996, Petri Helenius wrote: > Seppo Kallio writes: > > > 1. It is cisco router > > 2. netmasks are OK, but we use unclassified ip, that is mask is > > varying > > I hope you mean classless :-) Yps. Yes. What can I say ;-) > > 3. Netmasks of the two nodes: the FreeBSD and the micro are correct, they > > are 255.255.0.0 > > They highly likely are incorrect. No. 100% sure No. We have B class net. > > 4. There is some nodes with some other masks between > > 255.255.0.0 - 255.255.255.0 > > > Which makes this problem. The issue here is that you have > misunderstood the concept of 'variable length subnets'. It means that > a subnet of an address (for example a B-class address) can have > different length prefixes, but *NOT* the same subnet. This means that > if you have > 155.155.3.0 masked with 255.255.255.0 > you CAN NOT have > 155.155.3.16 masked with 225.255.255.240 > NOR > 155.155.0.0 masked with 255.255.0.0 Maybe I have missunderstood. As I say I am not network expert and I am not managing the Net, just the FreeBSD nodes. I think this classless net is just what you describe, we have it, masks vary etc. This is not one guy invention here. We do networking here with Funet organization. And net people do things after talking first with Funet's people. > > I think proxy arping is in use. > > > Which in some cases saves you, but causes other side-effects for > misconfigured machines. They are not misconfigured. Mask is 255.255.0.0 and it is correct so I am told. Seppo
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