Ascend Archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: (ASCEND) Low bit/high bit subnets
It'll work just fine on the Ascends.
Just try to avoid RIP-v1 on your whole network. Use either only static
routes, or RIP-v2 or better, perhaps + static routes.
Even if you must use RIP-v1 for some reason, it'll still work.
At 04:46 PM 8/11/97 +0200, you wrote:
>On Mon, Aug 11, 1997 at 09:51:46AM -0400, Phillip Vandry wrote:
>> > I was wondering if the Ascend products will properly
>> > route 'illegal' subnets such as the 0-bit and the high-bit
>> > subnets. For example, if I have /27 network, can I use:
>> >
>> > 208.133.27.0/27 (for IP's 208.133.27.1 - 208.133.27.31)
>> >
>> > or
>> >
>> > 208.133.27.224/27 (for IP's 208.133.27.225 - 208.133.27.254)?
>>
>> I've been told by Ascend and by Cisco to be afraid to do that with their
>> respective products, it violates specs all over the place, etc..
>
>You probably hit some old natives who are in the biz since '85 ;-)
>
>> I beleieve that's a load of crap. There's nothing wrong with doing that.
>> The only thing that stops you is an obsoleted RFC.
>
>More clearly, the only situation where the limitation makes any sense
>is the use of a classful routing protocol, where a classful router can't
>make a difference between the net base of the /24 and f.i. the subnet zero
>of a /27 as well as between the broadcast of the /24 and the broadcast of
>the all ones subnet of the /27. In most cases this isn't a
>problem either, the most problematic thing is that vendors thought they
>must prevent users from configuring these nets and thus made them unusable
>which spread like most other deseases.
>
>FMI, see the excellent http://www.3com.com/nsc/501302.html
++ Ascend Users Mailing List ++
To unsubscribe: send unsubscribe to ascend-users-request@bungi.com
To get FAQ'd: <http://www.nealis.net/ascend/faq>
References: