North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: CIDR on 3Com Netbuilder
Well, I used to have OSPF running on a couple of NetBuilders, and my biggest complaint was that they didn't support subnet-zero routes. I had a bunch of Portmasters advertising routes that the NBs couldn't understand. Other than that, it handled CIDR fine. Brian On Thu, 30 Jul 1998, Martin, Christian wrote: > All, > > Anyone know how to configure a 3Com NetBuilder to support classless > routing? Here is the scenario. I have a class B that is being split up > into 24s and 26s. All are being statically routed over the respective > WAN interfaces to the customer prem. Most default back to our WAN > interfaces (some downstream BGP peers, but not in this scenario). > Customer A has a 3Com Netbuilder, with an LAN IP of x.x.200.1 /24. > Customer B has a Cisco 2501 with a LAN IP of x.x.23.1 /24. This > customer is configured for classless routing using the 'ip classless' > IOS global command. All customers can see into this network (cust B), > even within the same x.x classfull class B space. But no one in the > classfull x.x can see into customer A's network. Actually, their > traffic gets there, but the return traffic never leaves, because the > NetBuilder is looking at the first 3 bits and ignoring it, thinking that > it is local. > > 3Com thinks that there needs to be static routes in place. I think that > this is ridiculous, and that CIDR support is necessary in today's > Internet. It would entail me having to ask a customer to add over 25 > static routes for networks that the default rtr (me) knows about. Does > anyone know how to do this without having a CIDR-aware routing protocol > like OSPF running? I have had three 3Com guys on the this ticket for > over a week, with no resolution. 3Com employees can redeem their > company by supplying a working solution...Anyone? > > Regards, > -Chris >
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