And lets say that im only going to have 3 systems on this vlan. Ports on all 3 switches will be assigned to vlan 10 lets say ports 1 and 2 on all three switches. The rub being that (and I'll to to simplify all this buy just using vlan 10 as an example) I don't want to wast IP addresses on the subinterfaces if i can avoid it. I'm literally trying to make a mess of the environment so that I can REALLY practice subnet masking and at the same time, try to learn something about designing networks in the first place. I'd prefer to have varying number of ports be members of the vlans and ill be using VLSM for varying scope sizes). Each two ports on the switch will belong to one vlan (just to make things easy. Each phsical interface will be connected to a 2960 switch. Imagine having 12 vlans, requiring 12 subinterfaces and each physical interface on the router (i was actually just using the 2901 for testing, in practice ill be using the 2911) which is 3. I didn't want to go into too many details about the grand plan, becuase it's illrelavant.but here goes.
I could clear this all up with one command just assigning the gw ip to the subinterface.but I don't want the subinterface to have an IP. The DHCP service is running on the router. And constructing a diagram would be very time consuming. S* 0.0.0.0/0 is directly connected, Null0 Gateway of last resort is 0.0.0.0 to network 0.0.0.0 * - candidate default, U - per-user static route, o - ODR I - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2Į1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP This is my route table:Ĭodes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGPĭ - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area The point is, I'm seeing if I can pull off not having to assign an ip to each subinterface (there's a means to an end for a bigger project if I can get this to work it involves VLSM, a very large number of subnets an VLANs spanning multiple router interfaces, granted, its still only costing me one IP per subnet per interface(3))Įverything is accepted and the IOS firmware actually supports static routes to VLans.that's the actual issue during the DHCP lease process it reaches the sub int, the sub int tries to send it off to the helper address, but it can't find a route to it.
The 2960 is conf'd with interface FastEthernet0/1
I'll give you guys the TL DR version an post full configs if requested. So.I'm studying for my CCENT and I'm playing around with random configurations for practice.
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