Creating a 2 host Vlan & routing

Question

Hello,
I have a 4503 Layer3 switch that acts as the VTP Server for my network. If I enter
config t
interface vlan 99
ip address 10.10.0.252 255.255.255.252
no shut
That would create Vlan 99 which would consist of a network with two valid host addresses at 10.10.0.253 and .254, right? All broadcasts by those two IP's would be limited to those two IP's, right?
And as far as the 4503 is concerned. Is there any way to block Vlan99 from routing to all other Vlans except for Vlan1 and Vlan22?
(i want 99 to comunicate with 1 and 22 only. but 1 and 22 to be able to communicate with ALL vlans)
Is this at all possible?
Thanx for any help

Answer 1

You are wrong with the first line. when using a .252 mask, ip x.x.x.252 is a network address which cannot be assigned to an interface. If you have already tried this, you must have noticed that the 4503 refused the ip address, right? If you have a requirement for two hosts to communicate in this vlan, assign a .248 subnet.
The second part of your question can be answered positively: Yes, this is possible.
configure an ACL for vl99 that contains the ip sources in vl99 and the ip destinations for vl1 and vl22, then assign this as:
int vl 99
access-group XXX in
the access list should look like:
access-list XXX permit 10.10.0.248 0.0.0.7 (ip vl1) 0.0.0.255
access-list XXX permit 10.10.0.248 0.0.0.7 (ip vl22) 0.0.0.255
Regards,
Leo