you don't need any static route on R3 to reach 188.8.131.52 as this IP address is on the same subnet.
If you are using a RoAS design then R2 should be a L2 switch only so disable ip routing on R2.
on R3 you must also be in the same VLAN as R1 f0/0.300 subinterface as you are in the same subnet so just make f1/2on R2 an access port in VLAN 300. For R3 to ping f0/0.200 then use a static route on R3 pointing towards R1 f0/0.300 IP address.
yes,you're correct that STP on R2 would block one of these links.But you also couldn't have the second link on R3 in the same subnet(every interface on a router must be in its own subnet) so unless you were doing a L3 port-channel between R2 and R3 which you won't as R2 is now a L2 switch then this second link will have no purpose.
in that case you would have 2 subnets on R3 and from a /24 you can get 2 /25s but if R2 is still a L2 switch it means you either have 2 access links going to R3 each in a different VLAN and going to each routed interface on R3 which are in different subnets or you use a trunk on R2 for these 2 VLANs and on R3 you have 2 subinterfaces each in a different subnet and VLAN.if you have 2 access links in 2 VLANs then there won't be no blocking( I answered incorrectly about this in my latest reply) as they are on 2 different STP instances.
You'll also need the same /25s on a subinterface on R1 for intervlan routing.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.