Yes, they are directly connected.
To be able to set this correctly you'll need to set the same subnet on both sides:
router-A#
int s0/0
ip address 150.x.x.x.255.255.252
router-B#
int s0/0
ip address 150.x.x.x.255.255.252
you dont need to configure routing protocols.
as you'd have something like the followin in both routers:
R1#sir
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
150.50.0.0/30 is subnetted, 3 subnets
C 150.50.10.0 is directly connected, serial0
So to ping the other side it will just send an ARP request and get the MAC for the other router.
Ping will go directly!
Vlad
