Amer, take another look at your FrameRelay map on R4. When you see the problem there, take a look again and try to think why you have the OSPF communication between the two, but not the ping... :-)
[ scroll below the message for answer if you gave up ] -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: [email protected] Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Wed, Oct 20, 2010 at 18:40, Amer Mustafa <[email protected]> wrote: > Weird issue facing , OSPF neighborship is up between R4 and R2, though i > cant ping R2 from R4. below are the configuratons on the interfaces , can > anyone adivse why is that ? > > R2 : > > interface Serial0/1/0 > description Frame Relay Links > no ip address > encapsulation frame-relay > no arp frame-relay > no frame-relay inverse-arp > frame-relay lmi-type cisco > ! > interface Serial0/1/0.24 point-to-point > description Frame Relay Cloud 2 > bandwidth 64 > ip address 150.100.24.2 255.255.255.0 > frame-relay interface-dlci 204 > > R4 : > > ! > interface Serial0/0/0 > bandwidth 64 > ip address 150.100.24.4 255.255.255.0 > ip nat enable > encapsulation frame-relay > ip ospf network point-to-point > no arp frame-relay > frame-relay map ip 150.100.24.4 402 broadcast > no frame-relay inverse-arp > frame-relay lmi-type cisco > end > > ========== > on R4 : > > R4(config)#do sospfn > Neighbor ID Pri State Dead Time Address Interface > 200.0.0.2 0 FULL/ - 00:00:39 150.100.24.2 > Serial0/0/0 > > ------------- > on R4 : > > R4#ping 150.100.24.2 > Type escape sequence to abort. > Sending 5, 100-byte ICMP Echos to 150.100.24.2, timeout is 2 seconds: > ..... > Success rate is 0 percent (0/5) > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > You are mapping the IP of R4 on that map statement. However, you also enable pseudobroadcast, which means that multicast packets WILL make it through. The other end is point-to-point and it doesn't have the problem - so, OSPF exchange will be successful, but not the unicast traffic. _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
