Its never possible to be able to ping over a serial link (in fact a network on different subnets) without the routing involved.
With the output of sh ip route on your R0, the statement ""S* 0.0.0.0/0 is directly connected, Serial0/0"" indicates that this is s static route readily configured to R0 hence makes it to ping anything connected to R0. Possibly, check all your router for a static route, S* indicates its existence. Regards Cyrus CCNP,CCDA,ARFE,WAAS,AWLANFE,XF On 9/1/09, Taqdir Singh <[email protected]> wrote: > Please see my attached diagram. > Just curious to know , how ping is successfull sitting on router R2 to > destination 172.16.10.1 though on R2 I have disabled ip routing and even > there is no default-gateway configured. > > Other curious thing I want to know - If i configure any loopback interface > on router R2.. and then try to ping 172.16.10.1 it is unsuccessfull. > > Could any1 please help whats going on here on router R2 ? > > R0#sh ip ro > 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, su - IS-IS summary, 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 0.0.0.0 to network 0.0.0.0 > > 172.16.0.0/24 is subnetted, 1 subnets > C 172.16.10.0 is directly connected, Loopback0 > 10.0.0.0/24 is subnetted, 1 subnets > C 10.1.1.0 is directly connected, Serial0/0 > S* 0.0.0.0/0 is directly connected, Serial0/0 > R0#echo reply rcvd, src 172.16.10.1, dst 172.32. > R0# > ================ > > R1#sh ip ro > 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, su - IS-IS summary, 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 > > 172.16.0.0/24 is subnetted, 1 subnets > S 172.16.10.0 is directly connected, Serial0/1 > 172.32.0.0/24 is subnetted, 1 subnets > C 172.32.1.0 is directly connected, Serial0/2 > 10.0.0.0/24 is subnetted, 1 subnets > C 10.1.1.0 is directly connected, Serial0/1 > R1# > ===================== > > R2#sh ip ro > Default gateway is not set > > Host Gateway Last Use Total Uses Interface > ICMP redirect cache is empty > R2#ping 172.16.10.1 > > Type escape sequence to abort. > Sending 5, 100-byte ICMP Echos to 172.16.10.1, timeout is 2 seconds: > !!!!! > Success rate is 100 percent (5/5), round-trip min/avg/max = 12/48/136 ms > R2# > > > -- > Taqdir Singh > CCNP- (R), CCNA > 09911709496 > > Do today what others won't so you can live tomorrow as others can't > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
