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
<<attachment: routing problem.jpg>>
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
