Extended Ping / Route

For a Ping /connectivity  to work :
1.Route should be in Routing Table.
2.Route should be in both source and destination table.
   Example Ping expects a reply.ICMP ECHO REPLY.
   debug command shows activity.
3.For directly connected Routers default route or static route
on the Reply end is enough.

Example:Extended Ping.

PING From Source. Router#ping

Protocol [ip]: ip

Target IP address: 192.168.1.2

Repeat count [5]:

Datagram size [100]:

Timeout in seconds [2]:

Extended commands [n]: y

Source address or interface: gigabitethernet0/1

Type of service [0]:

Set DF bit in IP header? [no]:

Validate reply data? [no]:

Data pattern [0xABCD]:

Loose, Strict, Record, Timestamp, Verbose[none]:

Sweep range of sizes [n]:

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.1.2, timeout is 2 seconds:

Packet sent with a source address of 192.168.2.1

.....

Success rate is 0 percent (0/5)

Destination debug output.

Destination is receiving the Ping Echo Request.

Extended Ping from source

IP: tableid=0, s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), routed via RIB

IP: s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), len 128, rcvd 3

IP: s=192.168.1.2 (local), d=192.168.2.1 len 128, unroutable

IP: tableid=0, s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), routed via RIB

IP: s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), len 128, rcvd 3

IP: s=192.168.1.2 (local), d=192.168.2.1 len 128, unroutable

IP: tableid=0, s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), routed via RIB

IP: s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), len 128, rcvd 3

IP: s=192.168.1.2 (local), d=192.168.2.1 len 128, unroutable

IP: tableid=0, s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), routed via RIB

IP: s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), len 128, rcvd 3

IP: s=192.168.1.2 (local), d=192.168.2.1 len 128, unroutable

Adding a default route on reply end 
Router(config)#ip route 0.0.0.0 0.0.0.0 g0/0

Results in change below.If Routers are not connected 

that a Routing protocol or multiple static/default routes required. 

IP: tableid=0, s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), routed via RIB

IP: s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), len 128, rcvd 3

IP: tableid=0, s=192.168.1.2 (local), d=192.168.2.1 (GigabitEthernet0/0), routed via RIB

IP: s=192.168.1.2 (local), d=192.168.2.1 (GigabitEthernet0/0), len 128, sending

IP: s=192.168.1.2 (local), d=192.168.2.1 (GigabitEthernet0/0), len 128, encapsulation failed

IP: tableid=0, s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), routed via RIB

IP: s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), len 128, rcvd 3

IP: tableid=0, s=192.168.1.2 (local), d=192.168.2.1 (GigabitEthernet0/0), routed via RIB

IP: s=192.168.1.2 (local), d=192.168.2.1 (GigabitEthernet0/0), len 128, sending

IP: tableid=0, s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), routed via RIB

IP: s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), len 128, rcvd 3

IP: tableid=0, s=192.168.1.2 (local), d=192.168.2.1 (GigabitEthernet0/0), routed via RIB

IP: s=192.168.1.2 (local), d=192.168.2.1 (GigabitEthernet0/0), len 128, sending

IP: tableid=0, s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), routed via RIB

IP: s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), len 128, rcvd 3

IP: tableid=0, s=192.168.1.2 (local), d=192.168.2.1 (GigabitEthernet0/0), routed via RIB

IP: s=192.168.1.2 (local), d=192.168.2.1 (GigabitEthernet0/0), len 128, sending

IP: tableid=0, s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), routed via RIB

IP: s=192.168.2.1 (GigabitEthernet0/0), d=192.168.1.2 (GigabitEthernet0/0), len 128, rcvd 3

IP: tableid=0, s=192.168.1.2 (local), d=192.168.2.1 (GigabitEthernet0/0), routed via RIB

IP: s=192.168.1.2 (local), d=192.168.2.1 (GigabitEthernet0/0), len 128, sending