Test interface connectivity for router OSPF Configuration

Basic configuration of router OSPF-test interface connectivity

Interface connectivity is the most important step. If this step is not guaranteed, the following operations cannot be performed.

In the privileged mode of each vro, enter the following command to view the interface status:

 
 

  
  
R1#sh ip interface brief  
  
  
 
  
  
Interface                  IP-Address       OK?  Method Status                Protocol  
  
  
 
  
  
Serial1/0                  199.99.1.1        YES  manual  up                      up  
  
  
 
  
  
Loopback0                  1.1.1.1         YES  manual  up                      up  
  
  
 
  
  
R2# sh ip interface brief  
  
  
 
  
  
Interface                  IP-Address      OK? Method Status                Protocol  
  
  
 
  
  
Serial1/0                  199.99.1.2      YES manual     up                    up  
  
  
 
  
  
Serial1/1                  199.99.2.1      YES manual     up                    up  
  
  
 
  
  
Loopback0                  2.2.2.2         YES manual   up                    up  
  
  
 
  
  
R3#sh ip interface brief  
  
  
 
  
  
Interface                  IP-Address      OK? Method Status                Protocol  
  
  
 
  
  
Serial1/1                  199.99.2.2      YES manual     up                    up  
  
  
 
  
  
Loopback0                  3.3.3.3         YES manual   up                    up 
 
 

Note: The gray part must be "UP ".

Enter the following commands in the privileged mode of the intermediate router R2:

R2 # ping 199.99.1.1 use the ping command to test the connectivity of the direct connection interface

 
 

  
  
Type escape sequence to abort.  
  
  
 
  
  
Sending 5, 100-byte ICMP Echos to 199.99.1.1, timeout is 2 seconds:  
  
  
 
  
  
!!!!!  
  
  
 
  
  
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/28/84 ms  
  
  
 
  
  
R2#ping 199.99.2.2  
  
  
 
  
  
Type escape sequence to abort.  
  
  
 
  
  
Sending 5, 100-byte ICMP Echos to 199.99.2.2, timeout is 2 seconds:  
  
  
 
  
  
!!!!!  
  
  
 
  
  
Success rate is 100 percent (5/5), round-trip min/avg/max = 12/26/60 ms 
 
 

You can also enter the following command in the intermediate router R2 configuration mode: the new version of IOS12.4 command)

 
 

  
  
R2(config)#do ping 199.99.1.1  
  
  
 
  
  
Type escape sequence to abort.  
  
  
 
  
  
Sending 5, 100-byte ICMP Echos to 199.99.1.1, timeout is 2 seconds:  
  
  
 
  
  
!!!!!  
  
  
 
  
  
R2(config)#do ping 199.99.2.2  
  
  
 
  
  
Sending 5, 100-byte ICMP Echos to 199.99.2.2, timeout is 2 seconds:  
  
  
 
  
  
!!!!!  
  
  
 
  
  
Success rate is 100 percent (5/5), round-trip min/avg/max = 12/26/60 ms 
 
 

"!" "." Or "U" indicates "reachable.

The connectivity configuration of the test interface in the router OSPF configuration is complete. I hope you have mastered it. Next, we will introduce step 3 of router OSPF configuration: basic configuration and connectivity test of OSPF.

1. Result Analysis of router OSPF Configuration
2. Basic description of router OSPF Configuration
3. Describes the basic interface configuration for router OSPF configuration.
4. Describes how to query the OSPF neighbor table on a router in the OSPF configuration of a router.
5. Describes the basic configuration and connectivity test of OSPF in Router OSPF configuration.
6. Describes how to query the connection status database of ospf on a Router Based on the OSPF configuration of a router.