Chennaicisco.blogspot.com Website Review

use of extended ping and no keepalive command in routers -gns3 topolgy. what is the use of extended ping command in cisco routers.let,s we see that using this example topology in gns3.i will tell you how to i am going to setup a virtual lan 10.0.0.0 network in router r1 and 30.0.0.0 network in router r2 by using 'no keepalive' command for the interface fastethernet.keep alive command will check the device that connected to interfaces every 10 seconds.if the device is in down state then router interface line protocol will goes to down state.if we use 'no keepalive' command it wont check for the status of device, step 2:configure ip address to interfaces in routers like i have given in a topology. first i am going to give the command 'show ip interface brief' in privileged mode to check what r1#show ip interface brief interface                  ip-address      ok? method.  administratively down down virtual-access1            unas*igned      yes unset  up  . interface                  ip-address      ok? method status                protocol virtual-access1            unas*igned      yes unset  up                    up interface will be come up and always kept up until we re-enable 'keepalive' on that interface. now,give 'show ip interface brief' command in privileged mode to check status of the interafaces r1#show ip interface brief interface                  ip-address      ok? method.  administratively down down virtual-access1            unas*igned      yes unset  up  . now,we have a 10.0.0.0 network in router r1 connected to it.same for the 30.0.0.0 network in r2.. r1(config-if)#encapsulation ppp r1(config-if)#clock rate 64000. r2(config-if)#encapsulation ppp r2(config-if)#clock rate 64000. step 3:now,enable dynamic routing protocol rip on r1 and r2. step 4:now i am going to ping 30.0.0.1 from router r1.before we ping give this command 'debug ip packet' in privileged mode on r1.