*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 = 8/56/132 ms *R2#sh ip route* Default gateway is not set
Host Gateway Last Use Total Uses Interface ICMP redirect cache is empty *R2#sh ip int brief* Interface IP-Address OK? Method Status Protocol Serial0/0 unassigned YES unset administratively down down Serial0/1 unassigned YES unset administratively down down Serial0/2 unassigned YES manual administratively down down Serial0/3 172.32.1.2 YES manual up up R2# On Tue, Sep 1, 2009 at 7:59 PM, Bryan Bartik <[email protected]> wrote: > Taqdir > > Give us a "sho ip int brief" on R2... > > On Tue, Sep 1, 2009 at 7:00 AM, Taqdir Singh <[email protected]>wrote: > >> Please note , I am sitting on* router R2* and I am pinging from there >> to loopback 172.16.10.1 which on router R0. >> >> *On router R2 - I have disabled ip routing*. then how come I am able to >> ping loopback on router R0* even if there is no route in R2*? >> >> On Tue, Sep 1, 2009 at 6:15 PM, cyrus riobah <[email protected]>wrote: >> >>> 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 >>> > >>> >> >> >> >> -- >> 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 >> >> > > > -- > Bryan Bartik > CCIE #23707 (R&S), CCNP > Sr. Support Engineer - IPexpert, Inc. > URL: http://www.IPexpert.com <http://www.ipexpert.com/> > -- 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
