Please find attached configurations + diagram Just again my question is
How I am able to ping 172.16.10.1 from R2 where there is no route + even no default gateway configured ? I am really curious to know. On Tue, Sep 1, 2009 at 8:46 PM, Mashburn, Vince <[email protected]>wrote: > Send us the configs of you R0 please. > > > > Thanks, > > Vince Mashburn > > > > > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Taqdir Singh > *Sent:* Tuesday, September 01, 2009 8:00 AM > *To:* cyrus riobah > *Cc:* [email protected] > *Subject:* Re: [OSL | CCIE_RS] No IP Routing ISSUE > > > > 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 > -- Taqdir Singh CCNP- (R), CCNA 09911709496 Do today what others won't so you can live tomorrow as others can't
R0#sh run Building configuration... Current configuration : 790 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R0 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 172.16.10.1 255.255.255.0 ! interface Serial0/0 ip address 10.1.1.1 255.255.255.0 serial restart-delay 0 ! interface Serial0/1 no ip address shutdown serial restart-delay 0 ! interface Serial0/2 no ip address shutdown serial restart-delay 0 ! interface Serial0/3 no ip address shutdown serial restart-delay 0 ! ip http server no ip http secure-server ip route 0.0.0.0 0.0.0.0 Serial0/0 ! ! ! ! ! ! control-plane ! ! ! ! ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4 ! ! end R0#
R1#sh run Building configuration... Current configuration : 752 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R1 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Serial0/0 no ip address shutdown serial restart-delay 0 ! interface Serial0/1 ip address 10.1.1.2 255.255.255.0 serial restart-delay 0 ! interface Serial0/2 ip address 172.32.1.1 255.255.255.0 serial restart-delay 0 ! interface Serial0/3 no ip address shutdown serial restart-delay 0 ! ip http server no ip http secure-server ip route 172.16.10.0 255.255.255.0 Serial0/1 ! ! ! ! ! ! control-plane ! ! ! ! ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4 ! ! end R1#
R2#sh run Building configuration... Current configuration : 803 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R2 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 no ip routing ! ! no ip cef ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Serial0/0 no ip address no ip route-cache shutdown serial restart-delay 0 ! interface Serial0/1 no ip address no ip route-cache shutdown serial restart-delay 0 ! interface Serial0/2 ip address 172.18.10.1 255.255.255.0 no ip route-cache serial restart-delay 0 ! interface Serial0/3 ip address 172.32.1.2 255.255.255.0 no ip route-cache serial restart-delay 0 ! ip http server no ip http secure-server ! ! ! ! ! ! control-plane ! ! ! ! ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4 ! ! end R2#
<<attachment: routing problem.jpg>>
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