Like somebody said, you have a default static route getting in there somehow. Where is that coming from?
On Tue, Sep 1, 2009 at 11:23 AM, Taqdir Singh <[email protected]>wrote: > 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 > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > -- Regards, Joe Astorino - CCIE #24347 R&S Technical Instructor - IPexpert, Inc. Cell: +1.586.212.6107 Fax: +1.810.454.0130 Mailto: [email protected]
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