Bob- any chance your IOS 15 is handling this differently? Regards, Jay McMickle- CCNP,CCSP,CCDP Sent from my iPhone http://mycciepursuit.wordpress.com
On Dec 27, 2011, at 9:10 PM, Bob McCouch <[email protected]> wrote: > Very curious then. This works as one would expect in my lab: > > Configured R1 on the physical FR interface and left InARP enabled: > > Current configuration : 113 bytes > > ! > > interface Serial1/0 > > ip address 10.1.0.1 255.255.255.0 > > encapsulation frame-relay > > serial restart-delay 0 > > end > > >> > R2, R3, and R4 have been configured with other IP addresses in different > ranges. After a few moments, the dynamic mappings populate: > > > R1#sh frame map >> Serial1/0 (up): ip 172.16.1.2 dlci 102(0x66,0x1860), dynamic, >> broadcast, >> CISCO, status defined, active >> Serial1/0 (up): ip 172.16.1.3 dlci 103(0x67,0x1870), dynamic, >> broadcast, >> CISCO, status defined, active >> Serial1/0 (up): ip 192.168.1.4 dlci 104(0x68,0x1880), dynamic, >> broadcast, >> CISCO, status defined, active > > > > Verified that the routing table on R1 does not magically populate IP routes > for InARP-learned mappings: > > R1#sh ip ro | b Ga >> Gateway of last resort is not set >> 10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks >> C 10.1.0.0/24 is directly connected, Serial1/0 >> L 10.1.0.1/32 is directly connected, Serial1/0 > > > > And finally enabled debug ip packet, and we can see that we're not even > getting to a point of an L2 lookup, the destination is simply unreachable > as we have no route in the route table to get us to the target, even though > we have the proper L2/L3 mapping: > > R1#deb ip packet >> IP packet debugging is on >> R1#ping 172.16.1.3 >> Type escape sequence to abort. >> Sending 5, 100-byte ICMP Echos to 172.16.1.3, timeout is 2 seconds: >> *Dec 28 03:01:56.190: IP: s=10.1.0.1 (local), d=172.16.1.3, len 100, >> unroutable. >> *Dec 28 03:01:58.192: IP: s=10.1.0.1 (local), d=172.16.1.3, len 100, >> unroutable. >> *Dec 28 03:02:00.192: IP: s=10.1.0.1 (local), d=172.16.1.3, len 100, >> unroutable. >> *Dec 28 03:02:02.192: IP: s=10.1.0.1 (local), d=172.16.1.3, len 100, >> unroutable. >> *Dec 28 03:02:04.192: IP: s=10.1.0.1 (local), d=172.16.1.3, len 100, >> unroutable. >> Success rate is 0 percent (0/5) > > > > I'd suggest trying a debug ip packet to see what happens when the pings are > being sent. > > Your router must be learning those routes in some way. InARP mappings do > not automatically create IP routes, so there must be some reason the router > is actually selecting that egress interface for your pings. > > > On Tue, Dec 27, 2011 at 9:36 PM, Mahir Ali Ahmed <[email protected]> wrote: > >> There is no routing enabled, my route table (R4) has only connected routes >> which does not have 150.100.100.0 network it only has 150.100.24.0 network. >> >> .ılı.ılı. >> Mahir Ali Ahmed >> Specialist Service & Infrastructure Operations >> The past is dead ! The future, yet unborn ! Time to live in the present. >> Time to move on ! >> >> >> On Tue, Dec 27, 2011 at 9:32 PM, Bob McCouch <[email protected]> wrote: >> >>> Just because you have L2 mappings, though, does not automatically install >>> routes in the RIB for those destinations (unless you're doing PPPoFR). >> The >>> mappings from InARP make sense, but why would the router be even trying >> to >>> egress IP packets out that interface? >>> >>> Mahir, what does your route table look like? >>> >>> >>> On Tue, Dec 27, 2011 at 8:43 PM, Jay McMickle <[email protected] >>> wrote: >>> >>>> Since this is a physical interface, and you haven't disabled inverse >> arp, >>>> you are getting all of the DLCI's from the frame switch. R2 probably >> has a >>>> mapping to R6 (100.6) so it's routing through the hub to the spoke >>>> dynamically. >>>> >>>> Regards, >>>> Jay McMickle- CCNP,CCSP,CCDP >>>> Sent from my iPhone >>>> http://mycciepursuit.wordpress.com >>>> >>>> >>>> On Dec 27, 2011, at 6:57 PM, Mahir Ali Ahmed <[email protected]> >> wrote: >>>> >>>>> Hi All, >>>>> >>>>> I am doing frame relay lab on virtual environment. >>>>> In task 6.4 this is my R4 configs >>>>> >>>>> ==== >>>>> R4(config-if)#do sh run int s0/0 >>>>> interface Serial0/0 >>>>> ip address 150.100.24.4 255.255.255.0 >>>>> encapsulation frame-relay >>>>> clock rate 2000000 >>>>> end >>>>> ==== >>>>> >>>>> And these are the mapping I am getting >>>>> >>>>> ==== >>>>> R4(config-if)#do sh frame map >>>>> Serial0/0 (up): ip 150.100.24.2 dlci 402(0x192,0x6420), dynamic, >>>>> broadcast, >>>>> CISCO, status defined, active >>>>> Serial0/0 (up): ip 150.100.100.6 dlci 416(0x1A0,0x6800), dynamic, >>>>> broadcast, >>>>> CISCO, status defined, active >>>>> Serial0/0 (up): ip 150.100.100.2 dlci 422(0x1A6,0x6860), dynamic, >>>>> broadcast, >>>>> CISCO, status defined, active >>>>> ==== >>>>> >>>>> According to the task I should only use "0" DLCI but I am getting >>>> others as >>>>> well >>>>> >>>>> I check the DSG and it said that >>>>> >>>>> "We learn more than one IP. But the other subnet isn't locally >> defined, >>>> so >>>>> it doesn't matter. (If it's not locally defined, it won't do a L3-L2 >>>>> address lookup anyway.) >>>>> >>>>> BUT >>>>> >>>>> ==== >>>>> R4(config-if)#do ping 150.100.100.6 >>>>> Sending 5, 100-byte ICMP Echos to 150.100.100.6, timeout is 2 seconds: >>>>> !!!!! >>>>> Success rate is 100 percent (5/5), round-trip min/avg/max = 1/12/32 ms >>>>> >>>>> R4(config-if)#do ping 150.100.100.2 >>>>> Sending 5, 100-byte ICMP Echos to 150.100.100.2, timeout is 2 seconds: >>>>> !!!!! >>>>> Success rate is 100 percent (5/5), round-trip min/avg/max = 1/11/36 ms >>>>> ==== >>>>> >>>>> I want to know why this happening in my lab. No other interface is >>>>> configures at this moment. >>>>> >>>>> Thanks >>>>> >>>>> .ılı.ılı. >>>>> Mahir Ali Ahmed >>>>> Specialist Service & Infrastructure Operations >>>>> The past is dead ! The future, yet unborn ! Time to live in the >> present. >>>>> Time to move on ! >>>>> _______________________________________________ >>>>> For more information regarding industry leading CCIE Lab training, >>>> please visit www.ipexpert.com >>>>> >>>>> Are you a CCNP or CCIE and looking for a job? Check out >>>> www.PlatinumPlacement.com >>>>> >>>>> http://onlinestudylist.com/mailman/listinfo/ccie_rs >>>> _______________________________________________ >>>> For more information regarding industry leading CCIE Lab training, >> please >>>> visit www.ipexpert.com >>>> >>>> Are you a CCNP or CCIE and looking for a job? Check out >>>> www.PlatinumPlacement.com >>>> >>>> http://onlinestudylist.com/mailman/listinfo/ccie_rs >>>> >>> >>> >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> >> Are you a CCNP or CCIE and looking for a job? Check out >> www.PlatinumPlacement.com >> >> http://onlinestudylist.com/mailman/listinfo/ccie_rs >> > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
