Hi Josh, Typically in the CCIE lab exam you may not use Frame Inverse ARP, which is how the dynamic mappings show up.
For more info about Inverse ARP, read this article by former IPX instructor Joe Astorino: http://astorinonetworks.com/2011/06/15/understanding-frame-relay-inverse-arp/ On the lab exam, you would always be given the frame mappings in some format or another, either in a table or on at least one diagram. You would never need to "figure out" the frame mappings because there isn't really any way from the CPE end to figure that out, short of configuring all your IPs with InARP enabled, seeing how the mappings get populated dynamically, then disabling InARP, clearing mappings, and re-doing them manually. I don't expect they'd make you do that. Hope that helps, Bob On Sun, Jul 29, 2012 at 11:02 AM, Joshua Wood <[email protected]> wrote: > Hello all, in order to add some additional information and hopefully > clarification on what is confusing me. If I open up the frame switch > in GNS3 that is connecting these two routers and find the DLCI > mappings and then apply those mappings to the interfaces everything > seems to work fine. The problem that I can't figure is how to find out > what the DLCI mappings would be without looking at the frame switch > since I assume that i won't have access to the frame switch in the > CCIE lab. > > Below I have copied the settings that I am using that work. > > > R4(config-if)#do sh run int s0/0 > interface Serial0/0 > ip address 1.1.1.1 255.255.255.0 > encapsulation frame-relay > clock rate 2000000 > frame-relay map ip 1.1.1.5 425 > R4(config-if)# > > R4#ping 1.1.1.5 > > Type escape sequence to abort. > Sending 5, 100-byte ICMP Echos to 1.1.1.5, timeout is 2 seconds: > !!!!! > Success rate is 100 percent (5/5), round-trip min/avg/max = 20/31/44 ms > R4# > > -------------------------------- > > R5#sh run int s1/0 > interface Serial1/0 > ip address 1.1.1.5 255.255.255.0 > encapsulation frame-relay > serial restart-delay 0 > frame-relay map ip 1.1.1.1 524 > > R5#ping 1.1.1.1 > Type escape sequence to abort. > Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds: > !!!!! > Success rate is 100 percent (5/5), round-trip min/avg/max = 20/33/52 ms > R5# > > > > > > On Sun, Jul 29, 2012 at 9:23 AM, Joshua Wood <[email protected]> wrote: > > Hello all, I am having trouble understanding what I believe should be > > a basic concept of frame relay. I am using the IPExpert provided GNS3 > > layout in order to get 2 routers to ping each other using frame relay. > > The two routers (R5 and R4) connect via frame switch. The two problems > > that I am having are 1) the devices can’t ping each no matter what I > > try and 2) I can’t figure out how you would find out the DLCI mappings > > without inverse arp which also doesn’t seem to be working. > > > > I have put some relevant info below but I assume that information > > would be needed but I am not sure what would be helpful. This seems > > like it should be simple but I can't seem to get it to work at all, > > not even by accident. > > > > > > R5(config)#do sh run int s1/0 > > Building configuration... > > > > Current configuration : 112 bytes > > ! > > interface Serial1/0 > > ip address 1.1.1.5 255.255.255.0 > > encapsulation frame-relay > > serial restart-delay 0 > > end > > > > R5(config)#do sh fram map > > Serial1/0 (up): ip 0.0.0.0 dlci 526(0x20E,0x80E0) > > broadcast, > > CISCO, status defined, active > > Serial1/0 (up): ip 0.0.0.0 dlci 524(0x20C,0x80C0) > > broadcast, > > CISCO, status defined, active > > Serial1/0 (up): ip 0.0.0.0 dlci 522(0x20A,0x80A0) > > broadcast, > > CISCO, status defined, active > > Serial1/0 (up): ip 0.0.0.0 dlci 516(0x204,0x8040) > > broadcast, > > CISCO, status defined, active > > Serial1/0 (up): ip 0.0.0.0 dlci 514(0x202,0x8020) > > broadcast, > > CISCO, status defined, active > > Serial1/0 (up): ip 0.0.0.0 dlci 512(0x200,0x8000) > > broadcast, > > CISCO, status defined, active > > Serial1/0 (up): ip 0.0.0.0 dlci 506(0x1FA,0x7CA0) > > broadcast, > > CISCO, status defined, active > > Serial1/0 (up): ip 0.0.0.0 dlci 504(0x1F8,0x7C80) > > broadcast, > > CISCO, status defined, active > > Serial1/0 (up): ip 0.0.0.0 dlci 502(0x1F6,0x7C60) > > broadcast, > > CISCO, status defined, active > > R5(config)# > > > > ----------------------------------------------- > > > > R4(config)#do sh run int s0/0 > > Building configuration... > > > > Current configuration : 108 bytes > > ! > > interface Serial0/0 > > ip address 1.1.1.1 255.255.255.0 > > encapsulation frame-relay > > clock rate 2000000 > > end > > > > R4(config)#do sh fram map > > Serial0/0 (up): ip 0.0.0.0 dlci 426(0x1AA,0x68A0) > > broadcast, > > CISCO, status defined, active > > Serial0/0 (up): ip 0.0.0.0 dlci 425(0x1A9,0x6890) > > broadcast, > > CISCO, status defined, active > > Serial0/0 (up): ip 0.0.0.0 dlci 422(0x1A6,0x6860) > > broadcast, > > CISCO, status defined, active > > Serial0/0 (up): ip 0.0.0.0 dlci 416(0x1A0,0x6800) > > broadcast, > > CISCO, status defined, active > > Serial0/0 (up): ip 0.0.0.0 dlci 415(0x19F,0x64F0) > > broadcast, > > CISCO, status defined, active > > Serial0/0 (up): ip 0.0.0.0 dlci 412(0x19C,0x64C0) > > broadcast, > > CISCO, status defined, active > > Serial0/0 (up): ip 0.0.0.0 dlci 406(0x196,0x6460) > > broadcast, > > CISCO, status defined, active > > Serial0/0 (up): ip 0.0.0.0 dlci 405(0x195,0x6450) > > broadcast, > > CISCO, status defined, active > > Serial0/0 (up): ip 0.0.0.0 dlci 402(0x192,0x6420) > > broadcast, > > CISCO, status defined, active > > R4(config)# > _______________________________________________ > 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
