Hi all, I was working on WBVol.3 Lab 4 today , I was working on Troubleshooting ticket 3 , where " Routers R2,R4 and R5 are having connectivity issue " ,
After I solved the issue , I found that OSPF neighboring between R2 and R6 on ( s0/1/0.206 & s0/1/0 respectively ) is swinging between INIT and Exchange and goes back to INIT , here is below the configration on both and "debug ospf events" on R6 : R2: R2(config-if)#do sh ip ospf nei detail Neighbor 86.87.0.6, interface address 86.87.26.6 In the area 0 via interface Serial0/1/0.206 Neighbor priority is 0, State is EXSTART, 3 state changes DR is 0.0.0.0 BDR is 0.0.0.0 Options is 0x12 in Hello (E-bit, L-bit) Options is 0x12 in DBD (E-bit, L-bit) LLS Options is 0x1 (LR) Dead timer due in 00:00:36 Neighbor is up for 00:01:58 Index 0/0, retransmission queue length 0, number of retransmission 0 First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0) Last retransmission scan length is 0, maximum is 0 Last retransmission scan time is 0 msec, maximum is 0 msec Number of retransmissions for last database description packet 25 R6: R6(config-if)#do sh ip ospf nei de Neighbor 86.87.26.2, interface address 86.87.26.2 In the area 0 via interface Serial0/1/0 Neighbor priority is 0, State is EXCHANGE, 8 state changes DR is 0.0.0.0 BDR is 0.0.0.0 Options is 0x12 in Hello (E-bit, L-bit) Options is 0x52 in DBD (E-bit, L-bit, O-bit) LLS Options is 0x1 (LR) Dead timer due in 00:00:37 Neighbor is up for 00:01:48 Index 1/1, retransmission queue length 0, number of retransmission 0 First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0) Last retransmission scan length is 0, maximum is 0 Last retransmission scan time is 0 msec, maximum is 0 msec DEBUG on R6: R6(config-if)#do debug ip ospf eve *Apr 29 05:47:52.563: OSPF: Rcv hello from 86.87.26.2 area 0 from Serial0/1/0 86.87.26.2 *Apr 29 05:47:52.563: OSPF: Cannot see ourself in hello from 86.87.26.2 on Serial0/1/0, state INIT *Apr 29 05:47:52.567: OSPF: Serial0/1/0 Nbr 86.87.26.2: Clean-up dbase exchange *Apr 29 05:47:52.567: OSPF: Send immediate hello to nbr 86.87.26.2, src address 86.87.26.2, on Serial0/1/0 *Apr 29 05:47:52.567: OSPF: Send hello to 224.0.0.5 area 0 on Serial0/1/0 from 86.87.26.6 *Apr 29 05:47:52.567: OSPF: End of hello processing R6(config-if)#do debug ip ospf ad *Apr 29 05:47:56.839: OSPF: Rcv DBD from 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x7 len 32 mtu 1500 state INIT *Apr 29 05:47:56.839: OSPF: 2 Way Communication to 86.87.26.2 on Serial0/1/0, state 2WAY *Apr 29 05:47:56.839: OSPF: Serial0/1/0 Nbr 86.87.26.2: Prepare dbase exchange *Apr 29 05:47:56.839: OSPF: Send DBD to 86.87.26.2 on Serial0/1/0 seq 0xC1F opt 0x52 flag 0x7 len 32 *Apr 29 05:47:56.843: OSPF: NBR Negotiation Done. We are the SLAVE *Apr 29 05:47:56.843: OSPF: Serial0/1/0 Nbr 86.87.26.2: Summary list built, size 5 *Apr 29 05:47:56.843: OSPF: Send DBD to 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x2 len 132 R6(config-if)#do debug ip ospf ad OSPF adjacency events debugging is on R6(config-if)# *Apr 29 05:47:56.847: OSPF: Rcv hello from 86.87.26.2 area 0 from Serial0/1/0 86.87.26.2 *Apr 29 05:47:56.847: OSPF: End of hello processing R6(config-if)# *Apr 29 05:47:58.587: OSPF: Send hello to 224.0.0.5 area 0 on FastEthernet0/0.56 from 86.87.56.6 R6(config-if)# *Apr 29 05:48:00.343: OSPF: Send hello to 224.0.0.5 area 0 on Serial0/1/0 from 86.87.26.6 R6(config-if)# *Apr 29 05:48:01.539: OSPF: Rcv DBD from 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x7 len 32 mtu 1500 state EXCHANGE *Apr 29 05:48:01.539: OSPF: Send DBD to 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x2 len 132 *Apr 29 05:48:02.339: OSPF: Rcv hello from 86.87.26.2 area 0 from Serial0/1/0 86.87.26.2 *Apr 29 05:48:02.343: OSPF: End of hello processing R6(config-if)# *Apr 29 05:48:06.339: OSPF: Rcv DBD from 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x7 len 32 mtu 1500 state EXCHANGE *Apr 29 05:48:06.339: OSPF: Send DBD to 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x2 len 132 R6(config-if)# *Apr 29 05:48:07.855: OSPF: Send hello to 224.0.0.5 area 0 on FastEthernet0/0.56 from 86.87.56.6 R6(config-if)# *Apr 29 05:48:10.195: OSPF: Send hello to 224.0.0.5 area 0 on Serial0/1/0 from 86.87.26.6 R6(config-if)# *Apr 29 05:48:11.239: OSPF: Rcv DBD from 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x7 len 32 mtu 1500 state EXCHANGE *Apr 29 05:48:11.239: OSPF: Send DBD to 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x2 len 132 *Apr 29 05:48:11.839: OSPF: Rcv hello from 86.87.26.2 area 0 from Serial0/1/0 86.87.26.2 *Apr 29 05:48:11.839: OSPF: End of hello processing R6(config-if)# *Apr 29 05:48:15.739: OSPF: Rcv DBD from 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x7 len 32 mtu 1500 state EXCHANGE *Apr 29 05:48:15.739: OSPF: Send DBD to 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x2 len 132 R6(config-if)# *Apr 29 05:48:17.315: OSPF: Send hello to 224.0.0.5 area 0 on FastEthernet0/0.56 from 86.87.56.6 R6(config-if)# *Apr 29 05:48:19.403: OSPF: Send hello to 224.0.0.5 area 0 on Serial0/1/0 from 86.87.26.6 R6(config-if)# *Apr 29 05:48:20.739: OSPF: Rcv DBD from 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x7 len 32 mtu 1500 state EXCHANGE *Apr 29 05:48:20.739: OSPF: Send DBD to 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x2 len 132 R6(config-if)# *Apr 29 05:48:21.739: OSPF: Rcv hello from 86.87.26.2 area 0 from Serial0/1/0 86.87.26.2 *Apr 29 05:48:21.739: OSPF: End of hello processing R6(config-if)# *Apr 29 05:48:25.439: OSPF: Rcv DBD from 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x7 len 32 mtu 1500 state EXCHANGE *Apr 29 05:48:25.439: OSPF: Send DBD to 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x2 len 132 R6(config-if)# *Apr 29 05:48:26.783: OSPF: Send hello to 224.0.0.5 area 0 on FastEthernet0/0.56 from 86.87.56.6 R6(config-if)# *Apr 29 05:48:29.019: OSPF: Send hello to 224.0.0.5 area 0 on Serial0/1/0 from 86.87.26.6 R6(config-if)# *Apr 29 05:48:30.239: OSPF: Rcv DBD from 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x7 len 32 mtu 1500 state EXCHANGE *Apr 29 05:48:30.239: OSPF: Send DBD to 86.87.26.2 on Serial0/1/0 seq 0x2172 opt 0x52 flag 0x2 len 132 *Apr 29 05:48:31.139: OSPF: Rcv hello from 86.87.26.2 area 0 from Serial0/1/0 86.87.26.2 *Apr 29 05:48:31.139: OSPF: End of hello processing R6(config-if)# Ping between them was failing , shut and noshut the interfaces did not solve it too. R6 interface configuration: ! interface Serial0/1/0 ip address 86.87.26.6 255.255.255.224 encapsulation frame-relay ip ospf network non-broadcast no fair-queue frame-relay class FR-QoS frame-relay traffic-shaping frame-relay map ip 86.87.26.6 602 frame-relay map ip 86.87.26.2 602 broadcast no frame-relay inverse-arp no shutdown ! R2 interface configuration : ! interface Serial0/1/0.206 ip address 86.87.26.2 255.255.255.224 ip ospf network non-broadcast frame-relay map ip 86.87.26.6 206 b frame-relay map ip 86.87.26.2 206 ! Please check and advice . Best Regards Waleed Abdulfattah Alsherif IP and Data Network Engineer CCIE RS (Written) / CCNP / CCNA Mob. 002-01019556246 _______________________________________________ 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
