""Arnaud V."" wrote in message news:[EMAIL PROTECTED] > Hello, > > I have an ospf problem. Two neighbors on a nbma > network who have connectivity are unable to go in the > two state, but have establish adjacency with the DR. > I include the configurations and ospf neighbor > states.
the problem is that the router with the multipoint subinterface considers that it is on an NMBA, and therefore considers itself as the DR, while the router using the point-to-point subinterface considers that it is on a point-to-point link, and therefore does not believe in the necessity for a DR. if you look at the "show ip ospf neigh" result, your see the "attempt/DRother" the DR is expecting a response from it's partner indicating the partner is neither a DR or BDR. in L2 terms, a multipoint subinterface connected to point-to-point subinterfaces treats all connections as a series of point-to-point links. due to the manner in which OSPF interacts with frame relay, you can easily get situations like this. off the top of my head, without knowing the partciulars, I would advise that you change the ospf network type to NMBA on the spokes, and use neighbor statements on the hub. Also, don't forget to manipulate the priorities so that the hub router becomes the DR. > Perhaps have I done a mistake or don't know ospf > enough. Can u help please. > > Thanks in advance > > __________________________________________________ > Do you Yahoo!? > Yahoo! Tax Center - forms, calculators, tips, more > http://taxes.yahoo.com/ > R2 > > interface Serial1/0 > no ip address > encapsulation frame-relay IETF > no fair-queue > frame-relay traffic-shaping > frame-relay class R2-ts > ! > interface Serial1/0.1 point-to-point > ip address 150.50.24.1 255.255.255.252 > ip ospf message-digest-key 1 md5 cisco > frame-relay interface-dlci 204 > ! > interface Serial1/0.2 multipoint > ip address 150.50.100.1 255.255.255.224 > ip ospf message-digest-key 1 md5 cisco > ip ospf network non-broadcast > ip ospf priority 0 > frame-relay map ip 150.50.100.2 205 broadcast > frame-relay map ip 150.50.100.3 203 broadcast > ! > router ospf 1 > log-adjacency-changes > area 0 authentication message-digest > redistribute connected subnets > network 150.50.24.0 0.0.0.3 area 0 > network 150.50.100.0 0.0.0.127 area 0 > -------------------------------------------------------------------------- ------ > > ROUTERp1R2#sh ip ospf neigh > > Neighbor ID Pri State Dead Time Address Interface > 172.32.1.1 1 FULL/ - 00:00:38 150.50.24.2 Serial1/0.1 > N/A 0 ATTEMPT/DROTHER - 150.50.100.3 Serial1/0.2 > 5.5.5.5 255 FULL/DR 00:01:39 150.50.100.2 Serial1/0.2 > -------------------------------------------------------------------------- ------- > > ROUTERp1R2#sh ip ospf int > Serial1/0.1 is up, line protocol is up > Internet Address 150.50.24.1/30, Area 0 > Process ID 1, Router ID 2.2.2.2, Network Type POINT_TO_POINT, Cost: 48 > Transmit Delay is 1 sec, State POINT_TO_POINT, > Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 > Hello due in 00:00:02 > Index 1/1, flood queue length 0 > Next 0x0(0)/0x0(0) > Last flood scan length is 1, maximum is 6 > Last flood scan time is 0 msec, maximum is 0 msec > Neighbor Count is 1, Adjacent neighbor count is 1 > Adjacent with neighbor 172.32.1.1 > Suppress hello for 0 neighbor(s) > Message digest authentication enabled > Youngest key id is 1 > Serial1/0.2 is up, line protocol is up > Internet Address 150.50.100.1/27, Area 0 > Process ID 1, Router ID 2.2.2.2, Network Type NON_BROADCAST, Cost: 48 > Transmit Delay is 1 sec, State DROTHER, Priority 0 > Designated Router (ID) 5.5.5.5, Interface address 150.50.100.2 > No backup designated router on this network > Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5 > Hello due in 00:00:10 > Index 2/2, flood queue length 0 > Next 0x0(0)/0x0(0) > Last flood scan length is 1, maximum is 6 > Last flood scan time is 0 msec, maximum is 0 msec > Neighbor Count is 1, Adjacent neighbor count is 1 > Adjacent with neighbor 5.5.5.5 (Designated Router) > Suppress hello for 0 neighbor(s) > Message digest authentication enabled > Youngest key id is 1 > FastEthernet4/0 is up, line protocol is up > Internet Address 150.50.17.2/24, Area 3 > Process ID 1, Router ID 2.2.2.2, Network Type POINT_TO_MULTIPOINT, Cost: 1 > Transmit Delay is 1 sec, State POINT_TO_MULTIPOINT, > Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5 > Hello due in 00:00:07 > Index 1/3, flood queue length 0 > Next 0x0(0)/0x0(0) > Last flood scan length is 0, maximum is 0 > Last flood scan time is 0 msec, maximum is 0 msec > Neighbor Count is 0, Adjacent neighbor count is 0 > Suppress hello for 0 neighbor(s) > R3 > > interface Serial2/0 > ip address 150.50.100.3 255.255.255.224 > encapsulation frame-relay IETF > ip ospf message-digest-key 1 md5 cisco > ip ospf priority 0 > clockrate 2015232 > frame-relay map ip 150.50.100.1 302 broadcast > frame-relay map ip 150.50.100.2 305 broadcast > frame-relay map ip 150.50.100.3 302 > no frame-relay inverse-arp > > router ospf 1 > log-adjacency-changes > area 0 authentication message-digest > network 150.50.100.0 0.0.0.127 area 0 > > -------------------------------------------------------------------------- ------- > routerp1R3#sh ip ospf neigh > > Neighbor ID Pri State Dead Time Address Interface > 2.2.2.2 0 INIT/DROTHER 00:00:57 150.50.100.1 Serial2/0 > 5.5.5.5 255 FULL/DR 00:01:48 150.50.100.2 Serial2/0 > > -------------------------------------------------------------------------- ------- > routerp1R3#sh ip ospf int > Serial2/0 is up, line protocol is up > Internet Address 150.50.100.3/27, Area 0 > Process ID 1, Router ID 3.3.3.3, Network Type NON_BROADCAST, Cost: 48 > Transmit Delay is 1 sec, State DROTHER, Priority 0 > Designated Router (ID) 5.5.5.5, Interface address 150.50.100.2 > No backup designated router on this network > Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5 > Hello due in 00:00:11 > Index 1/1, flood queue length 0 > Next 0x0(0)/0x0(0) > Last flood scan length is 1, maximum is 1 > Last flood scan time is 0 msec, maximum is 0 msec > Neighbor Count is 2, Adjacent neighbor count is 1 > Adjacent with neighbor 5.5.5.5 (Designated Router) > Suppress hello for 0 neighbor(s) > Message digest authentication enabled > Youngest key id is 1 > R5 > > interface Serial1/1 > ip address 150.50.100.2 255.255.255.224 > encapsulation frame-relay IETF > ip ospf message-digest-key 1 md5 cisco > ip ospf priority 255 > frame-relay de-group 1 502 > frame-relay map ip 150.50.100.1 502 broadcast > frame-relay map ip 150.50.100.2 502 > frame-relay map ip 150.50.100.3 503 broadcast > > router ospf 1 > log-adjacency-changes > area 0 authentication message-digest > area 4 nssa > network 9.9.9.0 0.0.0.255 area 4 > network 150.50.100.0 0.0.0.127 area 0 > neighbor 150.50.100.3 > neighbor 150.50.100.1 > > -------------------------------------------------------------------------- ------- > routerp1R5#sh ip ospf neigh > > Neighbor ID Pri State Dead Time Address Interface > 3.3.3.3 0 FULL/DROTHER 00:01:44 150.50.100.3 Serial1/1 > 2.2.2.2 0 FULL/DROTHER 00:01:36 150.50.100.1 Serial1/1 > -------------------------------------------------------------------------- ------- > > routerp1R5#sh ip ospf int > Serial1/1 is up, line protocol is up > Internet Address 150.50.100.2/27, Area 0 > Process ID 1, Router ID 5.5.5.5, Network Type NON_BROADCAST, Cost: 48 > Transmit Delay is 1 sec, State DR, Priority 255 > Designated Router (ID) 5.5.5.5, Interface address 150.50.100.2 > No backup designated router on this network > Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5 > Hello due in 00:00:17 > Index 1/1, flood queue length 0 > Next 0x0(0)/0x0(0) > Last flood scan length is 1, maximum is 6 > Last flood scan time is 0 msec, maximum is 0 msec > Neighbor Count is 2, Adjacent neighbor count is 2 > Adjacent with neighbor 3.3.3.3 > Adjacent with neighbor 2.2.2.2 > Suppress hello for 0 neighbor(s) > Message digest authentication enabled > Youngest key id is 1 > Loopback2 is up, line protocol is up > Internet Address 9.9.9.1/24, Area 4 > Process ID 1, Router ID 5.5.5.5, Network Type LOOPBACK, Cost: 1 > Loopback interface is treated as a stub Host Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=64178&t=64176 -------------------------------------------------- FAQ, list archives, and 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