OSPF neigboring issue

[mazlan.alatif]

Hi, I have configured my router to run OSPF and established adj with other routers (thru switch). However there are 2 routers that wont established the adj. It keep appears below log. It is in the same network/subnet. The MTU is 1500. What is other posibble things to check?

FastEthernet5/0/0 from 2WAY to DOWN, Neighbor Down: Interface down or detached

[mazlan.alatif]

Harold,

Below is the output from opposite router when i run debug ospf adj.

May 21 21:27:49.603: OSPF: Up DBD Retransmit cnt to 3 for 61.6.191.77 on FastEthernet5/0/0

May 21 21:27:49.603: OSPF: Send DBD to 61.6.191.77 on FastEthernet5/0/0 seq 0xDAB opt 0x52 flag 0x7 len 32

May 21 21:27:54.603: OSPF: Retransmitting DBD to 61.6.191.77 on FastEthernet5/0/0

May 21 21:27:54.603: OSPF: Up DBD Retransmit cnt to 4 for 61.6.191.77 on FastEthernet5/0/0

May 21 21:27:54.603: OSPF: Send DBD to 61.6.191.77 on FastEthernet5/0/0 seq 0xDAB opt 0x52 flag 0x7 len 32

May 21 21:27:59.603: OSPF: Retransmitting DBD to 61.6.191.77 on FastEthernet5/0/0

[044102947]

Hi Mazlan,

What kind of switch u are using to connect routers, if it is manageable please check the VLAN configuration of switch, or please check the HELO and HOLD DOWN timers on routers.

[Ciscouser1!]

HI,

Did you ever resolve this issue?

Regards