- Topology
[R3]-ge-0/0/2--------------ge-0/0/2-[R1]
- OSFP 네이버 ExStart 상태
root@R3# run show ospf neighbor
R3# run show ospf neighbor
Address Interface State ID Pri Dead
10.10.13.1 ge-0/0/2.0 ExStart 1.1.1.1 128 37
ExStart : database sync 중인 상태. FULL 상태가 아님.
- 트러블슈팅을 위한 traceoption 설정 ( cisco debug command 와 동일하다고 보면됨)
root@R1# set protocols ospf traceoptions file ospf.log
root@R1# set protocols ospf traceoptions flag error detail
root@R1# commit
- OSFP 로그 확인
root@R1# run show log ospf.log
Nov 18 07:06:06.275796 OSPF packet ignored: MTU mismatch from 10.10.13.3 on intf ge-0/0/2.0 area 0.0.0.0
Nov 18 07:06:10.310038 OSPF packet ignored: MTU mismatch from 10.10.13.3 on intf ge-0/0/2.0 area 0.0.0.0
Nov 18 07:06:14.389599 OSPF packet ignored: MTU mismatch from 10.10.13.3 on intf ge-0/0/2.0 area 0.0.0.0
Nov 18 07:06:19.429346 OSPF packet ignored: MTU mismatch from 10.10.13.3 on intf ge-0/0/2.0 area 0.0.0.0
> MTU mismatch 확인
-라우터 설정 확인
root@R3# show protocols ospf | display set
set protocols ospf area 0.0.0.0 interface lo0.0 passive
set protocols ospf area 0.0.0.0 interface ge-0/0/2.0 interface-type p2p
root@R3# show interfaces ge-0/0/2 | display set
set interfaces ge-0/0/2 mtu 9000
set interfaces ge-0/0/2 unit 0 family inet address 10.10.13.3/24
root@R1# show protocols ospf | display set
set protocols ospf area 0.0.0.0 interface lo0.0 passive
set protocols ospf area 0.0.0.0 interface ge-0/0/0.0 interface-type p2p
set protocols ospf traceoptions file ospf.log
set protocols ospf traceoptions flag error detail
root@R1# show interfaces ge-0/0/2 | display set
set interfaces ge-0/0/2 unit 0 family inet address 10.10.13.1/24
R1 ge-0/0/2 MTU : 1500 ( default )
R3 ge-0/0/2 MTU : 9000
- R3 ge-0/0/2 MTU 수정 ( 9000 -> 1500 )
root@R3# delete interfaces ge-0/0/2 mtu
- 수정 후 OSPF neighbor 확인
@R3# run show ospf neighbor
Address Interface State ID Pri Dead
10.10.13.1 ge-0/0/2.0 Full 1.1.1.1 128 37