ospf反复出现FULL to DOWN, Neighbor Down: Dead timer expir ...

zhoubing2215

cisco 2600上一直报警如下：
cisco2600#
6d20h: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1.1 on FastEthernet0/0 from FULL to DOWN, Neighbor Down: Dead timer expired
cisco2600#
6d20h: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1.1 on FastEthernet0/0 from LOADING to FULL, Loading Done
电信线路接入之后中间有一2950，端口配置portfast和bpdu，
还有一点是只要我吧上联线（2600连接电信线路）线路拔除，一切都正常，报警也不报了
线插着一直报警，2600也奇慢无比        

基本拓扑如下：
配置如下:
cisco 2600
cisco2600#show ip ospf interface fastEthernet 0/0
FastEthernet0/0 is up, line protocol is up
  Internet Address 10.1.1.2/30, Area 0
  Process ID 1, Router ID 2.2.2.2, Network Type BROADCAST, Cost: 1
  Transmit Delay is 1 sec, State DR, Priority 1
  Designated Router (ID) 2.2.2.2, Interface address 10.1.1.2
  Backup Designated router (ID) 1.1.1.1, Interface address 10.1.1.1
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    Hello due in 00:00:08
  Index 2/2, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 1, maximum is 2
  Last flood scan time is 0 msec, maximum is 4 msec
  Neighbor Count is 1, Adjacent neighbor count is 1
    Adjacent with neighbor 1.1.1.1  (Backup Designated Router)
  Suppress hello for 0 neighbor(s)

cisco2600#sho running-config
Building configuration...

Current configuration : 1178 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname cisco2600
!
enable password cisco
!
ip subnet-zero
!
!
no ip domain-lookup
ip domain-name bing.com
!
!
!
!
interface Loopback0
ip address 2.2.2.2 255.255.255.255
!         
interface FastEthernet0/0
ip address 10.1.1.2 255.255.255.252
ip nat inside
duplex auto
speed auto
!
interface Serial0/0
no ip address
!
interface FastEthernet0/1
ip address 221.136.94.213 255.255.255.248
ip nat outside
duplex auto
speed 10
!
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
passive-interface default
no passive-interface FastEthernet0/0
network 2.2.2.2 0.0.0.0 area 0
network 10.1.1.0 0.0.0.3 area 0
default-information originate
!
ip nat inside source list 1 interface FastEthernet0/1 overload
ip classless
ip route 0.0.0.0 0.0.0.0 221.136.94.214
ip http server
ip pim bidir-enable
!
!
access-list 1 permit 50.1.1.0 0.0.0.255
access-list 1 permit 60.1.1.0 0.0.0.255
access-list 1 permit 70.1.1.0 0.0.0.255
access-list 1 permit 80.1.1.0 0.0.0.255
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
password cisco
login
!
!
end      


cisco 3550:
r1#show ip ospf interface fastEthernet 0/2
FastEthernet0/2 is up, line protocol is up (connected)
  Internet Address 10.1.1.1/30, Area 0
  Process ID 1, Router ID 1.1.1.1, Network Type BROADCAST, Cost: 1
  Transmit Delay is 1 sec, State BDR, Priority 1
  Designated Router (ID) 2.2.2.2, Interface address 10.1.1.2
  Backup Designated router (ID) 1.1.1.1, Interface address 10.1.1.1
  Flush timer for old DR LSA due in 00:00:15
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    Hello due in 00:00:05
  Index 2/2, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 1, maximum is 2
  Last flood scan time is 0 msec, maximum is 4 msec
  Neighbor Count is 1, Adjacent neighbor count is 1
    Adjacent with neighbor 2.2.2.2  (Designated Router)
  Suppress hello for 0 neighbor(s)
r1#
r1#
r1#show run
r1#show running-config
Building configuration...

Current configuration : 3517 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r1
!
enable password cisco
!
ip subnet-zero
ip routing
!
ip dhcp pool vlan50
   network 50.1.1.0 255.255.255.0
   default-router 50.1.1.254
   dns-server 114.114.114.114
!
ip dhcp pool vlan60
   network 60.1.1.0 255.255.255.0
   default-router 60.1.1.254
   dns-server 114.114.114.114
!
ip dhcp pool vlan70
   network 70.1.1.0 255.255.255.0
   default-router 70.1.1.254
   dns-server 114.114.114.114
!
ip dhcp pool vlan80
   network 80.1.1.0 255.255.255.0
   default-router 80.1.1.254
   dns-server 114.114.114.114
!
no ip domain-lookup
!
spanning-tree mode pvst
spanning-tree extend system-id
!
!
!
interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
interface FastEthernet0/1
switchport mode dynamic desirable
!
interface FastEthernet0/2
no switchport
ip address 10.1.1.1 255.255.255.252
!
interface FastEthernet0/3
switchport mode dynamic desirable
!
interface FastEthernet0/4
switchport access vlan 172
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/5
switchport access vlan 50
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/6
switchport access vlan 60
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/7
switchport access vlan 70
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/8
switchport access vlan 80
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/9
switchport mode dynamic desirable
!

!
interface FastEthernet0/24
switchport mode dynamic desirable
!
interface GigabitEthernet0/1
switchport mode dynamic desirable
!
interface GigabitEthernet0/2
switchport mode dynamic desirable
!
interface Vlan1
no ip address
shutdown
!
interface Vlan50
ip address 50.1.1.254 255.255.255.0
!
interface Vlan51
no ip address
!
interface Vlan60
ip address 60.1.1.254 255.255.255.0
!
interface Vlan70
ip address 70.1.1.254 255.255.255.0
!
interface Vlan80
ip address 80.1.1.254 255.255.255.0
!
interface Vlan172
no ip address
shutdown
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
network 1.1.1.1 0.0.0.0 area 0
network 10.1.1.0 0.0.0.3 area 0
network 50.1.1.0 0.0.0.255 area 0
network 60.1.1.0 0.0.0.255 area 0
network 70.1.1.0 0.0.0.255 area 0
network 80.1.1.0 0.0.0.255 area 0
!
ip classless
ip http server
!
!
!
line con 0
exec-timeout 0 0
password cisco
logging synchronous
login
line vty 0 4
password cisco
login
line vty 5 15
login   
!
end

zhoubing2215

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