DM***时使用OSPF时邻居不断UPDOWN
配置完OSPF后一直报错。
*Aug 4 03:18:38.935: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.5.254 on Tunnel0 from EXCHANGE to DOWN, Neighbor Down: Adjacency forced to reset
*Aug 4 03:18:39.655: %OSPF-5-ADJCHG: Process 1, Nbr 4.4.4.4 on Tunnel0 from LOADING to FULL, Loading Done
Hub(config-router)#
*Aug 4 03:18:43.787: %OSPF-5-ADJCHG: Process 1, Nbr 4.4.4.4 on Tunnel0 from FULL to DOWN, Neighbor Down: Adjacency forced to reset
*Aug 4 03:18:44.011: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.5.254 on Tunnel0 from EXSTART to DOWN, Neighbor Down: Adjacency forced to reset
*Aug 4 03:18:44.603: %OSPF-5-ADJCHG: Process 1, Nbr 4.4.4.4 on Tunnel0 from LOADING to FULL, Loading Done
Hub(config-router)#
*Aug 4 03:18:53.567: %OSPF-5-ADJCHG: Process 1, Nbr 4.4.4.4 on Tunnel0 from FULL to DOWN, Neighbor Down: Adjacency forced to reset
*Aug 4 03:18:53.779: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.5.254 on Tunnel0 from EXCHANGE to DOWN, Neighbor Down: Adjacency forced to reset
*Aug 4 03:18:54.387: %OSPF-5-ADJCHG: Process 1, Nbr 4.4.4.4 on Tunnel0 from LOADING to FULL, Loading Done
拓扑如下
hub:
interface tunnel 0
ip ospf network broadcast
ip ospf priority 255
spoke (R4 R5) 配置如下
interface tunnel 0
ip ospf network broadcast
ip ospf priority 0
完美解决,这是因为tunnel默认为point-point端口类型,tunnel的邻居超过两个,导致邻居关系一直UPDOWN。这也是OSPF 基础知识点啦。
附完整配置:(本实验SPOKE1为穿越NAT的客户1,SPOKE2为标准客户2。即模拟了标准的DM×××+OSPF,又结合了NAT穿越的场景。使用用户能更好的掌握相关技能。)
HUB:
crypto isakmp policy 10
authentication pre-share
crypto isakmp key test address 0.0.0.0 0.0.0.0
!
!
crypto ipsec transform-set test esp-3des esp-md5-hmac
mode transport
!
crypto ipsec profile testprofile
set transform-set test
!
interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
interface Loopback1
ip address 192.168.1.254 255.255.255.0
ip ospf network point-to-point
!
interface Tunnel0
ip address 172.16.1.100 255.255.255.0
no ip redirects
ip nhrp authentication cisco
ip nhrp map multicast dynamic
ip nhrp network-id 10
ip nhrp cache non-authoritative
ip nhrp redirect
ip ospf network broadcast
ip ospf cost 255
tunnel source FastEthernet0/0
tunnel mode gre multipoint
tunnel protection ipsec profile testprofile
!
interface FastEthernet0/0
ip address 10.0.12.1 255.255.255.0
duplex auto
speed auto
!
router ospf 1
log-adjacency-changes
network 172.16.1.0 0.0.0.255 area 0
network 192.168.1.0 0.0.0.255 area 0
!
ip route 0.0.0.0 0.0.0.0 10.0.12.2
no ip http server
no ip http secure-server
!
NAT1:
interface Loopback0
ip address 3.3.3.3 255.255.255.255
!
interface FastEthernet0/0
ip address 10.0.23.3 255.255.255.0
ip nat outside
ip nat enable
ip virtual-reassembly
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 10.0.35.3 255.255.255.0
ip nat inside
ip virtual-reassembly
duplex auto
speed auto
!
ip route 0.0.0.0 0.0.0.0 10.0.23.2
ip route 172.16.1.1 255.255.255.255 10.0.35.5
ip route 192.168.5.0 255.255.255.0 10.0.35.5
no ip http server
no ip http secure-server
!
!
ip nat inside source list 1 interface FastEthernet0/0 overload
SPOKE1(R5)
crypto isakmp policy 10
authentication pre-share
crypto isakmp key test address 0.0.0.0 0.0.0.0
!
!
crypto ipsec transform-set test esp-3des esp-md5-hmac
mode transport
!
crypto ipsec profile testprofile
set transform-set test
!
interface Loopback0
ip address 5.5.5.5 255.255.255.255
!
interface Loopback5
ip address 192.168.5.254 255.255.255.0
ip ospf network point-to-point
!
interface Tunnel0
ip address 172.16.1.1 255.255.255.0
no ip redirects
ip nhrp authentication cisco
ip nhrp map multicast 10.0.12.1
ip nhrp map 172.16.1.100 10.0.12.1
ip nhrp network-id 10
ip nhrp nhs 172.16.1.100
ip nhrp cache non-authoritative
ip nhrp shortcut
ip ospf network broadcast
ip ospf priority 0
tunnel source FastEthernet0/0
tunnel mode gre multipoint
tunnel protection ipsec profile testprofile
!
interface FastEthernet0/0
ip address 10.0.35.5 255.255.255.0
duplex auto
speed auto
!
router ospf 1
log-adjacency-changes
network 172.16.1.0 0.0.0.255 area 0
network 192.168.5.0 0.0.0.255 area 0
!
ip route 0.0.0.0 0.0.0.0 10.0.35.3
spoke(R4):
crypto isakmp policy 10
authentication pre-share
crypto isakmp key test address 0.0.0.0 0.0.0.0
!
!
crypto ipsec transform-set test esp-3des esp-md5-hmac
mode transport
!
crypto ipsec profile testprofile
set transform-set test
!
interface Loopback0
ip address 4.4.4.4 255.255.255.255
!
interface Tunnel0
ip address 172.16.1.2 255.255.255.0
no ip redirects
ip nhrp authentication cisco
ip nhrp map multicast 10.0.12.1
ip nhrp map 172.16.1.100 10.0.12.1
ip nhrp network-id 10
ip nhrp nhs 172.16.1.100
ip nhrp cache non-authoritative
ip nhrp shortcut
ip ospf network broadcast
ip ospf priority 0
tunnel source FastEthernet0/0
tunnel mode gre multipoint
tunnel protection ipsec profile testprofile
!
interface FastEthernet0/0
ip address 10.0.24.4 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 10.0.46.4 255.255.255.0
duplex auto
speed auto
!
router ospf 1
log-adjacency-changes
network 10.0.46.0 0.0.0.255 area 0
network 172.16.1.0 0.0.0.255 area 0
!
ip route 0.0.0.0 0.0.0.0 10.0.24.2
no ip http server
no ip http secure-server
R6:
interface Loopback0
ip address 6.6.6.6 255.255.255.255
!
interface Loopback6
ip address 192.168.6.254 255.255.255.0
ip ospf network point-to-point
!
interface FastEthernet0/0
ip address 10.0.46.6 255.255.255.0
duplex auto
speed auto
!
router ospf 1
log-adjacency-changes
network 10.0.46.0 0.0.0.255 area 0
network 192.168.6.0 0.0.0.255 area 0
转载于:https://blog.51cto.com/ringwater/1841525
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