From: Roberto Adjakou (radjakou@cfao.sn)
Date: Fri Aug 22 2003 - 09:53:00 GMT-3
Try:
1/ put loop int on R4 in area 0
2/ I'm not sure but it sems that when configuring ip ospf net p2m, you don't need to configure also ip ospf pri
Cordialement/Best regards;
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
Roberto Adjakou
E-mail : RAdjakou@cfao.sn
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
-----Message d'origine-----
De : Waheed Mir [mailto:ccnp2ccie@yahoo.com]
Envoyi : vendredi 22 ao{t 2003 07:33
@ : Waheed Mir; ccielab@groupstudy.com
Objet : Re: OSPF Virtual Link Flapping
Here are the configs....R2 the HUB and R4 and R6 SPOKES ...
-thanx
**********R2, R4 and R6 Configs****************
R2#
R2#sh run
R2#sh running-config
Building configuration...
Current configuration : 1600 bytes
!
version 12.1
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R2
!
!
!
!
!
!
ip subnet-zero
no ip domain-lookup
!
!
!
!
interface Loopback0
ip address 189.18.2.2 255.255.255.0
ip ospf network point-to-point
!
interface Ethernet0
no ip address
shutdown
!
interface Ethernet1
ip address 189.18.23.2 255.255.255.224
ip ospf priority 100
!
interface Serial0
no ip address
encapsulation frame-relay
frame-relay lmi-type ansi
!
interface Serial0.1 multipoint
ip address 189.18.110.2 255.255.255.248
ip ospf authentication message-digest
ip ospf network point-to-multipoint
ip ospf dead-interval 25
ip ospf priority 0
frame-relay map ip 189.18.110.4 204 broadcast
frame-relay map ip 189.18.110.6 206 broadcast
no frame-relay inverse-arp
!
interface Serial0.2 multipoint
ip address 189.18.100.2 255.255.255.248
ip ospf priority 0
frame-relay map ip 189.18.100.3 203 broadcast
frame-relay map ip 189.18.100.6 203
no frame-relay inverse-arp
!
interface Serial1
ip address 189.18.12.2 255.255.255.0
shutdown
!
router ospf 77
router-id 189.18.2.2
log-adjacency-changes
area 0 authentication message-digest
area 246 virtual-link 189.18.6.6 message-digest-key 1 md5 cisco
area 246 virtual-link 189.18.4.4 message-digest-key 1 md5 cisco
network 189.18.2.0 0.0.0.255 area 23
network 189.18.23.0 0.0.0.31 area 23
network 189.18.100.0 0.0.0.7 area 236
network 189.18.110.0 0.0.0.7 area 246
!
ip classless
ip http server
!
!
line con 0
exec-timeout 0 0
--More--
R4#sh running-config
Building configuration...
Current configuration : 1720 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R4
!
!
!
!
!
!
memory-size iomem 15
ip subnet-zero
no ip finger
no ip domain-lookup
!
!
!
!
!
!
!
!
interface Loopback0
ip address 189.18.4.4 255.255.255.0
ip ospf network point-to-point
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
!
interface FastEthernet0/0.45
encapsulation dot1Q 45
ip address 189.18.45.4 255.255.255.0
no ip redirects
ip ospf message-digest-key 1 md5 cisco
!
interface FastEthernet0/0.46
encapsulation dot1Q 46
ip address 171.89.18.4 255.255.255.0
no ip redirects
ip ospf message-digest-key 1 md5 cisco
!
interface Serial0/0
ip address 189.18.110.4 255.255.255.248
encapsulation frame-relay
ip split-horizon
ip ospf authentication message-digest
ip ospf network point-to-multipoint
ip ospf dead-interval 25
ip ospf priority 0
no fair-queue
frame-relay map ip 189.18.110.6 402
frame-relay map ip 189.18.110.2 402 broadcast
no frame-relay inverse-arp
frame-relay lmi-type ansi
!
interface FastEthernet0/1
ip address 189.18.44.4 255.255.255.0
ip ospf message-digest-key 1 md5 cisco
duplex auto
speed auto
!
interface Serial0/1
no ip address
shutdown
!
router ospf 77
--More--
router-id 189.18.4.4
log-adjacency-changes
area 0 authentication message-digest
area 246 virtual-link 189.18.2.2 message-digest-key 1 md5 cisco
network 171.89.18.0 0.0.0.255 area 0
network 189.18.4.0 0.0.0.255 area 246
network 189.18.44.0 0.0.0.255 area 0
network 189.18.45.0 0.0.0.255 area 0
network 189.18.110.0 0.0.0.7 area 246
!
ip classless
ip http server
!
-------
R6#sh running-config
Building configuration...
Current configuration : 1900 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R6
!
!
username R3 password 0 cisco
ip subnet-zero
no ip domain-lookup
!
isdn switch-type basic-net3
!
!
!
interface Loopback0
ip address 189.18.6.6 255.255.255.0
ip ospf network point-to-point
!
interface Ethernet0
ip address 171.89.18.6 255.255.255.0
ip ospf message-digest-key 1 md5 cisco
ip ospf priority 100
!
interface Serial0
no ip address
encapsulation frame-relay
frame-relay lmi-type ansi
!
interface Serial0.1 multipoint
ip address 189.18.110.6 255.255.255.248
ip ospf authentication message-digest
ip ospf network point-to-multipoint
ip ospf dead-interval 25
ip ospf priority 0
frame-relay map ip 189.18.110.4 602
frame-relay map ip 189.18.110.2 602 broadcast
no frame-relay inverse-arp
!
interface Serial0.2 multipoint
ip address 189.18.100.6 255.255.255.248
ip ospf priority 0
frame-relay map ip 189.18.100.2 603
frame-relay map ip 189.18.100.3 603 broadcast
no frame-relay inverse-arp
!
interface Serial1
no ip address
shutdown
!
interface BRI0
ip address 189.18.36.2 255.255.255.252
encapsulation ppp
shutdown
dialer idle-timeout 0
dialer map ip 189.18.36.1 name R3 broadcast
dialer load-threshold 1 either
dialer-group 1
isdn switch-type basic-ni
no cdp enable
ppp authentication chap
ppp multilink
!
router ospf 77
router-id 189.18.6.6
log-adjacency-changes
area 0 authentication message-digest
area 246 virtual-link 189.18.2.2 message-digest-key 1 md5 cisco
network 171.89.18.0 0.0.0.255 area 0
network 189.18.6.0 0.0.0.255 area 236
network 189.18.36.0 0.0.0.3 area 236
network 189.18.100.0 0.0.0.7 area 236
network 189.18.110.0 0.0.0.7 area 246
!
ip classless
ip http server
Waheed Mir <ccnp2ccie@yahoo.com> wrote:
Hi,
I'm using md5 authentication for virual links across transit area over NBMA, but i cannot figure out why my Virual Links are flapping.. Please see the event trace below..
-thanx
WAM
01:34:45: %OSPF-5-ADJCHG: Process 77, Nbr 189.18.2.2 on Serial0/0 from FULL to DOWN, Neighbor Down: Dead timer expired
01:34:52: %OSPF-5-ADJCHG: Process 77, Nbr 189.18.2.2 on Serial0/0 from LOADING to FULL, Loading Done
01:35:03: %OSPF-5-ADJCHG: Process 77, Nbr 189.18.2.2 on OSPF_VL0 from LOADING to FULL, Loading Done
R4#sh ip ospf virtual-links
Virtual Link OSPF_VL0 to router 189.18.2.2 is up
Run as demand circuit
DoNotAge LSA allowed.
Transit area 246, via interface Serial0/0, Cost of using 64
Transmit Delay is 1 sec, State POINT_TO_POINT,
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:08
Adjacency State FULL (Hello suppressed)
Index 2/3, retransmission queue length 0, number of retransmission 16
First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0)
Last retransmission scan length is 1, maximum is 5
Last retransmission scan time is 0 msec, maximum is 0 msec
Message digest authentication enabled
Youngest key id is 1
R4#
01:35:45: %OSPF-5-ADJCHG: Process 77, Nbr 189.18.2.2 on Serial0/0 from FULL to DOWN, Neighbor Down: Dead timer expired
01:35:52: %OSPF-5-ADJCHG: Process 77, Nbr 189.18.2.2 on Serial0/0 from LOADING to FULL, Loading Done
R4#sh ip ospf virtual-links
Virtual Link OSPF_VL0 to router 189.18.2.2 is up
Run as demand circuit
DoNotAge LSA allowed.
Transit area 246, via interface Serial0/0, Cost of using 64
Transmit Delay is 1 sec, State POINT_TO_POINT,
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:07
Adjacency State FULL (Hello suppressed)
Index 2/3, retransmission queue length 6, number of retransmission 17
First 0x81941A30(1874)/0x0(0) Next 0x8194122C(1879)/0x0(0)
Last retransmission scan length is 5, maximum is 5
Last retransmission scan time is 0 msec, maximum is 0 msec
Link State retransmission due in 20 msec
Message digest authentication enabled
Youngest key id is 1
R4#
01:36:03: %OSPF-5-ADJCHG: Process 77, Nbr 189.18.2.2 on OSPF_VL0 from LOADING to FULL, Loading Done
---------------------------------
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This archive was generated by hypermail 2.1.4 : Tue Sep 02 2003 - 18:54:04 GMT-3