RE: OSPF Virtual-Link

From: Jenkins, Buddy (buddy.jenkins@xxxxxxxx)
Date: Sun Mar 10 2002 - 21:27:26 GMT-3


   
Carl,

You need to add authentication to your virtual link because area 0 is using aut
htenication Try This

area 1 virtual-link 135.14.4.4 authentication message-digest
area 1 virtual-link 135.14.4.4 message-digest-key 1 md5 7 104D000A0618

You will need to configure this on both sides of your virtual link.

Buddy

-----Original Message-----
From: Carl Phelan [mailto:carlphelan@hotmail.com]
Sent: Monday, March 11, 2002 9:07 AM
To: ccielab@groupstudy.com
Subject: OSPF Virtual-Link

Hi All,

I have configured OSPF Type II authentication in area 0 but now my
virtual-link has gone down. The router R2 is physically connected to
area 0 and uses the transit area 1 for the virtual link to R4. The
output for the virtual link status shows as follows:

r2#sh ip ospf v
Virtual Link OSPF_VL0 to router 135.14.4.4 is up
  Run as demand circuit
  DoNotAge LSA allowed.
  Transit area 1, via interface Ethernet0, Cost of using 10
  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
  Message digest authentication enabled
      No key configured, using default key id 0

Yet I have not configured any authentication neither on area 1 nor the
virtual link so why is it looking for any? I include the configs for R2
and R4. Many thanks

R2

Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname r2
!
enable password 7 02050D480809
!
username alll password 7 11
ip subnet-zero
ipx routing 0002.0002.0002
!
!
!
interface Loopback0
 ip address 135.14.2.2 255.255.255.0
 no ip directed-broadcast
!
interface Ethernet0
 ip address 135.14.220.1 255.255.255.0
 no ip directed-broadcast
 ipx network 60
!
interface Serial0
 no ip address
 no ip directed-broadcast
 no ip mroute-cache
 shutdown
!
interface Serial1
 ip address 135.14.190.2 255.255.255.0
 no ip directed-broadcast
 encapsulation frame-relay
 ip ospf message-digest-key 1 md5 7 104D000A0618
 ip ospf priority 0
 logging event subif-link-status
 logging event dlci-status-change
 ipx network 34
 no arp frame-relay
 frame-relay map ipx 34.0005.0005.0005 111 broadcast
 frame-relay map ip 135.14.190.1 111 broadcast
 frame-relay map ip 135.14.190.3 111 broadcast
 frame-relay map ipx 34.0003.0003.0003 111 broadcast
 no frame-relay inverse-arp
!
interface BRI0
 no ip address
 no ip directed-broadcast
 shutdown
!
router ospf 1
 area 0 authentication message-digest
 area 1 virtual-link 135.14.4.4
 network 135.14.190.2 0.0.0.0 area 0
 network 135.14.220.1 0.0.0.0 area 1
!
ip classless
!
logging trap critical
logging 150.14.1.200
!
!
ipx router eigrp 1
 network 34
!
!
ipx router rip
 no network 34
!
!
!
alias exec ospf sh ip ospf ne
!
line con 0
 exec-timeout 0 0
 transport input none
line aux 0
line vty 0 4
 password 7 13061E010803
 login
!
end

R4
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r4
!
enable password cisco
!
ip subnet-zero
ipx routing 0004.0004.0004
!
!
!
interface Loopback0
 ip address 135.14.4.4 255.255.255.0
 no ip directed-broadcast
!
interface Ethernet0
 ip address 135.14.220.2 255.255.255.0
 no ip directed-broadcast
!
interface Serial0
 no ip address
 no ip directed-broadcast
 no ip mroute-cache
 shutdown
 no fair-queue
!
interface Serial1
 ip address 135.14.170.2 255.255.255.0
 no ip directed-broadcast
 encapsulation frame-relay
 logging event subif-link-status
 logging event dlci-status-change
 ipx network 50
 no arp frame-relay
 frame-relay map ip 135.14.170.1 131 broadcast
 no frame-relay inverse-arp
!
interface BRI0
 no ip address
 no ip directed-broadcast
 shutdown
!
router ospf 1
 area 1 virtual-link 135.14.2.2
 network 135.14.4.4 0.0.0.0 area 55
 network 135.14.220.2 0.0.0.0 area 1
!
ip classless
!
!
!
!
!
line con 0
 exec-timeout 0 0
 transport input none
line aux 0
line vty 0 4
 password cisco
 login
!
end



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