RE: Virtual Link Authentication

From: Jason Sinclair (sinclairj@xxxxxxxxxxxxxxx)
Date: Mon Oct 29 2001 - 21:34:40 GMT-3


   
I believe that you need the following:

Ip ospf authentication message-digest

Under the interface as well.

Regards,

Jason Sinclair
Network Support Manager
POWERTEL Limited
Level 11, 55 Clarence Street, SYDNEY
Phone: 61-2-8264-3820
Fax: 61-2-9279-2604
Mobile: 0416 105 858
jasons@powertel.net.au

                -----Original Message-----
                From: Eric Sarraf [mailto:esarraf@cisco.com]
                Sent: Tuesday, 30 October 2001 10:08
                To: Jon CCIE-study Account
                Cc: ccielab@groupstudy.com; anawaz@cisco.com
                Subject: Re: Virtual Link Authentication

                Here are the configs. Area 0 resides on R5's Serial0. Area
45 is on R4's
                Ethernet0 and R5's Ethernet 1.

                Thanks guys for the extra effort.

                R4500M-3A-R5#sh run
                Building configuration...

                Current configuration : 3653 bytes
                !
                version 12.1
                service timestamps debug datetime
                service timestamps log datetime
                no service password-encryption
                !
                hostname R4500M-3A-R5
                !
                enable password ww
                !
                ip subnet-zero
                no ip finger
                no ip domain-lookup
                !
                !
                source-bridge ring-group 2000
                source-bridge transparent 2000 100 1 10
                dlsw local-peer peer-id 5.5.5.5
                dlsw remote-peer 0 tcp 3.3.3.3 host-netbios-out test2
                dlsw icanreach mac-address 4000.2000.1000 mask
ffff.ffff.ffff
                dlsw bridge-group 1
                !
                !
                interface Loopback0
                  ip address 5.5.5.5 255.255.255.255
                !
                interface Loopback1
                  ip address 160.5.65.1 255.255.255.0
                  ip ospf network point-to-point
                !
                interface Loopback2
                  ip address 160.5.66.1 255.255.255.0
                  ip ospf network point-to-point
                !
                interface Loopback3
                  ip address 160.5.67.1 255.255.255.0
                !
                interface Loopback4
                  ip address 160.5.68.1 255.255.255.0
                !
                interface Loopback5
                  no ip address
                !
                interface Loopback21
                  ip address 21.21.21.21 255.255.255.255
                !
                interface Ethernet0
                  ip address 160.5.53.5 255.255.255.0
                  media-type 10BaseT
                !
                interface Ethernet1
                  ip address 160.5.54.5 255.255.255.0
                  media-type 10BaseT
                  bridge-group 10
                !
                interface Serial0
                  ip address 160.5.1.5 255.255.255.248
                  ip access-group 5 in
                  encapsulation frame-relay
                  ip ospf message-digest-key 1 md5 cisco
                  ip ospf network non-broadcast
                  ip ospf priority 10
                  no fair-queue
                  clockrate 64000
                  frame-relay map ip 160.5.1.1 201 broadcast
                  frame-relay map ip 160.5.1.3 100 broadcast
                  no frame-relay inverse-arp
                !
                interface Serial1
                  no ip address
                  shutdown
                !
                interface TokenRing0
                  ip address 160.5.5.5 255.255.255.0
                  ring-speed 16
                  source-bridge 1 1 2000
                  source-bridge spanning
                  netbios output-access-filter host test
                !
                interface TokenRing1
                  ip address 160.1.45.1 255.255.255.0
                  shutdown
                  ring-speed 16
                !
                router ospf 1
                  log-adjacency-changes
                  area 0 authentication message-digest
                  area 45 virtual-link 4.4.4.4 authentication message-digest
                  area 45 virtual-link 4.4.4.4 message-digest-key 1 md5
cisco
                  area 55 range 160.5.64.0 255.255.248.0
                  redistribute connected subnets
                  network 160.5.1.0 0.0.0.255 area 0
                  network 160.5.53.0 0.0.0.255 area 5
                  network 160.5.54.0 0.0.0.255 area 45
                  network 160.5.64.0 0.0.7.255 area 55
                  neighbor 160.5.1.1
                  neighbor 160.5.1.3
                !
                router bgp 65050
                  no synchronization
                  bgp log-neighbor-changes
                  bgp confederation identifier 5000
                  bgp confederation peers 65040
                  network 5.5.5.5 mask 255.255.255.255
                  neighbor 1.1.1.1 remote-as 65050
                  neighbor 1.1.1.1 update-source Loopback0
                  neighbor 1.1.1.1 route-reflector-client
                  neighbor 3.3.3.3 remote-as 65050
                  neighbor 3.3.3.3 update-source Loopback0
                  neighbor 3.3.3.3 route-reflector-client
                  neighbor 4.4.4.4 remote-as 65040
                  neighbor 4.4.4.4 ebgp-multihop 255
                  neighbor 4.4.4.4 update-source Loopback0
                !
                ip classless
                no ip http server
                !
                access-list 5 deny 160.5.68.0 0.0.0.255
                access-list 5 permit any
                access-list 10 permit 160.5.65.0 0.0.0.255
                access-list 11 deny 160.5.68.0 0.0.0.255
                access-list 11 permit any
                access-list 165 deny ip host 160.5.68.0 255.255.255.0
0.0.0.255
                access-list 165 permit ip any any
                access-list 200 permit 0x0000 0x0D0D
                access-list 200 deny 0x0000 0xFFFF
                route-map supp permit 10
                  match ip address 10
                !
                route-map suppress permit 10
                  match ip address 165
                !
                bridge 1 protocol ieee
                bridge 10 protocol ieee
                !
                line con 0
                  exec-timeout 0 0
                  transport input none
                line aux 0
                line vty 0 4
                  password ww
                  login
                !
                end

                R2514-4M-R4#sh run
                Building configuration...

                Current configuration:
                !
                version 12.0
                service timestamps debug uptime
                service timestamps log uptime
                no service password-encryption
                !
                hostname R2514-4M-R4
                !
                !
                username R2514-4K-R1 password 0 cisco
                username bangalore password 0 cisco
                ip subnet-zero
                no ip domain-lookup
                isdn switch-type basic-ni
                !
                !
                !
                interface Loopback0
                  ip address 4.4.4.4 255.255.255.255
                  no ip directed-broadcast
                !
                interface Ethernet0
                  ip address 160.5.54.4 255.255.255.0
                  no ip directed-broadcast
                !
                interface Serial0
                  ip address 150.100.1.5 255.255.255.0
                  no ip directed-broadcast
                  no ip mroute-cache
                  no fair-queue
                !
                interface Serial1
                  no ip address
                  no ip directed-broadcast
                  shutdown
                !
                interface BRI0
                  ip address 160.5.14.2 255.255.255.252
                  no ip directed-broadcast
                  encapsulation ppp
                  dialer idle-timeout 300
                  dialer map ip 160.5.14.1 name bangalore broadcast 4349062
                  dialer-group 1
                  isdn switch-type basic-ni
                  isdn spid1 40843490640101 4349064
                  isdn spid2 40843490650101 4349065
                  no peer neighbor-route
                  ppp authentication chap callin
                  ppp chap hostname mumbai
                  ppp chap password 7 060506324F41
                  ppp multilink
                !
                router ospf 1
                  area 45 virtual-link 160.5.68.1 authentication
message-digest
                  area 45 virtual-link 160.5.68.1 message-digest-key 1 md5
cisco
                  redistribute connected subnets
                  redistribute rip subnets
                  network 150.100.1.5 0.0.0.0 area 4
                  network 160.5.14.2 0.0.0.0 area 14
                  network 160.5.54.0 0.0.0.255 area 45
                !
                router rip
                  network 150.100.0.0
                  distribute-list 3 out ospf 1
                  distribute-list 4 out Serial0
                !
                router bgp 65040
                  no synchronization
                  bgp confederation identifier 5000
                  bgp confederation peers 65050
                  network 4.4.4.4 mask 255.255.255.255
                  neighbor 5.5.5.5 remote-as 65050
                  neighbor 5.5.5.5 ebgp-multihop 3
                  neighbor 5.5.5.5 update-source Loopback0
                !
                ip classless
                !
                access-list 2 deny 160.5.0.0
                access-list 2 deny 150.100.0.0 0.0.255.255
                access-list 2 permit any
                access-list 3 permit 195.1.0.0 0.0.30.0
                access-list 4 permit 160.5.0.0 0.0.255.255
                access-list 105 permit ip any host 255.255.255.255
                dialer-list 1 protocol ip permit
                route-map RIP-OSPF permit 10
                  match ip address 3
                !
                line con 0
                  session-timeout 500
                  exec-timeout 0 0
                  transport input none
                line aux 0
                line vty 0 4
                  password cisco
                  login
                !
                end

                R4 debug message:
                03:26:42: OSPF: Rcv pkt from 160.5.54.5, Ethernet0 :
Mismatch
                Authentication Key - Message Digest Key 1
                03:26:46: OSPF: Send with youngest Key 1

                R5 debug message:
                *Nov 22 17:56:56: OSPF: Rcv pkt from 160.5.54.4, Ethernet1 :
Mismatch
                Authentication Key - Message Digest Key 1
                *Nov 22 17:56:56: OSPF: Send with youngest Key 1

                At 10:10 PM 10/29/2001 +0100, Jon CCIE-study Account wrote:
>Hi Eric
>
>If you have tried to enable MD authentication on BOTH
routers could you
>provide us with the configurations and debugs from both
routers from the
>non-working example?
>
>best regard,
>Jon
>----- Original Message -----
>From: "Eric Sarraf" <esarraf@cisco.com>
>To: <ccielab@groupstudy.com>
>Sent: Monday, October 29, 2001 6:50 PM
>Subject: Virtual Link Authentication
>
>
> > I have enabled message-digest authentication on area 0.
There is also
> > virtual link between my two routers R4 and R5 residing
on area 45 (R5
>also
> > resides on area 0). I have also enabled authentication
on the virtual link
> > . Things work fine with below configurations. However,
if I replace "area
> > 45 virtual-link 4.4.4.4 authentication" with "area 45
virtual-link 4.4.4.4
> > authentication message digest" I get the following error
on both routers:
> >
> > 1w1d: OSPF: Rcv pkt from 160.5.54.5, Ethernet0 :
Mismatch Authentication
> > Key - Message Digest Key 1
> >
> > Why can not I have "message-digest" on my viurtual link
statement?
> >
> > Thanks, Eric
> >
> > R5 router:
> >
> > router ospf 1
> > log-adjacency-changes
> > area 0 authentication message-digest
> > area 45 virtual-link 4.4.4.4 authentication
> > area 45 virtual-link 4.4.4.4 message-digest-key 1 md5
cisco
> > area 55 range 160.5.64.0 255.255.248.0
> > redistribute connected subnets
> > network 160.5.1.0 0.0.0.255 area 0
> > network 160.5.53.0 0.0.0.255 area 5
> > network 160.5.54.0 0.0.0.255 area 45
> > network 160.5.64.0 0.0.7.255 area 55
> > neighbor 160.5.1.1
> > neighbor 160.5.1.3
> >
> >
> > R4 router:
> >
> > router ospf 1
> > area 45 virtual-link 160.5.68.1 authentication
> > area 45 virtual-link 160.5.68.1 message-digest-key 1
md5 cisco
> > redistribute connected subnets
> > redistribute rip subnets
> > network 150.100.1.5 0.0.0.0 area 4
> > network 160.5.14.2 0.0.0.0 area 14
> > network 160.5.54.0 0.0.0.255 area 45
        



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