From: Chris Larson (clarson52@xxxxxxxx)
Date: Mon Dec 03 2001 - 19:48:53 GMT-3
I believe it may be because when you use PPP both routers will install a
host route /32 to the neighbor. When the ISDN goes down the /32 route will
dissappear and OSPF will see this topology change bringin the ISDN link back
up to echange route informatio where once again the peer route is installed.
Try putting no peer neighbor-route under the bri interface.
----- Original Message -----
From: "DAN DORTON" <DHSTS68@dhs.state.il.us>
To: <ccielab@groupstudy.com>
Sent: Monday, December 03, 2001 11:35 AM
Subject: CCbootcamp lab 8A.
> Anyone successfully get the OSPF demand circuit working here? I have
> tried everything, but I am still processing 224.0.0.5's across the BRI
> in both directions.
>
> I finally gave up & looked at the configs that CC sent, but they match
> mine almost perfectly!
>
> What the????
>
> version 12.2
> service timestamps debug uptime
> service timestamps log uptime
> no service password-encryption
> !
> hostname r6
> !
> !
> username r5 password 0 cisco
> ip subnet-zero
> no ip domain-lookup
> !
> ip ssh time-out 120
> ip ssh authentication-retries 3
> isdn switch-type basic-ni
> !
> !
> !
> !
> interface Loopback0
> ip address 137.20.60.1 255.255.240.0
> !
> interface Ethernet0
> ip address 137.20.64.6 255.255.240.0
> ip ospf priority 255
> standby ip 137.20.64.8
> standby timers 5 10
> standby authentication cisco
> !
> interface Serial0
> ip address 137.20.86.1 255.255.255.0
> clockrate 2000000
> !
> interface BRI0
> bandwidth 64
> ip address 137.20.224.6 255.255.240.0
> encapsulation ppp
> ip ospf network point-to-point
> ip ospf demand-circuit
> dialer map ip 137.20.224.5 name r5 broadcast 18008358662
> dialer-group 1
> isdn switch-type basic-ni
> isdn spid1 0835866101 8358661
> isdn spid2 0835866301 8358663
> no cdp enable
> ppp authentication chap
> !
> router ospf 1
> log-adjacency-changes
> redistribute connected metric 20 subnets route-map filtercon
> redistribute bgp 2 metric 20 subnets route-map bgp2ospf
> network 137.20.48.0 0.0.15.255 area 0
> network 137.20.64.0 0.0.15.255 area 0
> network 137.20.224.0 0.0.15.255 area 0
> !
> router bgp 2
> bgp log-neighbor-changes
> network 137.20.86.0 mask 255.255.255.0
> redistribute ospf 1 route-map ospf2bgp
> neighbor 137.20.25.2 remote-as 2
> neighbor 137.20.25.2 update-source Loopback0
> neighbor 137.20.86.2 remote-as 1
> neighbor 137.20.86.2 default-originate
> no auto-summary
> !
> ip classless
> no ip http server
> ip pim bidir-enable
> !
> access-list 1 permit 137.20.86.0 0.0.0.255
> access-list 10 permit 172.168.70.0 0.0.0.255
> access-list 10 permit 137.20.10.0 0.0.0.255
> access-list 10 permit 160.0.0.0 0.255.255.255
> access-list 20 permit 137.20.224.0 0.0.0.255
> access-list 30 permit 137.20.81.0 0.0.0.255
> access-list 30 permit 137.20.82.0 0.0.0.255
> access-list 40 permit any
> dialer-list 1 protocol ip permit
> route-map ospf2bgp deny 10
> match ip address 20
> !
> route-map ospf2bgp permit 20
> match route-type internal
> !
> route-map ospf2bgp deny 30
> match ip address 10
> !
> route-map ospf2bgp permit 40
> match route-type external
> !
> route-map bgp2ospf deny 10
> match ip address 30
> !
> route-map bgp2ospf permit 20
> match ip address 40
> !
> route-map filtercon permit 10
> match ip address 1
> !
> !
> line con 0
> exec-timeout 0 0
> logging synchronous
> line vty 0 4
> exec-timeout 0 0
> login
> !
> end
>
> r6#sh ip ospf int bri 0
> BRI0 is up, line protocol is up (spoofing)
> Internet Address 137.20.224.6/20, Area 0
> Process ID 1, Router ID 137.20.60.1, Network Type POINT_TO_POINT,
> Cost: 1562
> Configured as demand circuit.
> Run as demand circuit.
> DoNotAge LSA allowed.
> Transmit Delay is 1 sec, State POINT_TO_POINT,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> Hello due in 00:00:01
> Index 3/3, flood queue length 0
> Next 0x0(0)/0x0(0)
> Last flood scan length is 2, maximum is 2
> Last flood scan time is 0 msec, maximum is 8 msec
> Neighbor Count is 1, Adjacent neighbor count is 1
> Adjacent with neighbor 137.20.240.1 (Hello suppressed)
> Suppress hello for 1 neighbor(s)
>
> r6#sh ip ospf ne
>
> Neighbor ID Pri State Dead Time Address
> Interface
> 137.20.240.1 1 FULL/ - - 137.20.224.5 BRI0
> 137.20.240.1 1 FULL/BDR 00:00:39 137.20.64.5
> Ethernet0
>
> version 11.3
> service timestamps debug uptime
> service timestamps log uptime
> no service password-encryption
> !
> hostname r5
> !
> !
> username r6 password 0 cisco
> memory-size iomem 15
> ip subnet-zero
> no ip domain-lookup
> isdn switch-type basic-ni
> !
> !
> !
> !
> !
> !
> process-max-time 200
> !
> interface Loopback0
> ip address 137.20.240.1 255.255.240.0
> !
> interface BRI0/0
> ip address 137.20.224.5 255.255.240.0
> encapsulation ppp
> ip ospf demand-circuit
> bandwidth 64
> dialer map ip 137.20.224.6 name r6 broadcast 18008358661
> dialer-group 1
> isdn switch-type basic-ni
> isdn spid1 0835866201 8358662
> isdn spid2 0835866401 8358664
> no cdp enable
> ppp authentication chap
> hold-queue 75 in
> !
> interface Ethernet0/0
> ip address 137.20.64.5 255.255.240.0
> no ip redirects
> standby timers 5 10
> standby priority 200
> standby preempt
> standby authentication cisco
> standby ip 137.20.64.8
> !
> interface Serial0/0
> no ip address
> encapsulation frame-relay
> no ip mroute-cache
> keepalive 15
> no fair-queue
> no frame-relay inverse-arp
> frame-relay lmi-type ansi
> !
> interface Serial0/0.1 multipoint
> ip address 137.20.100.34 255.255.255.224
> ip ospf network point-to-multipoint
> frame-relay map ip 137.20.100.33 501 broadcast
> frame-relay map ip 137.20.100.34 501 broadcast
> frame-relay map ip 137.20.100.35 503 broadcast
> no frame-relay inverse-arp
> !
> interface Serial0/0.2 point-to-point
> ip address 137.20.200.17 255.255.255.240
> frame-relay interface-dlci 504
> !
> interface TokenRing0/0
> no ip address
> shutdown
> ring-speed 16
> !
> interface Serial0/1
> ip address 137.20.25.1 255.255.255.0
> clockrate 2000000
> !
> router ospf 1
> redistribute igrp 1 metric 100 metric-type 1 subnets route-map
> igrp2ospf
> network 137.20.25.0 0.0.0.255 area 2
> network 137.20.64.0 0.0.15.255 area 0
> network 137.20.100.32 0.0.0.31 area 1
> network 137.20.224.0 0.0.15.255 area 0
> network 137.20.240.0 0.0.15.255 area 0
> area 1 virtual-link 200.200.100.1
> area 1 virtual-link 137.20.33.33
> !
> router igrp 1
> redistribute ospf 1 metric 1544 20000 255 1 1500
> passive-interface BRI0/0
> passive-interface Ethernet0/0
> passive-interface Serial0/0.1
> passive-interface Serial0/1
> network 137.20.0.0
> !
> ip classless
> ip route 137.20.81.0 255.255.255.0 137.20.60.1
> ip route 137.20.82.0 255.255.255.0 137.20.60.1
> !
> access-list 1 permit 137.20.100.32 0.0.0.31
> access-list 1 permit 137.20.240.0 0.0.0.255
> access-list 1 permit 137.20.64.0 0.0.0.255
> access-list 1 permit 137.20.224.0 0.0.0.255
> access-list 2 permit any
> dialer-list 1 protocol ip permit
> route-map igrp2ospf deny 10
> match ip address 1
> !
> route-map igrp2ospf permit 20
> match ip address 2
> !
> !
> line con 0
> exec-timeout 0 0
> logging synchronous
> line aux 0
> line vty 0 4
> exec-timeout 0 0
> login
> !
> no scheduler allocate
> end
>
> r5#sh ip ospf int bri 0/0
> BRI0/0 is up, line protocol is up (spoofing)
> Internet Address 137.20.224.5/20, Area 0
> Process ID 1, Router ID 137.20.240.1, Network Type POINT_TO_POINT,
> Cost: 1562
> Run as demand circuit.
> DoNotAge LSA allowed.
> Transmit Delay is 1 sec, State POINT_TO_POINT,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> Hello due in 00:00:02
> Neighbor Count is 1, Adjacent neighbor count is 1
> Adjacent with neighbor 137.20.60.1 (Hello suppressed)
> Suppress hello for 1 neighbor(s)
>
> r5#sh ip ospf ne
>
> Neighbor ID Pri State Dead Time Address
> Interface
> 137.20.60.1 1 FULL/ - 00:00:39 137.20.224.6
> BRI0/0
> 137.20.60.1 255 FULL/DR 00:00:35 137.20.64.6
> Ethernet0/0
> 200.200.100.1 1 FULL/ - 00:01:59 137.20.100.33
> Serial0/0.1
> 137.20.33.33 1 FULL/ - 00:01:55 137.20.100.35
> Serial0/0.1
> 137.20.25.2 1 FULL/ - 00:00:38 137.20.25.2
> Serial0/1
>
> Thanks much!
>
> Dan
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:32:36 GMT-3