From: CCIE-Maillist (CCIE-Maillist@xxxxxxxxxx)
Date: Sun May 19 2002 - 21:51:33 GMT-3
Hello Group,
Does anyone have any suggestions as to the reason for this OSPF behavior?
I have 3 routers. One router (router 5) is connected to area 0. The other two r
outers (r3 & r1) are connected to r5 via frame relay, in area 1, AND connected
to each other via ethernet in area 2.
This lab says that R5 should prefer the ethernet backbone routes between r1 and
r3 via r3, not r1. To do this, I modified the cost of the ethernet. The lab as
k says that r5 should be the DR for area 0. To to do this, I set the ospf prio
to 0 on the frame links on each of the remote routers (r1 & r3). Everything see
ms fine. There is a virtual link on each of the routers (r1 + r3) to r5. The li
nk on r3 always comes up fine but the link on r1 will only come up if I shutdow
n the serial (fram) on r3, reload ospf on r1, let it estab its adj. and virtual
link, then bring up the serial on r3 and let it come up. If r3 is up first, th
e virtual interface on r1 will never establish.
Below, are the configs for each of the 3 routers. Thanks- David
-------------------------R5
r5#s
Building configuration...
Current configuration : 6166 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r5
!
enable password cisco
!
ip subnet-zero
!
!
no ip domain-lookup
!
ip audit notify log
ip audit po max-events 100
ip ssh time-out 120
ip ssh authentication-retries 3
ipx routing 0050.736c.2dff
frame-relay switching
!
isdn switch-type basic-ni
call rsvp-sync
!
!
!
!
!
!
!
dlsw local-peer peer-id 200.150.150.5
dlsw remote-peer 0 tcp 200.100.100.14
dlsw remote-peer 0 tcp 150.10.1.1
dlsw remote-peer 0 tcp 150.10.3.3
!
interface Loopback0
ip address 150.10.5.5 255.255.255.0
ip ospf network point-to-point
!
interface Loopback1
ip address 200.150.150.5 255.255.255.0
ip ospf network point-to-point
!
interface Ethernet0/0
ip address 150.10.50.5 255.255.255.0
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 cisco
half-duplex
ipx network 50
no cdp enable
!
interface BRI0/0
ip address 150.10.65.1 255.255.255.252
encapsulation ppp
ip ospf cost 64
ip ospf demand-circuit
dialer map ip 150.10.65.2 name r6 broadcast 8358662
dialer map ip 150.10.65.2 name r6 broadcast 8358664
dialer load-threshold 1 either
dialer-group 1
isdn switch-type basic-ni
isdn spid1 0835866101 8358661
isdn spid2 0835866301 8358663
no cdp enable
ppp callback request
ppp authentication pap callin
ppp pap sent-username cisco6 password 7 104D000A0618
ppp multilink
!
interface Serial0/0
no ip address
encapsulation frame-relay
!
interface Serial0/0.1 point-to-point
backup interface BRI0/0
ip address 150.10.60.5 255.255.255.0
ip ospf network point-to-multipoint
ip ospf priority 200
ipx access-group no-novs1 out
ipx network 60
no cdp enable
frame-relay interface-dlci 101
!
interface Serial0/0.2 multipoint
ip address 150.10.10.5 255.255.255.240
ip ospf hello-interval 10
ip ospf priority 200
ipx network 10
ipx bandwidth-percent eigrp 10 25
frame-relay map ipx 10.0010.7b36.f01a 102 broadcast
frame-relay map ipx 10.0050.736c.2dff 103 broadcast
frame-relay map ip 150.10.10.1 102 broadcast
frame-relay map ip 150.10.10.3 103 broadcast
frame-relay map ip 150.10.10.5 102 broadcast
frame-relay map ipx 10.0010.7b37.d28f 103 broadcast
!
interface Serial0/0.3 point-to-point
ip address 150.10.40.5 255.255.255.0
ipx network 40
no cdp enable
frame-relay interface-dlci 104
!
interface Serial0/1
no ip address
shutdown
no cdp enable
!
interface Serial1/0
no ip address
shutdown
no cdp enable
!
interface Serial1/1
no ip address
encapsulation frame-relay
clockrate 64000
frame-relay intf-type dce
frame-relay route 301 interface Serial1/4 103
!
interface Serial1/2
no ip address
encapsulation frame-relay
clockrate 56000
frame-relay intf-type dce
frame-relay route 100 interface Serial1/4 101
!
interface Serial1/3
no ip address
encapsulation frame-relay
clockrate 56000
frame-relay intf-type dce
frame-relay route 201 interface Serial1/4 102
!
interface Serial1/4
no ip address
encapsulation frame-relay
clockrate 56000
frame-relay intf-type dce
frame-relay route 101 interface Serial1/2 100
frame-relay route 102 interface Serial1/3 201
frame-relay route 103 interface Serial1/1 301
frame-relay route 104 interface Serial1/7 401
!
interface Serial1/5
no ip address
shutdown
no cdp enable
!
interface Serial1/6
no ip address
shutdown
no cdp enable
!
interface Serial1/7
no ip address
encapsulation frame-relay
clockrate 56000
frame-relay intf-type dce
frame-relay route 401 interface Serial1/4 104
!
router ospf 1
log-adjacency-changes
area 0 authentication message-digest
area 1 range 150.10.10.0 255.255.255.0
area 1 virtual-link 150.10.1.1 message-digest-key 1 md5 cisco
area 1 virtual-link 150.10.30.3 authentication message-digest
area 1 virtual-link 150.10.30.3 message-digest-key 1 md5 cisco
area 5 range 150.10.65.0 255.255.255.0
redistribute igrp 1 metric 20 metric-type 1 subnets
network 150.10.5.5 0.0.0.0 area 0
network 150.10.10.0 0.0.0.15 area 1
network 150.10.50.0 0.0.0.255 area 0
network 150.10.60.0 0.0.0.255 area 5
network 150.10.65.0 0.0.0.3 area 5
network 200.150.150.5 0.0.0.0 area 0
neighbor 150.10.10.3 priority 255
neighbor 150.10.10.1
!
router igrp 1
redistribute ospf 1 metric 10000 100 255 1 1500 match internal external 1 exte
rnal 2 nssa-external 1 nssa-external 2
passive-interface BRI0/0
network 150.10.0.0
!
router bgp 250
no synchronization
bgp log-neighbor-changes
bgp confederation identifier 22
bgp confederation peers 6 8
network 150.10.20.0 mask 255.255.255.0
network 150.10.30.0 mask 255.255.255.0
network 150.10.45.0 mask 255.255.255.0
network 150.10.50.0 mask 255.255.255.0
neighbor 150.10.1.1 remote-as 250
neighbor 150.10.1.1 update-source Loopback0
neighbor 150.10.1.1 route-reflector-client
neighbor 150.10.2.2 remote-as 8
neighbor 150.10.2.2 ebgp-multihop 5
neighbor 150.10.2.2 update-source Loopback0
neighbor 150.10.3.3 remote-as 250
neighbor 150.10.3.3 update-source Loopback0
neighbor 150.10.3.3 route-reflector-client
neighbor 150.10.4.4 remote-as 250
neighbor 150.10.4.4 update-source Loopback0
neighbor 150.10.4.4 route-reflector-client
neighbor 150.10.6.6 remote-as 6
neighbor 150.10.6.6 ebgp-multihop 3
neighbor 150.10.6.6 update-source Loopback0
no auto-summary
!
ip classless
ip http server
ip ospf name-lookup
ip pim bidir-enable
!
dialer-list 1 protocol ip permit
no cdp run
!
!
!
ipx router eigrp 10
distribute-sap-list no-novs1 out Serial0/0.1
network 50
network 60
network 40
network 10
!
!
ipx router rip
no network 50
no network 60
no network 10
no network 40
!
!
!
!
ipx access-list sap no-novs1
deny FFFFFFFF 0 NOVS1
permit FFFFFFFF
!
dial-peer cor custom
!
!
!
!
alias configure r router
alias exec r sh ip ro
alias exec ri sh ipx ro
alias exec c conf t
alias exec i sh ip int brie
alias exec b sh ip b
alias exec bs sh ip b s
alias exec o sh ip o
alias exec on sh ip o nei
alias exec s sh run
alias exec sh1 sh run | beg
alias exec sh2 sh run | inc
!
line con 0
exec-timeout 0 0
password cisco
logging synchronous
line aux 0
line vty 0 4
exec-timeout 0 0
password cisco
logging synchronous
login
!
no scheduler allocate
end
r5#
------------------------------R1
r1#s
Building configuration...
Current configuration : 2362 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r1
!
logging buffered 4096 debugging
enable password cisco
!
ip subnet-zero
!
!
no ip domain-lookup
!
ip audit notify log
ip audit po max-events 100
ip ssh time-out 120
ip ssh authentication-retries 3
ipx routing 0010.7b36.f01a
!
call rsvp-sync
!
!
!
!
!
!
!
dlsw local-peer peer-id 150.10.1.1 promiscuous
dlsw bridge-group 1
!
interface Loopback0
ip address 150.10.1.1 255.255.255.0
ip ospf network point-to-point
!
interface Ethernet0/0
ip address 150.10.20.1 255.255.255.128
ip irdp
ip irdp preference 2147483647
ip ospf cost 150
half-duplex
ipx network 1
ipx network 2 encapsulation SAP secondary
ipx update interval sap passive
bridge-group 1
!
interface Serial0/0
ip address 150.10.10.1 255.255.255.240
encapsulation frame-relay
ip ospf hello-interval 10
ip ospf priority 0
ipx network 10
ipx bandwidth-percent eigrp 10 25
no fair-queue
frame-relay map ipx 10.0010.7b36.f01a 201 broadcast
frame-relay map ipx 10.0050.736c.2dff 201 broadcast
frame-relay map ip 150.10.10.1 201 broadcast
frame-relay map ip 150.10.10.3 201 broadcast
frame-relay map ip 150.10.10.5 201 broadcast
!
router ospf 1
log-adjacency-changes
area 0 authentication message-digest
area 1 virtual-link 200.150.150.5 message-digest-key 1 md5 cisco
area 2 range 150.10.20.0 255.255.255.0
network 150.10.1.1 0.0.0.0 area 1
network 150.10.10.0 0.0.0.15 area 1
network 150.10.20.0 0.0.0.127 area 2
!
router bgp 250
no synchronization
bgp log-neighbor-changes
bgp confederation identifier 250
bgp confederation peers 6 8
neighbor 150.10.5.5 remote-as 250
no auto-summary
!
ip classless
ip http server
ip pim bidir-enable
!
no cdp run
!
!
!
ipx router eigrp 10
network 10
!
!
ipx router rip
no network 10
!
!
!
bridge 1 protocol ieee
!
dial-peer cor custom
!
!
!
!
alias configure r router
alias exec r sh ip ro
alias exec ri sh ipx ro
alias exec c conf t
alias exec i sh ip int brie
alias exec b sh ip b
alias exec bs sh ip b s
alias exec o sh ip o
alias exec on sh ip o nei
alias exec s sh run
alias exec sh1 sh run | beg
alias exec sh2 sh run | inc
!
line con 0
exec-timeout 0 0
password cisco
logging synchronous
line aux 0
line vty 0 4
exec-timeout 0 0
password cisco
logging synchronous
login
!
no scheduler allocate
end
r1#
---------------------------R3
R3#s
Building configuration...
Current configuration : 2622 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R3
!
boot system tftp c1600-bnor2sy56i-l.121-12.bin 99.1.1.99
logging buffered 4096 debugging
enable password cisco
!
!
!
!
!
ip subnet-zero
no ip domain-lookup
!
ipx routing 0010.7b37.d28f
!
!
!
!
dlsw local-peer peer-id 150.10.3.3 promiscuous
dlsw bridge-group 1
!
interface Loopback0
ip address 150.10.3.3 255.255.255.0
ip ospf network point-to-point
!
interface Loopback33
ip address 150.10.30.3 255.255.255.248
ip ospf network point-to-point
ipx network 3
!
interface Ethernet0
description ip add 99.1.1.9 255.0.0.0
ip address 150.10.20.3 255.255.255.128
ip irdp
ip ospf cost 100
ip ospf priority 0
ipx network 1
ipx update interval sap passive
bridge-group 1
!
interface Serial0
ip address 150.10.10.3 255.255.255.240
encapsulation frame-relay
ip ospf hello-interval 10
ip ospf priority 255
shutdown
ipx network 10
ipx bandwidth-percent eigrp 10 25
frame-relay map ipx 10.0050.736c.2dff 301 broadcast
frame-relay map ip 150.10.10.1 301 broadcast
frame-relay map ip 150.10.10.3 301 broadcast
frame-relay map ip 150.10.10.5 301 broadcast
frame-relay map ipx 10.0010.7b37.d28f 301 broadcast
!
router ospf 1
log-adjacency-changes
area 0 authentication message-digest
area 1 range 150.10.30.0 255.255.255.0
area 1 virtual-link 200.150.150.5 authentication message-digest
area 1 virtual-link 200.150.150.5 message-digest-key 1 md5 cisco
area 2 range 150.10.20.0 255.255.255.0
redistribute connected subnets route-map loopback
network 150.10.3.3 0.0.0.0 area 1
network 150.10.10.0 0.0.0.15 area 1
network 150.10.20.0 0.0.0.127 area 2
network 150.10.30.0 0.0.0.7 area 1
!
router bgp 250
no synchronization
bgp log-neighbor-changes
bgp confederation identifier 250
bgp confederation peers 6 8
neighbor 150.10.5.5 remote-as 250
no auto-summary
!
ip classless
no ip http server
!
access-list 33 permit 150.10.30.0 0.0.0.255
no cdp run
!
!
ipx router eigrp 10
network 10
!
!
ipx router rip
no network 10
!
!
!
route-map loopback permit 10
match ip address 33
!
bridge 1 protocol ieee
alias configure r router
alias exec cl cle ip ro *
alias exec r sh ip ro
alias exec ri sh ipx ro
alias exec c conf t
alias exec i sh ip int brie
alias exec b sh ip b
alias exec bs sh ip b s
alias exec o sh ip o
alias exec on sh ip o nei
alias exec s sh run
alias exec sh1 sh run | beg
alias exec sh2 sh run | inc
!
line con 0
exec-timeout 0 0
password cisco
logging synchronous
line vty 0 4
exec-timeout 0 0
password cisco
logging synchronous
login
!
end
R3#
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:59:01 GMT-3