From: Chua, Parry (Parry.Chua@xxxxxxxxxx)
Date: Sat Mar 30 2002 - 22:29:59 GMT-3
It sound like you are using dialer watch and demand circuit together, I am not
sure will this give you the desire result.
Regards
Parry
-----Original Message-----
From: Jason T. Rohm [mailto:jtrohm@athenet.net]
Sent: Sunday, March 31, 2002 7:50 AM
To: CCIELIST (E-mail)
Subject: OSPF Demand Circuit Problems
Hello,
I am having difficulty with an OSPF demand circuit running over an async
interface.
The line comes up as desired with a dialer watch-group, however, when the
line goes down again, OSPF shows the LSAs updating and re-dials. This
continues every 120 seconds (idle-timeout) forever.
As far as I can see, the links are configured properly (ip ospf
demand-circuit, ip ospf network point-to-point).
There are no other relevant factors (not redistributions or other unstable
links).
My network is configured roughly in a square,
(This is the Hello Computers Security Lab 2 core network, for those of you
with access. No other routers are configured right now so as to eliminate
the possibility of interaction).
Router 1 and 5 share an ethernet LAN that is area 0.
Router 5 is connected to router 2 via frame.
Router 2 is connected to router 4 via frame.
Router 4 is connected to router 5 via the DDR async.
All frame/DDR networks are area 1.
[R5] --/DDR/-- [R4]
| |
/Enet/ /Frame/
| |
[R1] -/Frame/- [R2]
I have reviewed, investigated, and attempted all the applicable fixes listed
at the following URL:
http://www.cisco.com/warp/public/104/dcprob.html
Attached is the complete R4 and R5 configuration along with a up/down
snapshot of the "show ip ospf database" information.
---------------------------
Router 4:
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname 2620D-R4
!
enable password cisco
!
username 2610B-R5 callback-dialstring 101 password 0 cisco
memory-size iomem 10
ip subnet-zero
!
!
no ip domain-lookup
ip domain-name toontown.local
!
ip audit notify log
ip audit po max-events 100
ip ssh time-out 120
ip ssh authentication-retries 3
!
chat-script RESET "" "+++ATH\r" OK "ATZ" OK \c
modemcap entry optima_v34:FD=&F:AA=S0=1:CD=&C1:DTR=&D2:HFL=&K1:NEC=E0
call rsvp-sync
!
!
interface Loopback0
ip address 44.44.44.44 255.255.255.0
ip ospf network point-to-point
!
interface FastEthernet0/0
ip address 172.16.44.4 255.255.255.0
speed 100
full-duplex
no cdp enable
!
interface Serial0/0
ip address 150.50.24.4 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-point
no fair-queue
frame-relay interface-dlci 142
frame-relay lmi-type cisco
!
interface Serial0/1
ip address 150.50.46.4 255.255.255.0
encapsulation ppp
clockrate 500000
no cdp enable
!
interface Async65
ip address 145.45.45.4 255.255.255.240
encapsulation ppp
ip ospf network point-to-point
ip ospf cost 2000
ip ospf demand-circuit
dialer in-band
dialer idle-timeout 0
dialer map ip 145.45.45.5 name 2610B-R5 class CALLBACK broadcast 101
dialer-group 1
async default routing
async mode dedicated
ppp callback accept
ppp authentication chap
!
router ospf 1
router-id 44.44.44.44
log-adjacency-changes
network 44.44.44.0 0.0.0.255 area 1
network 145.45.45.0 0.0.0.255 area 1
network 150.50.24.0 0.0.0.255 area 1
!
ip classless
ip http server
ip pim bidir-enable
!
!
map-class dialer CALLBACK
dialer callback-server username
access-list 9 deny 224.0.0.0 15.255.255.255
access-list 9 deny any
access-list 9 permit any
access-list 199 permit icmp any any
dialer-list 1 protocol ip list 9
no cdp run
!
dial-peer cor custom
!
!
!
!
banner motd ^C
**** R4 - 2620D ****
^C
!
line con 0
exec-timeout 0 0
privilege level 15
line aux 0
modem InOut
modem autoconfigure type optima_v34
speed 115200
line vty 0 4
login
!
end
---------------------------
Router 5:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname 2610B-R5
!
logging buffered 4096 debugging
no logging console
enable password cisco
!
username 2620D-R4 password 0 cisco
ip subnet-zero
no ip domain-lookup
ip domain-name toontown.local
chat-script RESET "" "+++ATH\r" OK "ATZ" OK \c
modemcap entry optima_v34:FD=&F:AA=S0=1:CD=&C1:DTR=&D2:HFL=&K1:NEC=E0
!
!
interface Loopback0
ip address 55.55.55.55 255.255.255.0
no ip directed-broadcast
ip ospf network point-to-point
!
interface FastEthernet0/0
ip address 150.50.15.5 255.255.255.0
no ip directed-broadcast
no cdp enable
!
interface Serial0/0
no ip address
no ip directed-broadcast
no ip mroute-cache
shutdown
no fair-queue
no cdp enable
!
interface Serial0/1
ip address 150.50.57.5 255.255.255.0
no ip directed-broadcast
encapsulation ppp
clockrate 500000
no cdp enable
!
interface Async65
ip address 145.45.45.5 255.255.255.240
no ip directed-broadcast
encapsulation ppp
ip ospf network point-to-point
ip ospf cost 2000
ip ospf demand-circuit
dialer in-band
dialer idle-timeout 90
dialer fast-idle 45
dialer watch-disable 45
dialer watch-group 1
dialer map ip 150.50.24.0 name 2620D-R4 broadcast 100
dialer map ip 145.45.45.4 name 2620D-R4 broadcast 100
dialer-group 1
async default routing
async mode dedicated
no cdp enable
ppp callback request
ppp authentication chap
!
router ospf 1
router-id 55.55.55.55
network 55.55.55.0 0.0.0.255 area 0
network 145.45.45.0 0.0.0.255 area 1
network 150.50.15.0 0.0.0.255 area 0
!
ip classless
!
access-list 199 permit icmp any any
dialer watch-list 1 ip 150.50.24.0 255.255.255.0
dialer-list 1 protocol ip permit
no cdp run
banner motd ^C
**** R5 - 2610B ****
^C
!
line con 0
privilege level 15
transport input none
line aux 0
modem InOut
modem autoconfigure type optima_v34
speed 115200
line vty 0 4
login
!
no scheduler allocate
end
---------------------------
show ip ospf database (R5 while up)
2610B-R5#sh ip ospf data
OSPF Router with ID (55.55.55.55) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
11.11.11.11 11.11.11.11 1161 0x80000007 0x608F 2
55.55.55.55 55.55.55.55 1004 0x80000008 0xDC1F 2
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
150.50.15.1 11.11.11.11 1413 0x80000004 0xDE4A
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
22.22.22.0 11.11.11.11 899 0x80000004 0xA9E0
22.22.22.0 55.55.55.55 18 0x80000001 0xE81C
44.44.44.0 11.11.11.11 900 0x80000004 0x11F6
44.44.44.0 55.55.55.55 18 0x80000001 0x4CB6
145.45.45.0 11.11.11.11 27 0x80000001 0xDBFF
145.45.45.0 55.55.55.55 28 0x80000001 0xAA01
150.50.12.0 11.11.11.11 1164 0x80000004 0x36C2
150.50.12.0 55.55.55.55 19 0x80000001 0xF73B
150.50.24.0 11.11.11.11 901 0x80000004 0x3478
150.50.24.0 55.55.55.55 19 0x80000001 0xF076
Router Link States (Area 1)
Link ID ADV Router Age Seq# Checksum Link count
11.11.11.11 11.11.11.11 124 (DNA) 0x80000006 0x7AC8 2
22.22.22.22 22.22.22.22 425 (DNA) 0x80000009 0x9A13 5
44.44.44.44 44.44.44.44 5 (DNA) 0x8000001B 0x57A6 5
55.55.55.55 55.55.55.55 29 0x80000018 0x66BE 2
Summary Net Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
11.11.11.0 11.11.11.11 124 (DNA) 0x80000005 0xB238
11.11.11.0 55.55.55.55 752 0x80000004 0xEB45
55.55.55.0 11.11.11.11 124 (DNA) 0x80000005 0x86DE
55.55.55.0 55.55.55.55 753 0x80000004 0x5165
150.50.15.0 11.11.11.11 124 (DNA) 0x80000005 0x9A99
150.50.15.0 55.55.55.55 753 0x80000004 0xC9B1
---------------------------
show ip ospf data (R5 while down)
2610B-R5#show ip ospf data
OSPF Router with ID (55.55.55.55) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
11.11.11.11 11.11.11.11 1270 0x80000007 0x608F 2
55.55.55.55 55.55.55.55 1113 0x80000008 0xDC1F 2
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
150.50.15.1 11.11.11.11 1522 0x80000004 0xDE4A
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
22.22.22.0 11.11.11.11 1008 0x80000004 0xA9E0
44.44.44.0 11.11.11.11 1008 0x80000004 0x11F6
150.50.12.0 11.11.11.11 1270 0x80000004 0x36C2
150.50.24.0 11.11.11.11 1008 0x80000004 0x3478
Router Link States (Area 1)
Link ID ADV Router Age Seq# Checksum Link count
11.11.11.11 11.11.11.11 124 (DNA) 0x80000006 0x7AC8 2
22.22.22.22 22.22.22.22 425 (DNA) 0x80000009 0x9A13 5
44.44.44.44 44.44.44.44 5 (DNA) 0x8000001B 0x57A6 5
55.55.55.55 55.55.55.55 18 0x80000019 0xC64 0
Summary Net Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
11.11.11.0 11.11.11.11 124 (DNA) 0x80000005 0xB238
11.11.11.0 55.55.55.55 860 0x80000004 0xEB45
22.22.22.0 55.55.55.55 14 0x80000001 0xE6EB
44.44.44.0 55.55.55.55 14 0x80000001 0x4E02
55.55.55.0 11.11.11.11 124 (DNA) 0x80000005 0x86DE
55.55.55.0 55.55.55.55 860 0x80000004 0x5165
150.50.12.0 55.55.55.55 14 0x80000001 0x73CD
150.50.15.0 11.11.11.11 124 (DNA) 0x80000005 0x9A99
150.50.15.0 55.55.55.55 860 0x80000004 0xC9B1
150.50.24.0 55.55.55.55 14 0x80000001 0x7183
2610B-R5#
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