From: Manny Gonzalez (manny@xxxxxxx)
Date: Sat Mar 30 2002 - 22:10:32 GMT-3
This reminds me, is there a program that lets me "draw" in ASCII? I have
a tough time doing ASCII art/test/diagrams etc.
TIA
"Jason T. Rohm" wrote:
>
> 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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