From: Christopher E. Miller (chrimill@xxxxxxxxx)
Date: Thu Apr 04 2002 - 13:49:53 GMT-3
Tarek,
The config that I sent out is the working config. The config in the book
used Legacy DDR and had backup interface on both routers. Using that config
I was unable to get the ISDN call to come up. Addressing your comments in
order as they appear:
1 - Don't need it. I typically apply only the commends needed for connecting
to the ISDN switch on the Physical interface. i.e.: switch-type and SPIDs
2 - There is no need to deny OSPF on the other side because the Dialer is a
backup interface. When you make the Dialer a backup interface it goes into
standby mode. It then will not dial unless the primary interface is in the
down state. The side that doesn't have a backup on the primary interface
needs to deny ospf multicast packets because it will try to dial for routing
updates. Another option is passive interface but you want update sent out
that interface when it comes up. The only way I found to make this work is
the config below.
3 - One of the requirements was to have the link come up on primary link
failure as well as when the load reaches 50%.
CHRIS
-----Original Message-----
From: Tarek Sabry [mailto:tsabry@houston.sns.slb.com]
Sent: Thursday, April 04, 2002 1:04 AM
To: 'Christopher E. Miller'; ccielab@groupstudy.com
Subject: RE: Lab 16 in CCIE Practical Studies Book (Cisco Press)
Christopher
What exactly doesn't work? Did you try to remove the serial cable on the
Green_Bay router, then the BRI link did not go up?
Just by glancing at the configs, I have the following comments:
- The BRI interfaces below do not have the PAP nor the Multilink
configurations. There has been a debate about whether this is necessary or
not, so I'd look into that.
- You are denying OSPF on one side of the DDR link only. Why is the other
side not doing the same?
_ Should you not be using ip ospf demand-circuit in this configuration?
I don't have this book, but if you tell me more abou the problem I can try
to help you.
Tarek
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Christopher E. Miller
Sent: Wednesday, April 03, 2002 8:46 PM
To: ccielab@groupstudy.com
Subject: Lab 16 in CCIE Practical Studies Book (Cisco Press)
All,
I was unable to get the given config to work. The solution is shown in the
book. I have enclosed the config for the Green_Bay and San Diego routers I
created to make this lab work. Is it some requirement that I'm missing or is
my config the correct one. Any comments welcomed...
Green_Bay#sh run
Building configuration...
Current configuration : 1465 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Green_Bay
!
enable secret 5 $1$2oQU$MD0waDjdydX8NcfyQYC1h.
!
username San_Diego password 0 cisco
!
!
ip subnet-zero
no ip domain-lookup
!
isdn switch-type basic-net3
isdn voice-call-failure 0
cns event-service server
!
!
interface Ethernet0
ip address 10.10.10.2 255.255.255.0
!
interface Serial0
no ip address
encapsulation frame-relay
no ip mroute-cache
!
interface Serial0.1 point-to-point
backup delay 10 30
backup interface Dialer1
ip address 170.10.35.1 255.255.255.0
frame-relay interface-dlci 120
!
interface Serial1
ip address 11.11.11.1 255.255.255.0
clockrate 1000000
!
interface BRI0
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
!
interface Dialer1
ip address 170.10.135.1 255.255.255.0
encapsulation ppp
dialer pool 1
dialer remote-name San_Diego
dialer string 5552222
dialer load-threshold 1 either
dialer-group 1
ppp authentication pap
ppp pap sent-username Green_Bay password 7 070C285F4D06
ppp multilink
!
router ospf 1
log-adjacency-changes
network 11.11.11.0 0.0.0.255 area 1
network 170.10.35.0 0.0.0.255 area 0
network 170.10.135.0 0.0.0.255 area 0
!
ip classless
no ip http server
!
dialer-list 1 protocol ip permit
!
tftp-server flash:/c2500-jos56i-l.121-13.bin alias chris
!
line con 0
logging synchronous
line aux 0
line vty 0 4
login
!
end
San_Diego#sh run
Building configuration...
Current configuration : 1445 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname San_Diego
!
enable secret 5 $1$T7Bu$epTZvwLcZ.msGFJCR8Mpw0
!
username Green_Bay password 0 cisco
!
!
ip subnet-zero
no ip domain-lookup
!
isdn switch-type basic-net3
isdn voice-call-failure 0
cns event-service server
!
!
!
interface Ethernet0
ip address 10.10.10.2 255.255.255.0
!
interface Serial0
no ip address
encapsulation frame-relay
no ip mroute-cache
frame-relay lmi-type cisco
!
interface Serial0.1 point-to-point
ip address 170.10.35.2 255.255.255.0
frame-relay interface-dlci 121
!
interface Serial1
ip address 170.10.136.1 255.255.255.0
clockrate 1000000
!
interface BRI0
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
!
interface Dialer1
ip address 170.10.135.2 255.255.255.0
encapsulation ppp
dialer pool 1
dialer remote-name Green_Bay
dialer string 5551111
dialer load-threshold 1 either
dialer-group 1
ppp authentication pap
ppp pap sent-username San_Diego password 7 0822455D0A16
ppp multilink
!
router ospf 1
log-adjacency-changes
network 170.10.35.0 0.0.0.255 area 0
network 170.10.135.0 0.0.0.255 area 0
network 170.10.136.0 0.0.0.255 area 0
!
ip classless
no ip http server
!
access-list 101 deny ospf any any
access-list 101 permit ip any any
dialer-list 1 protocol ip list 101
!
!
line con 0
line aux 0
line vty 0 4
login
!
end
line vty 0 4
login
!
end
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