08-07-2003 06:06 AM - edited 03-02-2019 09:25 AM
Need Help troubleshooting. I would like someone to look a my config for frame relay backup and tell me if I miss something. Yesterday I went to my remote site and shutdown the interface for frame relay to see if the backup scheme would work. I'm using a dialer watch scheme. As soon as it loss the connection it works a plan it dial up the central site. However from a desktop I was not able to establish any connecton to a server. I was able to ping the server from the router but no connection from the desk top. I believe its a routing issue but
either I too close or overlooking the obvious. Also when shut down the remote site and it establish a isdn connection all the other remote sites connected as well. If you can help thanks in advance. Here is example of the config at the remote site.interface BRI0
no ip address
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer pool-member 1
isdn switch-type basic-ni
isdn spid1 XXXXXXXXXXXXXX XXXXXXX
isdn spid2 XXXXXXXXXXXXXX XXXXXXX
no fair-queue
no cdp enable
ppp multilink
!
interface Dialer1
ip address 192.168.252.22 255.255.255.0
encapsulation ppp
no ip route-cache
no ip mroute-cache
delay 5000
dialer pool 1
dialer idle-timeout 30
dialer watch-disable 15
dialer string xxxxxxx
dialer load-threshold 2 outbound
dialer watch-group 5
dialer-group 1
no fair-queue
no cdp enable
ppp authentication chap callin
ppp multilink
multilink min-links 2
!
router eigrp 2
network 192.168.1.0
network 192.168.252.0
access-list 101 remark Interesting Traffic
access-list 101 deny eigrp any any
access-list 101 permit ip any any
central site
interface Serial1/0:23
ip address 192.168.252.1 255.255.255.0
encapsulation ppp
dialer idle-timeout 30
dialer-group 1
isdn switch-type primary-ni
isdn incoming-voice data
ppp authentication chap callin
ppp chap hostname central site
ppp chap password 123456789
08-07-2003 10:09 AM
a few thing you may want to add are under router eigrp 2
no auto-summary
also add ip route 0.0.0.0 0.0.0.0 192.168.252.1 250
do you get a neighbor relationship over the dialer in EIGRP ?
08-08-2003 06:56 AM
I do have that route added I just have the metric of 150 instead of 250. No auto-summary is turn on also.
I have also turn on passive-interface on the remote router so no router updates will be going across the link. What I think I overlook was there were no route on the central router under router eigrp 2 or a even a static route. I won't be able to test a can until next week. Thanks for responding.
08-19-2003 04:40 PM
The only way I got it to work was to add static routes to the central router. But the problem I having now is the link is flapping. Channel one will come up then channel 2. Then channel 1 will drop out
Any Ideas you can offer. Thanks if you can help me.
08-19-2003 09:08 PM
I've seen this isdn channel flapping before....it's related to the chap authentication. It looks as if you don't have a username/password pair set up on the remote router, so when the call is established, the remote site doesn't know who is calling in....when it has data for the central site, it makes another call using the second B channel back to the central site. The channels are dropping because they are timing out(no more data to send)and it looks like they are flapping....
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