From: Padhu (LFG) (padhu@xxxxxxxxxxxx)
Date: Fri Jun 15 2001 - 15:55:34 GMT-3
David,
When using dialer interfaces instead of physical, i see 2 things happening :
1. The summary for the BRI gets installed with metric 20 even when the isdn
line is down.( I like this)
2. There is periodic unicast from local dialer i/f to dialer i/f ip. Debug
dialer packet and debug ip packet shows this... I started clean with just 2
routers ..no redistribution involved to eliminate the no of variables . But
i still see this happening...So i had to filter on the caling side to deny
ip 172.16.1.1 0.0.0.0 172.16.1.2 0.0.0.0 log and bind that to dialer-list...
I still don't know why ...Could't see a whole lot even with debug ip ospf
spf and debug ip ospf lsa gen running.
Cheers,Padhu
-----Original Message-----
From: David Anderson [mailto:dma@cisco.com]
Sent: Friday, June 15, 2001 1:47 PM
To: ccielab@groupstudy.com
Subject: Dialer profiles
Hi everyone,
Just a few more days until fun Day #1
I have a question about Dialer profiles. I am having some trouble with my
ISDN line staying down when using dialer profiles instead of the physical
BRI interface. It is not because of filtering problems because when using
the physical interface it works fine, but when I use dialer interfaces with
what I believe is the correct config:
calling router
R1#
interface Dialer0
ip address 133.1.100.5 255.255.255.252
no ip directed-broadcast
encapsulation ppp
ip ospf message-digest-key 1 md5 cisco
ip ospf demand-circuit
dialer remote-name router3
dialer pool 1
dialer idle-timeout 20
dialer string 5552221
dialer load-threshold 128 outbound
dialer-group 1
no peer neighbor-route
pulse-time 0
ppp authentication chap callin
ppp multilink
end
called router
R2#
interface Dialer0
ip address 133.1.100.6 255.255.255.252
no ip directed-broadcast
encapsulation ppp
ip ospf message-digest-key 1 md5 cisco
ip ospf demand-circuit
dialer remote-name router5
dialer pool 1
dialer idle-timeout 20
dialer string 5554441
dialer load-threshold 128 outbound
dialer-group 1
no peer neighbor-route
pulse-time 0
ppp authentication chap
ppp multilink
end
The line will not stay down and the cause is destination 224.0.0.5 . Can
you not use ip ospf demand circuit on a dialer interface?
Remember, when I take the dialer interfaces away and just use the physical
BRI interfaces, it works fine. Any thoughts?
Thanks,
David
David Anderson
Network Design Engineer
Enterprise Solutions Architecture & Design
(408) 853-5515
dma@cisco.com
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