From: donny.mateo@sg.ca-indosuez.com
Date: Mon Jul 28 2003 - 23:38:22 GMT-3
First of all, Dialer-group and dialer-list is not the one who trigger the call. They are used to tell the router which traffic is interesting and to keep dialer-idle timout refresh so the isdn line won't be disconnected as long as those traffic exist.
Once you have an interesting traffic, your router needs to know where to route the traffic. (you can use whatever method, static floating, dialer watch etc). Now that the router has a next-hop address, dialer-map comes into play by mapping the next-hop
addres to the ISDN circuit.
I got a few setup with only one side having dialer-string and no there has been no problem so far. There was even a case when only one end is having dialer-list and dialer string, and the other has nothing just a definition of the dialer. Of course the
line would get disconnected every 300 seconds by the router that has no dialer-group (since it dont' see any reason why it should keep it up since there is no interesting traffic anyway and naturally idle-timeout would disconnect the line).
Try to change it using the new form of dialer configuration and get rid of the dialer-map. Your problem is you are using dialer-map with no number. So when the called router try to put the packet to ISDN frame it will fail ( it got no number to refer to),
you won't get into this problem is you're using dialer string.
<calling router>
hostname calling
int dialer 1
encap ppp
ip addr 1.1.1.1 255.255.255.252
dialer pool 1
dialer-group 1
dialer remote-name called
dialer string x.x.x.x
exit
dialer-list 1 protocol ip permit
<called router>
hostname called
int dialer 1
encap ppp
ip addr 1.1.1.2 255.255.255.252
dialer pool 1
dialer-group 1
dialer remote-name calling
exit
dialer-list 1 protocl ip permit
Donny
Jim Phillipo
<jim.phillipo@gua To: ccielab@groupstudy.com
rdent.com> cc: "'brian@cyscoexpert.com'" <brian@cyscoexpert.com>, (bcc: Donny
Sent by: MATEO/ADPC/ASIA/BANQUE_INDOSUEZ/FR)
nobody@groupstudy Subject: ISDN Question
.com
07/29/2003 10:04
AM
Please respond to
Jim Phillipo
I was always under the ASSUMPTION that the dialer group and dilaer list were
only for bringing up the link (interesting traffic). I am working on a lab
that requires only one side to make a call.
Until I put the dialer commands on the called router it would not work. I
would connect but I would get the dreaded encapsulation failed message.
Is this the correct operation ?
I did have my dialer map on the called router with the dial number left out.
TIA
JIm
Jim Phillipo, CCNP, CCDP
Sr. Internetworking Engineer
W: 401.456.1821 F: 401.456.0599 M: 508.982.8923
90 Royal Little Drive, Providence, RI 02904
www.guardent.com
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