From: Thomas Trygar (trygar@xxxxxxxxxxxx)
Date: Mon Jul 17 2000 - 04:54:42 GMT-3
Try this Kieth.
These configs worked with CHAP, maybe your having a PAP authentication issue.
Tom
R4: (callback client)
interface BRI0
ip address 130.130.101.21 255.255.255.252
encapsulation ppp
dialer map ip 130.130.101.22 name R5 broadcast 8358662
dialer-group 1
isdn switch-type basic-ni
isdn spid1 0835866101 8358661
isdn spid2 0835866301
ppp callback request
ppp authentication chap
R5: (callback server)
interface BRI0
ip address 130.130.101.22 255.255.255.252
encapsulation ppp
dialer callback-secure
dialer map ip 130.130.101.21 name R4 class cllbck broadcast 8358661
dialer-group 1
isdn switch-type basic-ni
isdn spid1 0835866201 8358662
isdn spid2 0835866401
ppp callback accept
ppp authentication chap
>From: "Keith Kruepke" <Keith@Kruepke.com>
>Reply-To: "Keith Kruepke" <Keith@Kruepke.com>
>To: <ccielab@groupstudy.com>
>Subject: PPP callback (yes, again)
>Date: Sun, 16 Jul 2000 21:45:25 -0500
>
>Well, my efforts with PPP callback have not been any more successful the
>second time around. I have modified my configs so that they look almost
>identical to those in the documentation. Still I am having this one
>problem.
>
>Let me start by saying that PPP is working in most senses of the word--it's
just not working the way I want it to or would expect. So I don't plan on
spending much more time on this. But I thought I would put up one last
request to the group, just in case something will jump out at someone about
this config. Some of the stuff in here is probably not necessary, but I have
been adding stuff to see if it helps. My configs are at the bottom of this
message.
>
>With these configs, I try to ping from R5 to R3. R5 dials, authenticates,
and disconnects, as it should. However, it does this five times before giving
up. Usually, this repeated dialing prevents R3 from finding an available
interface to dial out on. If I do an extended ping and select to send only
one packet, then it works fine.
>
>Note that if I remove the 'dialer enable-timeout' command from R3, R3 waits
to dial until all five of R5's dial attempts. In this case, it works, but by
then all five pings have timed out. If I were to send an even bigger flood of
traffic (such as would happen in the real world), then the problem would
probably still happen, as R5 would dial many more times over. The sample
configs show an enable timeout of 2, which makes sense, because you want the
server to dial back right away, rather than making the traffic wait.
>
>So as I see it, this is a problem with R5, not R3. R5 should wait after
>requesting a callback, not dial again immediately. (I would have thought
>that to be the default behavior of callback...) But I've tried all sorts
>of things (including 'dialer enable-timeout', 'isdn fast-rollover-delay',
>'dialer hold-queue'), none of which have done the trick.
>
>If anyone can help me out, that would be great. If anyone has a working
>PPP callback config, feel free to send that if it is easier.
>
>Thanks all,
>Keith
>
>-----
>R5 (callback client) v12.1(2):
>
>interface BRI0/0
> ip address 130.130.101.21 255.255.255.252
> encapsulation ppp
> dialer enable-timeout 30
> dialer map ip 130.130.101.22 name R3 broadcast XXXXXXX
> dialer hold-queue 100 timeout 60
> dialer-group 1
> isdn switch-type basic-ni
> isdn spid1 XXXXXXXXXX0101
> isdn spid2 XXXXXXXXXX0101
> isdn fast-rollover-delay 45
> ppp callback request
> ppp authentication pap callin
> ppp pap sent-username R5 password 7 1306181C055957
>-----
>R3 (callback server) v11.3(3a)T1:
>
>interface BRI0/0
> ip address 130.130.101.22 255.255.255.252
> encapsulation ppp
> dialer callback-secure
> dialer idle-timeout 60
> dialer enable-timeout 2
> dialer map ip 130.130.101.21 name R5 class cllbck broadcast XXXXXXX
> dialer hold-queue 50 timeout 60
> dialer-group 1
> isdn switch-type basic-ni
> isdn spid1 XXXXXXXXXX0101
> isdn spid2 XXXXXXXXXX0101
> ppp callback accept
> ppp authentication pap callin
> ppp pap sent-username R3 password 7 02050B5505555A
> hold-queue 75 in
>!
>map-class dialer cllbck
> dialer callback-server username
>-----
>
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