Re: (ASCEND) Cisco routers broke under TNT 8.0.1

[Dave Salaman <dsalaman@primary.net>]

Yup, that'll work for here out, but, ouch, having to go back and reconfig
all our customer's routers (possibly hundreds).

On Tue, 8 Feb 2000, Phillip Vandry wrote:

> > We just upgraded from 7.0V7 to 8.0.1. Lo and behold, none of our customers
> > with Cisco gear can connect anymore. All sessions fail C=185 P=63.
> > 
> > Packet tracing from both sides reveals the problem. The Cisco's are set up
> > for a dummy remote address. In previous releases the Cisco would NAK the
> > NAS address being offered by the TNT a few times and finally the TNT would
> > give up and say "you win" (the Cisco doesn't really have to have the
> > remote, TNT, IP address, it will route the traffic to whatever it thinks
> > the remote IP is, which will always be the other end of the PPP link).
> > Now, under 8.0.1, the TNT keeps resending and the Cisco keeps NAKing until
> > the TNT now CLOSES THE CONNECTION !
> 
> Solution: do not configure the Cisco with a hardcoded remote IP address.
> Cisco is one of the only router vendors I know of (the other is
> Compatible Systems) where you *don't* have to specify a remote IP
> address, and I suggest you take advantage of this.
> 
> Configure the Cisco with either "ip address negociated" or
> "ip unnumbered some_other_interface" and use dialer profiles:
> 
> interface Dialer0
>   ppp pap sent-username blah blah blah
>   ip unnumbered Ethernet0
>   dialer string phone_number
>   etc..
> ip route 0.0.0.0 0.0.0.0 Dialer0
> 
> -Phil
> 

-- 
    Dave

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