From: Derek Fage (DerekF@xxxxxxxxxxx)
Date: Sat Jul 31 1999 - 11:28:42 GMT-3
If I were doing this I'd ensure that the IP stuff is all working first
(including the ISDN backup). Once you have all of that configured, you knoe
that IP traffic will always get across, so you only need to create a single
tunnel. As you cannot use the serial interface addresses dor the tunnel
source or destination (as they could go down), I'd use loopback interfaces.
Derek...
> -----Original Message-----
> From: Chuah Eng Wee [SMTP:chuahew@cyberway.com.sg]
> Sent: 31 July 1999 06:16
> To: Ron Trunk
> Cc: ccielab@groupstudy.com
> Subject: Re: How to interpret this ??
>
> Hi Ron,
>
> Thanks for your comments.
>
> Basically, that question is from a practice lab I got from a friend who
> has attended some pre-lab courses.
>
> The scenario is quite interesting, basially
>
> r3 connected to r5 via serial and backup with ISDN.
> your task is to make sure that IP (OSPF) and IPX gets through.
> No native IPX between r3 and r5.
>
> My approach is to create two tunnels, tu0 for serial and tu1 for
> bri0. To stop the ipx packet from triggering the line, I turned off
> ipx/rip at tu1. (Actually, it is the IPX encap by IP packet that triggers
> the line)
>
> Then I define a default ipx route at r3 which is a stub router. There are
> other upstream routers behind r5. So I add a floating static pointing to
> r3 and redistribute the static in IPX/RIP at r5.
>
> It works fine, but I guess I took too much time to make it work. Anybody
> have alternative solution, feel free suggest.
>
> Have Fun
> Eng Wee
> 19 days....
>
>
>
> At 08:48 30/07/99 -0400, you wrote:
> >>Hi..
> >>
> >>How do u interpret the following :
> >>
> >>No native IPX should pass the link between r3 and r5
> >>- I would interpret as no IPX between r3 and r5, we
> >>need to create a tunnel.
> >
> >
> >That's how I would read it.
> >
> >>
> >>No dynamic traffic IPX traffic should be exchanged between R3 and R4
> >>- THis one is more obvious. I would interpret as no NLSP, no IPX/EIGRP,
> no
> >>IPX RIP. We can only use static routes.
> >>
> >
> >
> >I'm not sure of your wording, Did you leave out the word 'routing'?
> This
> >might include SAPs too.
> >
> >If this were a REAL exam question (I'm sure it isn't because that would
> be a
> >NDA violation, right?), the best thing to do if you are not sure of the
> >question is to ASK THE PROCTOR. The proctor will help you clarify the
> >question. He/She may not tell you the answer in the way you want to hear
> >it, but he/she will try and help you nonetheless.
> >
> >Ron
> >
> >
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