From: Alex Dean (Alex.Dean@xxxxxxxxxxxxx)
Date: Tue Aug 31 1999 - 17:45:05 GMT-3
Derek,
I think you are probably fine with what you have done. In my lab I
have an LS1010, an ATM card in my CAT5000, and an ATM connected 4700.
With this combination, PVCs are very hard to test, because they need to
be terminated in the same sort of end device (ie. router-to-router or
LANECARD-to-LANECARD). A colleague of mine worked out that if you
bridge on the 4700, you can get PVCs working. My point is that unless
there are two ATM connected routers, you will most likely not get any
PVC questions, more likely you will get questions on LANE. I have
played with this a bit and it is fairly simple at the basic level - I
would recommend you check out some documentation on this rather than
sweating the PVCs too much. As you say, using Frame Relay as a model
will probably give you a good insight into any PVC issues that you might
get.
If anybody knows that PVCs are a major part of the lab - then please
let the group know. One scenario could be connecting to another router
or LANE card which the proctor controls...
That is my two cents worth anyway, good luck Derek.
Cheers
Alex (3 weeks to go)
>>> "Derek Fage" <DerekF@itexjsy.com> 01/09/99 00:36:32 >>>
Not having ATM in my Lab (no cash), I've been working through several
configurations on paper, and running through the online documentation.
I'm fairly comfortable with PVCs now if I equate it to Frame Relay,
however
I do have a couple of questions.
All of the cisco examples in the book show the pvcs on the physical
interface, however I have seen some other examples where a multipoint
subinterface is created.
These interfaces have all the characteristics of F/R physical and
multipoint
interfaces, and I would expect the same layer 3 issues with them that
I
would have with F/R.
Can ATM also be configured with Point-to-point interfaces in the same
way as
F/R, and does it then follow the same rules ?
If you need different subnets with your PVCs to different routers, I
assume
you would have to use subinterfaces, so would you use multipoint or not
?
Any other recomendations on whether to use a multipoint subinterface
as
opposed to a physical interface, and whether with multiple subnets I
should
use multiple multi-point interfaces or point-to-point interfaces (if
there
is one) ?
2 days to go...
Derek...
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