My post we regarding using an IP on the interface and a subinterface for
Frame Relay, as mentioned by MADMAN.... But thanks for the explanation =)
Mike W.
"John Neiberger" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> You can have an IP address on the main interface as well as the
> subinterfaces when trunking. You wouldn't want to do this when using
> ISL trunking, but it used to be necessary when using 802.1q. In dot1q,
> the native VLAN is not tagged. If you were to create a subinterface for
> the native VLAN, the router would not recognize it as such and the trunk
> would never work.
>
> The solution is to assign the IP address of your native VLAN on the
> main interface, and then use subinterfaces for any subsequent VLANs.
> Supposedly, with recent IOS releases this is no longer necessary and
> subinterfaces can be used for all VLANs.
>
> HTH,
> John
>
> >>> "Michael L. Williams" 9/6/01 4:30:11
> PM >>>
> Dave, how would this work then? (with Frame) you could assign a DLCI
> to the
> interface as well as an IP, then assign a DLCI and IP to the
> subinterfaces?
> What would this accomplish?
>
> FYI: I just read in the BCRAN book today that although you *can* have
> an IP
> on the main interface and one on the subtinterface, that the
> subinterfaces
> wouldn't receive their traffic. Can't always believe what you read
> tho =)
>
> Mike W.
>
> "MADMAN" wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > Don't know the orgin of this post but you certainly can have an
> > address on the physical and subinterfaces when frame or ATM. Keep
> in
> > mind though that when you address the physical interface you are by
> > default a multipoint interface.
> >
> > Dave
> >
> > Sean Knox wrote:
> > >
> > > Yes, this is correct. Now I am curious what the actual reasoning
> is
> behind
> > > this. Anyone know?
> > >
> > > Sean
> > >
> > > ""Jeff Smith"" wrote in message
> > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > > > If I remember correctly you cannot have an ip address on the
> actual
> > > > interface if you have sub-int's with ip's. That true?
> > --
> > David Madland
> > Sr. Network Engineer
> > CCIE# 2016
> > Qwest Communications Int. Inc.
> > [EMAIL PROTECTED]
> > 612-664-3367
> >
> > "Emotion should reflect reason not guide it"
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