From: David Duncon (david_ccie@hotmail.com)
Date: Mon Dec 06 2004 - 20:25:40 GMT-3
Excellent explanation, Brian :-)
Cheers
- David
>From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
>To: "David Duncon" <david_ccie@hotmail.com>,<ccielab@groupstudy.com>
>Subject: RE: DLSW - couple of queries
>Date: Mon, 6 Dec 2004 11:50:24 -0500
>
>David,
>
> What you are configuring is a combinations of DLSw+ direct over
>Frame Relay and DLSw+ Lite. The difference between them is the
>transport used. When the "pass-thru" keyword is left off of the dlsw
>remote-peer statement, DLSw+ lite is being used. DLSw+ lite uses an
>additional LLC2 header to provide reliability over Frame Relay.
>Therefore without the "pass-thru" keyword on the remote-peer statement
>you need layer 3 to layer 2 resolution for LLC2, not DLSw+. If you are
>using the "pass-thru" keyword, then LLC2 is not used, and you need layer
>3 to layer 2 resolution for DLSw+.
>
>In short:
>
>Without "pass-thru", frame-relay map llc2
>With "pass-thru", frame-relay map dlsw
>
>
>HTH,
>
>Brian McGahan, CCIE #8593
>bmcgahan@internetworkexpert.com
>
>Internetwork Expert, Inc.
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>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
>Of
> > David Duncon
> > Sent: Monday, December 06, 2004 5:06 AM
> > To: ccielab@groupstudy.com
> > Subject: DLSW - couple of queries
> >
> > Hi Group,
> >
> > Couple of queries on dlsw.
> >
> > 1) If you want to run a dlsw over frame-relay direct from Multipoint
> > interface on R1 (let us say on R1 which is HUB with 2 spokes R2 and
>R3) to
> > physical interface on R2 , then is the following config valid. Do I
>need
> > all
> > 4 commands on R1 , particularly I am not 100% on why and what on fr
>map
> > bridge dlci and bridge-group commands ??
> >
> > And also how does another mapped VC on the R1's multipoint int behave
>as
> > the
> > whole int got bridge-group 1 command enabled ?
> >
> >
> > R1:
> >
> > Config t
> > Dlsw bridge-group 1
> > Bridge 1 protocol ieee
> > Dlsw local-peer peer-id xxxx
> > Dlsw remote-peer 0 frame-relay interface s0/0 102 -----------> 1
> >
> >
> > Interface s0/0.1 multipoint
> > Ip add xxxx xxxx
> > Frame-relay map ip xxxx 102 broadcast
> > Frame-relay map ip xxxx 103 broadcast
> > Frame-relay map dlsw broadcast ------------------------------------> 2
> > Bridge-group 1
> > ---------------------------------------------------------------> 3
> > frame-relay map bridge dlci 102
>---------------------------------------> 4
> > Exit
> >
> > R2 :
> >
> > Dlsw bridge-group 1
> > Dlsw local-peer peer-id xxxx
> > Dlsw remote-peer 0 frame-relay interface s0/0 201
> > Bridge 1 protocol ieee
> >
> > Interface s0/0
> > Frame-relay map ip xxxx 201 broadcast
> > Frame-relay map dlsw broadcast
> > Bridge-group 1
> >
> >
> > 2) Secondly , I am just wondering when do you need to configure
>multiple
> > bridge-groups on , let us say in the same example as described
>above.i.e
> > R1
> > with a multipoint interface with R2 and R3 hanging from her. An
>example
> > would be perfect :-)
> >
> > Your feedback is much appreciated.
> >
> > Cheers
> >
> > - David.
> >
> > _________________________________________________________________
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