From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Mon Dec 06 2004 - 13:50:24 GMT-3
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.
http://www.InternetworkExpert.com
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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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>
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