From: John Conzone (jkconzone@xxxxxxxx)
Date: Wed May 03 2000 - 20:40:31 GMT-3
I keep seeing the source-bridge ring-group statements on these DLSW
routers with no Token Ring, just Ethernet, and I can't figure out why they
are there. I configured a bunch of DLSW routers with ethernet, and never
used that statement. Only on Token Ring peers.
Without token ring, it serves no purpose. It does work without it. I
promise!
----- Original Message -----
From: "Kinton Connelly" <kinton@oldmedia.com>
To: "Nnanna Obuba" <obuba@bellatlantic.net>; <ccielab@groupstudy.com>
Sent: Wednesday, May 03, 2000 5:08 PM
Subject: Re: quick DLSW+ question
> Thanks, Nnanna - that did the trick! I should have remembered to look in
> the Tech Tips section - they had exactly the config I was looking for -
and
> you DO need the "source-bridge ring-group x" command - even when it's
> ethernet to ethernet over DLSW+.
>
> Kinton
>
> Here are the configs from Cisco:
>
> 3. Ring to Ethernet over WAN
>
> ring1--ROUTER A------WAN-----ROUTER B--ethernet
>
> Router A
> --------
> !
> source-bridge ring-group 2000
> dlsw local-peer peer-id 150.150.1.1
> dlsw remote-peer 0 tcp 150.150.2.1
> !
> interface Loopback0
> ip address 150.150.1.1 255.255.255.0
> !
> interface Serial0
> ip address 150.150.100.1 255.255.255.0
> !
> interface TokenRing0
> ip address 150.150.10.1 255.255.255.0
> ring-speed 16
> source-bridge 1 1 2000
> source-bridge spanning
>
>
> Router B
> --------
> !
> source-bridge ring-group 2000
> dlsw local-peer peer-id 150.150.2.1
> dlsw remote-peer 0 tcp 150.150.1.1
> dlsw bridge-group 1
> !
> interface Loopback0
> ip address 150.150.2.1 255.255.255.0
> !
> interface Serial0
> ip address 150.150.100.2 255.255.255.0
> !
> interface Ethernet0
> ip address 150.150.30.1 255.255.255.0
> bridge-group 1
> !
> bridge 1 protocol dec
> !
>
> In this example, the station on the Ethernet segment is allowed to talk to
> the stations on the Token Ring segment. The DLSw+ router will take care of
> the conversion from Ethernet format into Token Ring format. The
> bridge-group number is used to tie the Ethernet segment to the DLSw+
> process just like the source bridge statement ties the Token Ring segment
> to the DLSw+ through the virtual ring-group.
>
>
> At 5/3/00, you wrote:
> >http://cisco.com/warp/public/701/45.html
> >
> >I for one did not know that the config could work without te
source-bridge
> >command on the ethernet side...
> >Plug in a netbios enabled pc into the ethernet side, and see if the name
> >will show up on the other dlsw peers
> >
> >Nnanna
> >
> >----- Original Message -----
> >From: "Kinton Connelly" <kinton@oldmedia.com>
> >To: <ccielab@groupstudy.com>
> >Sent: Wednesday, May 03, 2000 3:51 PM
> >Subject: quick DLSW+ question
> >
> >
> > > Ok, so I'm going back through some of the CCIE Boot Camp labs and on
lab
> >3,
> > > it wants me to establish a DLSW+ connection between R2's ethernet0 and
> >R3's
> > > tokenring0. No problem. Here's how I'd do it:
> > >
> > > R2
> > > --
> > > dlsw local-peer peer-id 137.20.100.2
> > > dlsw remote-peer 0 tcp 137.20.3.33
> > > dlsw bridge-group 1
> > > !
> > > interface Ethernet0
> > > ip address 137.20.20.1 255.255.255.0
> > > bridge-group 1
> > >
> > > R3
> > > --
> > > source-bridge ring-group 10
> > > dlsw local-peer peer-id 137.20.3.33
> > > dlsw remote-peer 0 tcp 137.20.100.2
> > > dlsw bridge-group 1
> > > !
> > > interface TokenRing0
> > > ip address 137.20.30.1 255.255.255.0
> > > ring-speed 16
> > > source-bridge 1 1 10
> > > source-bridge spanning
> > >
> > > This config seems to work just fine - the circuits get all set up and
seem
> > > to be happy. But then I reviewed the solution configs and they added
this
> > > one line to R2 (right above the first dlsw entries):
> > >
> > > source-bridge ring-group 10
> > >
> > > Can someone please give me a sanity check on this? I didn't think you
> > > needed a "source-bridge ring-group" command for DLSW+ if you were
using
> > > ethernet interfaces - I thought all you needed was the "dlsw
bridge-group
> > > x" command.
> > >
> > > I just read through the CCO docs on this and couldn't find a straight
> > > answer - one of their examples uses the "source-bridge ring-group x"
> > > command on an ethernet-only router, but that's in the context of
SR/TLB.
> > >
> > > Ok...wait a minute...I just did a little more searching. In the
"Designing
> > > DLSw+ Internetworks" guide:
> > >
> > > <http://www.cisco.com/univercd/cc/td/doc/cisintwk/idg4/nd2007.htm>
> > >
> > > there is a similar example - and they don't use the "source-bridge
> > > ring-group x" command. So now I'm even more confused. Any takers?
> > >
> > > Thanks,
> > >
> > > Kinton
> > >
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