From: Greg Parrish (gparrish@xxxxxxxxx)
Date: Thu Apr 04 2002 - 09:56:02 GMT-3
Kurt from what I know you are exactly right, locally significant. Wouldn't the
router and the BRF then be distinct bridges on the same ring? The router is
just used to get out of the network where the switch is used to switch between
rings all in the same subnet.
Greg
Kurt Claes wrote:
> Hi,
>
> I disagree with you Parry,
>
> The bridge number in th source bridge interface command does not have
> anything to do with the TrBRF.
> When you do SRB (or DLSw), you always need a ring---bridge---ring
> combination. If you configure a virtual ring on your router of 2000
> (decimal), and have a token ring interface connected to ring number 15
> (decimal), your source bridge command can be "15 1 2000" redgardless of the
> TrBRF you configured in the Token Ring 3920 switch. The bridge number 1 is
> only locally significant to connect the 2 rings together...
>
> correct me if I'm wrong
>
> Kurt
>
> -----Original Message-----
> From: Chua, Parry
> To: Nicolai Gersbo Solling; ccielab@groupstudy.com
> Sent: 4/04/02 11:24
> Subject: RE: 3900 Question...
>
> TrBRF numer is 4 bits lenght (hex 0x01 to 0x0F), Same as bridge number
> when configure source-brdige interface command.
>
> in Cat39xx, if you create one instance of TrBFR and you create several
> TrCRF's
> which all attach to the same TrBFR, it is in one vlan(SRT or SRB).
>
> If you create two or more TrBRF's and TrCRF's, You have two or more
> vlan's.
> TrCRF that attach to the same TrBFR are belong to the same vlan..
>
> Parry Chua
>
> -----Original Message-----
> From: Nicolai Gersbo Solling [mailto:nicolai@cisco.com]
> Sent: Thursday, April 04, 2002 4:44 PM
> To: ccielab@groupstudy.com
> Subject: 3900 Question...
>
> Hi there...
>
> I do not have access to a 39XX in my labsetup, so I only have a
> simulator
> for prepping on this wicked device...
>
> Therefore coud someone please verify this for me...
>
> If I have a TRBRF set to for instance 0x10 and one port in TRCRF 0x11
> and
> one in 0x12...
> Then the two routers config would look like this...
>
> r1
> source-bridge ring-group 1
> int to0
> ip address 192.168.17.1 255.255.255.0
> source-bridge 17 16 1
>
> r2
> source-bridge ring-group 1
> int to0
> ip address 192.168.18.1 255.255.255.0
> source-bridge 18 16 1
>
> Which subnet will the 3920 then be part of? Will it "auto-sence" which
> subnet it is being assigned an IP address from or how will it work?
> And in fact when you assign the IP address is that then being assigned
> to
> the TRBRF or the TRCRF? And if it is being assigned to the TRCRF, which
> one
> is it being assigned to?
>
> Nicolai
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