From: DAN DORTON (DHSTS68@xxxxxxxxxxxxxxx)
Date: Thu Apr 04 2002 - 11:05:51 GMT-3
You can if they are the same trbrf & the same subnet, but different ring number
s (trcrfs) you can either.
A: Run the trcrf in SRT
B: Run the trcrf in SRB mode (default) & specify multiring all on the router ri
ngs, so they can build RIF fields & talk to each other.
Dan
>>> "Lupi, Guy" <Guy.Lupi@eurekaggn.com> 04/03/02 08:08PM >>>
I have no idea, although what you are saying sounds right. I wonder if it
would work either way, although now that you mention it, it does make a lot
more sense to use the following. But like I said, I don't really know. I
have some virtual rack time coming up and I want to be ready to set this
stuff up, I have used a 3920 before, but only the 3920, no routers connected
to it.
r1 (trbrf 15 trcrf 15)
int to0
ip addr 6.6.6.6 255.255.255.0>
multiring ip
source-bridge 15 21 16
source-bridge spanning
r2 (trbrf 15 trcrf 16)
int to0
ip addr 6.6.6.7 255.255.255.0
multiring ip
source-bridge 16 21 15
source-bridge spanning
-----Original Message-----
From: Geoffrey KIM
To: Lupi, Guy; 'Chua, Parry '
Cc: ccielab@groupstudy.com
Sent: 4/3/2002 9:05 PM
Subject: RE: 3920 operation questions
Guy,
What I don't understand is why you need the 'source bridge ring 12'?
Can't you directly SRB between the ring 15 and ring 16 via the BRF15
(i.e., bridge 21 in decimal)?
Thanks,
Geoffrey
> -----Original Message-----
> From: Lupi, Guy [mailto:Guy.Lupi@eurekaggn.com]
> Sent: Thursday, April 04, 2002 10:15 AM
> To: 'Geoffrey KIM '; 'Chua, Parry '
> Cc: 'ccielab@groupstudy.com '
> Subject: RE: 3920 operation questions
>
>
> I was told today that the bridge numbers are in hex on the
> 3920, so you
> would have to convert them. I believe the following is the proper
> configuration, I am sure someone will correct me if I am wrong:
>
> r1 (trbrf 15 trcrf 15)
> source bridge ring 12
> !
> int to0
> ip addr 6.6.6.6 255.255.255.0
> multiring ip
> source-bridge 15 21 12
> source-bridge spanning
>
> r2 (trbrf 15 trcrf 16)
> source-bridge ring 12
> !
> int to0
> ip addr 6.6.6.7 255.255.255.0
> multiring ip
> source-bridge 16 21 12
> source-bridge spanning
>
>
> -----Original Message-----
> From: Geoffrey KIM
> To: Chua, Parry; Lupi, Guy
> Cc: ccielab@groupstudy.com
> Sent: 4/3/2002 8:09 PM
> Subject: RE: 3920 operation questions
>
> Parry,
>
> What's the correct configuration for the second case then? Is it:
>
> R1 - CRF15 - BRF15
> ------------------
> int to0
> source-bridge 15 15 16
>
> R2 - CRF16 - BRF15
> ------------------
> int to0
> source-bridge 16 15 15
>
> ?
>
> Thanks in advance,
> Geoffrey
>
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On
> > Behalf Of Chua, Parry
> > Sent: Thursday, April 04, 2002 9:47 AM
> > To: Lupi, Guy; ccielab@groupstudy.com
> > Subject: RE: 3920 operation questions
> >
> >
> > Hi
> >
> > point:
> > 1. is OK
> > 2. Is incorrect, it is like a two ring attach to a bridge, it
> > is in the same subnet.
> > but you need to configure multiring at interface to work
> > for SRB as far as IP and IPX
> > is concern.
> > 3. Is OK.
> >
> > Parry Chua
> >
> > -----Original Message-----
> > From: Lupi, Guy [mailto:Guy.Lupi@eurekaggn.com]
> > Sent: Wednesday, April 03, 2002 11:36 PM
> > To: 'ccielab@groupstudy.com'
> > Subject: 3920 operation questions
> >
> >
> > I have a few scenarios that I want to put out there to see if my
> > understanding is correct:
> >
> > 1. If you have 2 routers, each with a token ring interface
> > to the 3920, and
> > they are placed in the same trbrf trcrf, then this is just
> > like having an
> > MAU, the routers can exchange routing information and will be
> > on the same IP
> > subnet. This is the default configuration.
> >
> > 2. If you have 2 routers, each with a token ring interface
> > to the 3920, one
> > is placed in trbrf15 trcrf15, and one is placed in trbrf15
> > trcrf16, then the
> > routers will be on different ip subnets, but can do SRB. The srb
> > configurations would be as follows:
> >
> > r1
> > source-bridge ring-group 12
> > int to0
> > source-bridge 15 15 12
> >
> > r2
> > source-bridge ring-group 12
> > int to0
> > source-bridge 16 15 12
> >
> > 3. If you have 2 routers, each with a token ring interface
> > to the 3920, one
> > is placed in trbrf15 trcrf15, and one is placed in trbrf16
> > trcrf16. The
> > routers cannot do srb, this would be just like setting up 2
> vlans on a
> > Catalyst switch, intervlan communication is not possible.
> >
> > I appreciate any comments on this, I can set up the 3920 just
> > fine, but I am
> > trying to understand the effect that each setup has on srb
> and regular
> > traffic on the token ring segments that are attached.
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