From: Tony Olzak (aolzak@xxxxxxxxxxxxxxxxxxx)
Date: Wed Dec 06 2000 - 14:03:27 GMT-3
Think of it as assigning a bridge number to the translational bridging
itself.
The first number is your ring group. You;ve already assigned a bridge to the
ring group using the source-bridge command under a token interface. The
second number is your pseudo-ring for TL. You need a bridge number for the
ring-group to get to the pseudo-ring; this is the third number. The last is
the transparent bridge to the Ethernet interface.
Tony
----- Original Message -----
From: "Justin Menga" <Justin.Menga@computerland.co.nz>
To: "'Rick Burts'" <burts@mentortech.com>; "Justin Menga"
<Justin.Menga@computerland.co.nz>
Cc: <ccielab@groupstudy.com>
Sent: Wednesday, December 06, 2000 5:57 AM
Subject: RE: SR/TLB
> OK - so logically is it like this from my config below:
>
> Ring 10 ----- Bridge 2 ------ Ring 1000 -------- *Bridge 2 ------- Ring
2000
> (=TB 1)
>
> The *Bridge 2 is specified by third number in source-bridge 1000 2000 2
1??
> Based on your reply, doesn't this break the rule of identical bridge
numbers
> (probably, but this is a purely logical connection with no hosts on the
> intermediate ring so does it really matter).
>
>
> So I could also have the following with:
>
> source-bridge transparent 1000 2000 *4 1
> int to0
> source-bridge 10 **2 1000
>
> Ring 10 ----- **Bridge 2 ----- Ring 1000 ----- *Bridge 4 ----- Ring 2000
> (=TB1)
>
> Does this make logical sense??
>
> Regards,
>
> Justin Menga MCSE+I CCNP CCSE ASE
> WAN Specialist
> Computerland New Zealand
> PO Box 3631, Auckland
> DDI: (+64) 9 360 4864 Mobile: (+64) 25 349 599
> mailto: justin.menga@computerland.co.nz
>
>
> -----Original Message-----
> From: Rick Burts [mailto:burts@mentortech.com]
> Sent: Wednesday, 6 December 2000 2:32 a.m.
> To: Justin Menga
> Cc: 'ccielab@groupstudy.com'
> Subject: Re: SR/TLB
>
>
> see comments in line
>
> Rick Burts, CCSI CCIE 4615 burts@mentortech.com
> Mentor Technologies 240-568-6500 ext 6652
> 133 National Business Parkway 240-568-6515 fax
> Annapolis Junction, Md 20701
>
> Chesapeake Network Solutions has now become Mentor Technologies.
> Mentor Technologies is a certified Cisco Training Partner and also
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> We offer most of the Cisco training courses.
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>
> On Tue, 5 Dec 2000, Justin Menga wrote:
>
> > Hi,
> >
> > I have a few questions on SR/TLB
> >
> > sample config:
> >
> > source-bridge ring-group 1000
> > source-bridge transparent 1000 2000 2 1
> >
> > bridge 1 protocol ieee
> >
> > int to0
> > source-bridge 10 2 1000
> >
> > int e0
> > bridge-group 1
> >
> > In the above config, the problem I have understanding is the transparent
> > command, particularly the last two numbers. The third number is the
> "bridge
> > no of the bridge that leads to the transparent bridging domain". Does
> this
> > mean the bridge as specified in the source-bridge command under to0.
THe
>
> It does not necessarily mean the bridge specified in the source bridge
> command. It is defining a bridge number of a bridge that links the
> logical source route domain with the logical transparent domain. It
> must be a valid source route bridge number.
>
> > fourth number is the number of the TB-Group - I understand this.
> >
> > I have seen configs that use different bridge numbers than those under
the
> > interfaces - will this still work?
>
> different bridge numbers than those under the interface will work as long
> as it is a valid source route bridge number.
> >
> > Last question: In a SRB network (without DLSW), do the bridge numbers
> have
> > to be unique?? (I know the ring numbers need to be)
>
> in general the bridge numbers do not have to be unique. There is exactly
> one circumstance where the bridge numbers must be unique and that is the
> situation where two rings are connected by two bridges, in which case the
> two bridge numbers must be unique.
>
> >
> > Regards - 14 days in SYDNEY.....
> >
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