From: Jason Graun (jgraun@xxxxxxxxxx)
Date: Tue Nov 27 2001 - 14:21:57 GMT-3
On the other routers that site on vlans 3 and 4 do you have to define
them as part of bridge 1?
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Waters, Kivas (UK72)
Sent: Friday, November 23, 2001 5:35 PM
To: 'Jonathan Chin Kah Fi'
Cc: ccielab@groupstudy.com
Subject: RE: Bridging
Cisco do not recommend placing L3 addresses for protocols that are to be
routed via a BVI on the interface configured with "bridge-group X". I
implimented a bridged scenarion recently and after some research learnt
that
Cisco do not recommend placing L3 addresses on bridged interfaces, in
general. The test following was lifted from this url ...
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/i
bm_c
/bcovervw.htm#xtocid164823
To route and bridge a given protocol in the same bridge group, you must
configure the network layer attributes of the protocol on the
bridge-group
virtual interface. No protocol attributes should be configured on the
bridged interfaces, and no bridging attributes can be configured on the
bridge-group virtual interface.
regards
Ki
---------------------------------------------------------
-----Original Message-----
From: Vega, Juan R, SOBUS [mailto:juanvega@SOLUTIONS.att.com]
Sent: 23 November 2001 17:09
To: 'Jonathan Chin Kah Fi'; Rivron Francois
Cc: DAN DORTON; ccielab@groupstudy.com
Subject: RE: Bridging
To me, it would be a waste of IP to assign an address to the
subinterface
fa0.3. Let the BVI interface have the address. This makes it alot
simpler.
-----Original Message-----
From: Jonathan Chin Kah Fi [mailto:kachin@cisco.com]
Sent: Friday, November 23, 2001 4:57 PM
To: Rivron Francois
Cc: DAN DORTON; ccielab@groupstudy.com
Subject: Re: Bridging
Sounds alright to me....but can interface fa0.3 be assigned an ip
address if
it
is
also in the bridge-group?
interface fa0.2
encap isl 2
interface fa0.3
ip address <network 1.a>
encap isl 3
bridge-group 1
interface fa0.4
encap isl 4
bridge-group 1
inter bvi 1
ip address <network 2>
bridge 1 protocol ieee
bridge 1 route ip
Rivron Francois wrote:
> One proposition:
>
> Assume that stations on vlan 3 & 4 have their ip @ in network 1
>
> interface fa0.2
> encap isl 2
> ip ad <network 2>
>
> interface fa0.3
> encap isl 3
> bridge-group 1
>
> interface fa0.4
> encap isl 4
> bridge-group 1
>
> interface bvi 1
> ip ad <network 1>
>
> bridge 1 route ip
> bridge 1 protocol ieee
>
> FRI
>
> > -----Message d'origine-----
> > De: Jonathan Chin Kah Fi [SMTP:kachin@cisco.com]
> > Date: vendredi 23 novembre 2001 17:10
> > @: DAN DORTON
> > Cc: ccielab@groupstudy.com
> > Objet: Re: Bridging
> >
> > I have a question here on bridging for the gurus out there...
> >
> > Suppose I have a router on a stick scenario whereby it is connected
to a
> > cat5k's trunk carrying
> > vlan 2,3 and 4. So, I will have to create three sub-interfaces on
the
> > router's fast ethernet interface
> > to receive each of the ISL colors. How would you configure IRB if
suppose
> > you want to bridge
> > between vlan 3 and 4 and then route between vlan 2 and the bridged
> > vlans???
> >
> > Any suggestions? One BVI or two?
> >
> >
> >
> > DAN DORTON wrote:
> >
> > > Do any of you bridging guru's ou there have a list of the finer
points
> > of bridging that they used for CCIE lab study?
> > >
> > > I am not looking for answers, just topics & issues to focus on.
> > >
> > > I just started working on bridging & I have built several
scenarios so
> > far of the basic configurations & such. ( SRB, RSRB, SRTLB, CRB,
IRB.)
> > >
> > > I know there are filtering techniques & timers too adjust also.
> > >
> > > I am getting closer to running out of time everyday & thought I
would
> > try to save a little here.
> > >
> > > Thanks in advance ,
> > >
> > > Dan
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