I can think of two reason why it wouldn't work.
1. Because you're using bridging on the frame relay links, it must adhere
to the spanning tree rules. This means that you cannot send traffic out
the same interface you receive it on. In this configuration it would mean
that information received on a DLCI it would not be able to be forwarded
out any of the other DLCIs because they are on the same physical interface
2. You're using "frame map bridge" statements which disables inverse arp.
You have to add static "frame map ip" statements for all the layer 3
addresses. This wouldn't explain why it works when the DLCIs are on
different layer 3 networks though.
Rob
Brian @groupstudy.com on 08/21/2001 02:10:42 PM
Please respond to Brian
Sent by: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
cc:
Subject: RE: CHALLENGE PROBLEM (was Re: For FR Grus.... [7:16635])
[7:16711]
No one has gotten this problem yet. Remeber, making it so the clients are
on differnt layer 3 networks works, but when they are on the same it
doesn't. What mechanics are involved in how the packet will be treated
different if on the same network vs. different networks.
I'll still leave the answer open, someone will get this.
Brian
On Tue, 21 Aug 2001, Wayne Wenthin wrote:
> To me this looks very similar to bridging with DSL. Since you cannot
> receive the ARP the router must proxy this.
>
> At 09:52 AM 8/21/2001, McCallum, Robert wrote:
> >you can correct me here if I am wrong but split horizon is only used in
> >distance vector protocols???? NO???
> >
> >The problem here without giving the answer is that a router is expected
to
> >pass a packet out of an interface which is on its own subnet !! Doesn't
> >compute! What is the routing protocol being used to route ip?? This is
> >where the answer will lye
> >
> >-----Original Message-----
> >From: Donald B Johnson jr [mailto:[EMAIL PROTECTED]]
> >Sent: 21 August 2001 17:06
> >To: [EMAIL PROTECTED]
> >Subject: Re: CHALLENGE PROBLEM (was Re: For FR Grus.... [7:16635])
> >[7:16681]
> >
> >
> >I don't think bridge will work on this network because of split horizon.
> >
> >
> >
> >
> >----- Original Message -----
> >From: "Brian"
> >To:
> >Sent: Tuesday, August 21, 2001 7:51 AM
> >Subject: CHALLENGE PROBLEM (was Re: For FR Grus.... [7:16635]) [7:16659]
> >
> >
> > > On Tue, 21 Aug 2001, Cisco Lover wrote:
> > >
> > > > Hi Guys..
> > > >
> > > > Come with some New Queston..
> > >
> > > hmm, ok, so your looking for some challenging questions? Ok, I will
post
> > > one, its got FR in it. First I'll post the problem, followed by the
> > > config:
> > >
> > > THE PROBLEM
> > > ===========
> > > Users on DLCI's 200, 224, 201, 225 cannot communicate to eachother.
They
> > > can talk just fine to the rest of the network, but no packets can
pass
> > > between them. Later discovery reveals that so long as they are on
> > > different layer 3 network addressing, communcation can occur, but if
they
> > > are on the same network, such as 192.168.3.0, then they cannot
> communicate
> > >
> > > What is the problem? I will reply to let everyone know who got the
> > > correct answer.
> > >
> > > Below is the configuration:
> > >
> > > !
> > > version 11.3
> > > !
> > > interface Ethernet2/0
> > > ip address 192.168.1.242 255.255.255.0
> > > !
> > > interface Serial4/0
> > > no ip address
> > > encapsulation frame-relay IETF
> > > keepalive 15
> > > frame-relay map bridge 200 broadcast IETF
> > > frame-relay map bridge 224 broadcast IETF
> > > frame-relay map bridge 201 broadcast IETF
> > > frame-relay map bridge 225 broadcast IETF
> > > frame-relay lmi-type ansi
> > > bridge-group 1
> > > !
> > > interface BVI1
> > > ip address 192.168.3.242 255.255.255.0 secondary
> > > ip address 192.168.2.242 255.255.255.0
> > >
> > > !
> > > router igrp 1
> > > network 192.1.0.0
> > > network 192.2.0.0
> > > network 193.3.0.0
> > > !
> > > ip classless
> > > !
> > > bridge irb
> > > bridge 1 protocol ieee
> > > bridge 1 route ip
> > > !
> > >
> > >
> > > >
> > > > For eg,
> > > > our FR switch is setup for Full mesh,But out network is setup as
Hub
&
> > > Spoke
> > > > FAQ, list archives, and subscription info:
> > > http://www.groupstudy.com/list/cisco.html
> > > > Report misconduct and Nondisclosure violations to
[EMAIL PROTECTED]
> > > >
> > >
> > >
> > > -----------------------------------------------
> > > I'm buying / selling used CISCO gear!!
> > > email me for a quote
> > >
> > > Brian Feeny, CCIE #8036 Scarlett Parria
> > > [EMAIL PROTECTED] [EMAIL PROTECTED]
> > > 318-213-4709 318-213-4701
> > >
> > > Netjam, LLC http://www.netjam.net
> > > 333 Texas St. VISA/MC/AMEX/COD
> > > Suite 1401 30 day warranty
> > > Shreveport, LA 71101 Cisco Channel Partner
> > > toll free: 866-2NETJAM
> > > phone: 318-212-0245
> > > fax: 318-212-0246
I'm buying / selling used CISCO gear!!
email me for a quote
Brian Feeny, CCIE #8036 Scarlett Parria
[EMAIL PROTECTED] [EMAIL PROTECTED]
318-213-4709 318-213-4701
Netjam, LLC http://www.netjam.net
333 Texas St. VISA/MC/AMEX/COD
Suite 1401 30 day warranty
Shreveport, LA 71101 Cisco Channel Partner
toll free: 866-2NETJAM
phone: 318-212-0245
fax: 318-212-0246
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