Sounds like Spanning tree is screwing it up. Since this is a multipoint interface. It think spanning tree will consider it as one port. Any packet that comes in the router and is destined for the same subnet doesn't hit the BVI and is bridged. 1st rule of bridge forwarding : If the destination MAC address is unknown, forward out all ports except the ingress port. Since all the packets come in the same port as far a spanning tree is concerned, unknown or ANY packets for that matter, will not be set out the same port. Packets on different subnets hit the BVI and are routed and so will bypass the bridging rule. A bridge will NEVER forward a frame out the same port in came it. Solution: Set up P to P subinterfaces. These should be treated by bridge as different ports and frames will get forwarded. IGRP and split horizon have nothing to do with it. At least I think this is the problem :) Tony M #6172 ----- Original Message ----- From: "suaveguru" To: Sent: Tuesday, August 21, 2001 7:55 PM Subject: RE: CHALLENGE PROBLEM (was Re: For FR Grus.... [7:16635]) [7:16755] > is it something to do with using classless rather than > classful routing protocols? > > > regards, > suaveguru > --- Patrick Ramsey > wrote: > > How about get rid of igrp and configure ospf in nbma > > mode? :) > > > > -Patrick > > > > >>> "Brian" 08/21/01 02:10PM >>> > > 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 > [EMAIL PROTECTED] > > > __________________________________________________ > Do You Yahoo!? > Make international calls for as low as $.04/minute with Yahoo! Messenger > http://phonecard.yahoo.com/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=16768&t=16768 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
