Of course, two backbones where you intended one is generally a sub-optimal occurrence.
At 03:33 PM 6/7/2002 -0400, Dusty Harper wrote: >The network doesn't totally hose. Basically you get a second backbone. >This leads to basically two different networks. In the example you >provided, The backbone is still "contiguous" > >An example or where this might occur would be > > > __ > Area | |----------- > ----------|__| C > B | > A | Area 0 > _| __ > | | | |Area 2 > |__|-----------|__|------ > D E > > >If the connectivity on link A went down, Area 0 then becomes divided, >creating 2 separate networks > 1) consists of subnet B, C, and possibly A > 2) consists of D, E and possibly A > > possibly A is determined by what broke the connectivity. > >OSPF still functions, it just changes its behavior to accommodate the >new topology. > > >-----Original Message----- >From: Carroll Kong [mailto:[EMAIL PROTECTED]] >Sent: Friday, June 07, 2002 7:18 AM >To: [EMAIL PROTECTED] >Subject: Re: OSPF area 0 [7:45995] > > >If I remember correctly, yes, Area 0 routers must always have a way to >connect to each other. It does not have to be a full mesh (if that is >what you mean by contiguous). Three routers in a mesh would be fine if >one link broke. > >Now, if an area 0 router loses all connectivity to the other Area 0s (in >your case, isolate one point of the triangle by losing TWO links), then >your network gets borked. You will need a virtual link (if at all >possible), or... well... your network is broken? :) > > > Hi group, > > > > > > > > Is there any condition that OSPF area 0 must be contiguous?. > > > > I remembered read this some where on CCO. Is this true?. For a > > situation, three ospf routers connected in a triangle shape, what if > > one of the link goes down?. > > > > Any one experienced on this situation, please show me some documents > > related to this?. > > > > > > > > Thanks in advance, > > > > J. > > > > > > > > --------------------------------- > > Do You Yahoo!? > > Sign-up for Video Highlights of 2002 FIFA World Cup Nondisclosure > > violations to [EMAIL PROTECTED] > > > >-Carroll Kong Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=46129&t=45995 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
