""The Long and Winding Road"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > ""Debbie Westall"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Just a thought, but how about when.... > > > > redistributing the routes to the other protocol using a route-map at the > > end and tagging the routes that came from ospf. Add another route-map > > statement that any route that has been tagged deny it. > > > > Example: > > > > router ospf 100 > > redistribute rip metric 130 subnets route-map RIP2OSPF > > > > route-map RIP2OSPF permit 10 > > set tag 66 > > route-map RIP2OSPF permit 20 > > > > router rip > > redistribute ospf 100 metric 3 route-map OSPF2RIP > > route-map OSPF2RIP deny 10 > > match tag 66 > > route-map OSPF2RIP permit 20 > > > > I just went through the ACP class and this was their solution to a > > similiar situation. > > > oh, sure, and this is one way of doing things. > > the CCIE prep materials generally try to force you to master several > alternatives. Cisco ASET, where I got this particular exercise, > unfortunately has but a single answer, and their answer, as determined by > their grading scripts, is distribute-lists. This gets back to my posted > concern about the future of CCIE Lab testing, where everything is done by > script, and where there is only one answer, whether or not there are > alternatives. > > route tagging is indeed an excellent way to control things, and should be > part of any CCIE Lab participant's toolbox. >
The problem with this method is, of course, what if the best path to reach a route really is to go through the other IGP domain? For example, what if there is a split in your OSPF network, and for one particular OSPF router to reach another OSPF router, the best (heck, the only) path is to go through a RIP domain? All this filtering based on access-list or route-tag or whatever merely serves to break the redundancy that was a big reason for your using a routing protocol in the first place. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63213&t=63144 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
