yes agreed it could give you hard time in case of MPLS VPN with multi dynamic protocols scenario because when traffic comes to P routers it becomes label!, tag could give you hard time! but where routing is continuous PBR is best tool to control the routing the way you need it. i use to say protocols are sports vehicles with turbo engines but you need the best driver (PBR) to control them.
Regards Sheraz Date: Sun, 10 Feb 2013 20:42:48 +1100 Subject: Re: [OSL | CCIE_RS] Route redistribution with route tags From: [email protected] To: [email protected] CC: [email protected]; [email protected] Sheraz, It totally depends what the requirements of your network are. There are occassions where one has to do to mutual redistribution on two different exit points in a small site, which in turn could connect to a huge L3 MPLS VPN. Thats where tag come in handy. But yeah be wary of the IOS one uses, I have faced an issue where route-map does work really with a few matches, which would work on other IOS. Regards, Samir. On Sun, Feb 10, 2013 at 5:04 PM, Sheraz Sheraz <[email protected]> wrote: Dear Samir/Akash, I have redistributed ospf into eigrp in routing domain to get my real time enterprise requirement done so you need redistribution besides you run only one protocol throughout your domain & where you need communication to be extended keep it going just use redistribution! keep one thing in mind always use clock wise redistribution don't use both anti-clock and clock wise redistribution it will definitely put your network in loops! Akash, people need PBR to control the routing or to filter the routes I'm using it as well because want to redistribute only specific subnets not all the static or connected routes of my devices! you can use tag as well to get this goal done, routing tag is great option to filter some specific routes like if 9 routes are coming from ospf neighbor and you want to deny one out of 9 routes then you need route tagging. you need Route-map with ACL & tag applied for specific ACL (route) Example: R1 access-list 101 permit ip 192.168.1.0 0.0.0.0 any access-list 102 permit ip 192.168.0.0 0.0.254.0 any route-map tag permit 10 match ip address 101 set tag 200 route-map tag permit 20 match ip address 102 route-map tag permit 30 router ospf 1 redistribute static subnet route-map tag f0/0 clear ip ospf process on R2 R2 route-map tag deny 10 match tag 200 route-map tag permit 20 Regards Sheraz > Date: Sun, 10 Feb 2013 14:14:03 +1100 > From: [email protected] > To: [email protected] > CC: [email protected] > Subject: Re: [OSL | CCIE_RS] Route redistribution with route tags > > Akash, > > Route distribution theoritically is easy but when it comes to prod > networks, depending on the complexity can turn out to be a disaster and > frankly can end up in routing loops. It can be taken as control points at > various part of your networks. Best to check out default behaviour of > various routing protocols with tags in the doccd. That will help you, > really. > > If you stuck with some scenario, mention it here and we can discuss it > futher. > > Regards, > Samir. > > On Sat, Feb 9, 2013 at 2:45 PM, Akash <[email protected]> wrote: > > > Hi, > > > > Does anyone have a great explanation on route redistribution with route > > tagging, I am having a tough time breaking it down, I was able to get past > > first few steps in vol 1 lab 15 but after that it went all over my head. > > > > Does Marko have a article on route redistribution with route tags, I found > > one on redistributing connected routes, his explanation is so vivid and has > > helped me a lot in the past. > > > > Thanks, > > Akash > > _______________________________________________ > > For more information regarding industry leading CCIE Lab training, please > > visit www.ipexpert.com > > > > Are you a CCNP or CCIE and looking for a job? Check out > > www.PlatinumPlacement.com <http://www.platinumplacement.com/> > > > > http://onlinestudylist.com/mailman/listinfo/ccie_rs > > > > > > -- > Samir Idris > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs -- Samir Idris _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
