Hi Adrian, Answers to your questions.
1. No, ISP is not running MPLS within this cloud. 2. No, it's just one ISP. 3. We have 2 sites with high speed dark fibre connectivity between them and this is the best path. There are multiple redundant paths between the core switches at each site. The ISP has its routers at each location that connect to the core switch. 4. No we won't be running BGP within the sites, only EIGRP. At each site are subnets, no 2 subnets span the other site so they are exclusive to that site only. The route map is configured to look at the access list for site A (HQ). This access list contains a list of networks within Site A. For routes that do not match the subnets in that access list we set tag to 300. This route map is then applied and the ISPs router sees only specific routes that have a tag of 300 on them and other routes with no tags. The same thing is done on Site B where the route map looks at an acl which contains networks only at Site B and does nothing. But the 2nd statement sets tag to 200, meaning all routes other than those specified in the acl are to be tagged as 200. What we want is for the ISP to match tag 300 and then make it more expensive within their BGP cloud. The ISP redistributes EIGRP to BGP. Hence the question, when redistributing from one protocol to another, are the tags maintained or lost? The purpose of this exercies is that if remote sites want to access a subnet at Site B they are correctly routed to the ISPs router at Site B and do not go via their router at Site A and then via the dark fibre. This is what we would like to achieve. Regards, Vikas. On Wed, Aug 19, 2009 at 10:25 AM, Adrian Brayton <[email protected]> wrote: > Thats a loaded question without enough detail... > > 1. Is the SP running MPLS where your EIGRP route's are added to a VRF? > > 2. Do you have multiple ISPs that you connect to? > > 3. Why do you want to make those routes more expensive in there cloud? > > 4. Are you running or going to be running BGP? > > Just a few more details would sure make answering this question a little > easier!! > > > > On Aug 18, 2009, at 7:18 PM, Vikas Sharma wrote: > > Hi Everyone, >> >> I need some help regarding redistribution of tagged routes. Issue is as >> follows. >> >> I have a core switch on which is configured EIGRP. The ISP's router >> connects into the core switch also runs EIGRP. The ISP in turn runs BGP >> within their cloud. >> >> I have a distribute list on my core switch that sets a tag of 300 for >> routes going towards the ISP router. That is fine and the ISP's router can >> see them. >> >> The question I have is when they redistribute EIGRP into BGP are the tags >> maintained? I want them to apply a route-map to match tag 300 and then use >> the as-prepend command within the route-map to make those routes more >> expensive within their cloud. The route-map then gets applied in the >> outbound direction from within the router bgp (AS-Number). >> >> I would like to think there is no need to apply the route map in the EIGRP >> config on the ISP router. Rather, first they redistribute EIGRP into BGP and >> then apply this route-map in BGP. Please advice. >> >> Regards, >> >> -- >> Vikas Sharma >> Network Specialist >> Fujitsu Australia >> (M): 0421 052 117 >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> > > -- Vikas Sharma Network Specialist Fujitsu Australia (M): 0421 052 117
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
