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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: eBGP, iBGP, injecting networks
He might try: http://www.cisco.com/en/US/tech/tk365/tk80/technologies_configuration_example09186a0080093f2c.shtml This one shows how to setup HSRP on the inside for the automatic failover that he's looking for. Curtis On Fri, 20 Feb 2004, Ing. Hans L. Reyes wrote: > > > Hi > > Your problem may be is similar when one ISP buy to another ISP, sometimes > is easy to modify the IGP like in this case (OSPF) because it is something > inside of your company and you have the control over all the devices but > you still have the problem outside of the company; client, others ISP, etc > > Check the feature of BGP "Local-AS" for routers Cisco if yours routers > aren't Cisco, check for someone similar with your vendor. May be you need > to do something else. > > This is the url where explain how it works. > > http://www.cisco.com/en/US/tech/tk365/tk80/technologies_configuration_example09186a00800949cd.shtml > > I hope it help you > -Hans > > On Fri, 20 Feb 2004 [email protected] wrote: > > > > > greetings list, > > > > hoping someone can hook me up on the right way to do this. > > > > --- > > > > we have two ASN's we control. > > > > we have two border/edge routers (1 in each ASN) that talks to a > > different backbone provider. > > > > the two border routers peer with eachother over eBGP and also are in > > the same OSPF process. (we are working to merge them into the same > > BGP ASN) > > > > my question is this: > > > > how do we achieve router redundancy between these two routers? > > > > currently if we lose a transit link, the traffic will flow fine out > > the other pipe. > > > > but we don't have BGP network statements in router 2 that exist in > > router 1 and we don't have BGP network statements in router 1 that > > exist in router 2. > > > > so the routes injected into BGP from router 1 will get withdrawn right > > if router 1 dies? > > > > is it a problem to announce the same networks from two different eBGP > > peers to two different upstreams? > > > > ------ > > > > if you are still reading, thanks! > > > > to clearify some more- > > > > current setup: > > > > current setup: > > > > ASN 1 (we're not Genu!ty- just using for an example) > > > > :) > > > > ASN 1 injects all of its own space and announces this space to > > Above.net and ASN 2 > > > > ASN 2 injects all of its own space and announces this space to Savvis > > and ASN 1. > > > > so stuff out on the net looks like: > > > > 1 6461 etc etc > > > > and > > > > 1 2 6347 > > > > ------- > > > > 2 6347 etc etc > > > > and > > > > 2 1 6461 etc etc > > > > ------- > > > > so, you see we are prepending on of our AS's on the way out. > > > > the problem is tho, we only have 1 router in each respective Autonmous > > System injecting address space. if we lose that router, we lose > > announcing that ASN's space. > > > > is it totally going to cause probs to have routes originating from two > > different AS's? routing loops would be a real drag. > > > > what about having an iBGP router in AS 1 inject the same space as the > > border router in AS 1? this other router also peers with AS 2.... > > > > thanks a lot! > > jg > > > -- -- Curtis Maurand mailto:[email protected] http://www.maurand.com
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