> > > > problem on unaffected route? > > > > > > > > Ask your customers. They do not care if someone else is having a problem. > > > > They care that they dont. > > > > > > Do you run a decent sized network? > > > > No, I have never touched a router in my life. > > Possibly.. > > > > Convergence time in the order of that taken by BGP is not acceptable, > > > things go crazy when traffic pours in and theres no routes to carry it. > > > > This is a great blanked statement. What is convergence time? > > The time from when traffic starts hitting down interfaces or null to when it > starts going again. Preferably without the rest of the network needing to know > about it and suffer meltdown.
How many seconds does it take your network to meltdown from traffic? > > > Other example, what about static dialup users, they dial up and wait a few > > > minutes whilst their route is installed throughout BGP?? > > > > That is why their route is *nailed* via BGP to the router that *always* > > provide connectivity to them. If they have to move, BGP injectors are your > > friends. Takes seconds. > > See previous comment about network size - theres no such thing as always in > dialup with multiple geographic PoPs. Route-injection is your friend. bgp-push and avi-bgp are your friends. > > > > > > With link-state, one interface flap can mean doing SPF on every route. > > > > > > If "every route" is only a couple hundred, rather than 100K, you fare > > > > > > > > > > As you say disable synchronization and try and control the physical reach of > > > > > your igp by some mechanism.. areas, summaries, ASes etc > > > > > > > > Which is exactly what you are doing when you inject nailed routes into bgp. > > > > > > No its not? I'm suggesting some level of order can help control the number of > > > routers required to reconverge a network, I dont see the comparison with > > > inserting routes in BGP which is how the routes get in not how they converge. > > > > If you dont have a network wide meltdown due to IGP failure you wont need to > > wait for entire network to come up. It is timing of discrete events. Isn't > > math grand. > > Reconvergence after a single link failing is hardly failure/meltdown? How many SECONDS does it take to for your network to meltdown from normal traffic level? Alex --