I think access list applied with route-map can help in the filtering of the receive route , its not appropriate to receive all the route from internet , because when you start bgp process , it kicks sub process , in which one process does the route scan of the bgp table and if there are too many route in the bgp table it will kick the processor cpu to go high ,AS path filtering can be tricky here as both isp can reach the AS from which u want to receive the route , but bgp has many options , its a slow but very efficient routing protocol
On Friday, April 12, 2013, Robert Beck <[email protected]> wrote: > Hi all, > > I have BGP questions. But first the set up. > > ISP1 connectected to R1 > ISP2 connected to R1 > > ISP2 connected to R2 > > IBGP between R1 and R2 redistributing 0.0.0.0 from EBGP into IGP that is > received from primary ISP. Which from what I've found on google searches > that seems to be the norm. > > Both routers are receiving the full BGP table. Several Networks advertised > out both ISPs. > > Now the questions.. > 1. Is it a good idea to receive the full BGP table other than the cool > factor? Also, is there a way to prevent from becoming a transit hop while > receiving the full BGP table? When you receive the full BGP table, isn't > becoming a transit area automatic? > > 2. Is there a good way to load balance outbound traffic to the internet in > this set up? 60/40? If the route goes out ISP1 and network A is advertised > to ISP2 will asymetric routing work in this case? I think not. I would > assume the best practice method would be to have the path go out which ever > Network is advertised to which ISP. For example, if Network B is advertised > out ISP2 then have them route that way instead of ISP1. > > thanks for any info. > _______________________________________________ > 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 > _______________________________________________ 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
